Google Java Technology

Developing on Amazon Kindle

2012-01-19T10:26:00.002-06:00

To develop Android app on Kindle you have to set up your Mac's IDE environment first:

Install Android 2.3.4 tools in your Eclipse
Edit ~/.android/adb_usb.ini

# ANDROID 3RD PARTY USB VENDOR ID LIST -- DO NOT EDIT.
# USE 'android update adb' TO GENERATE.
# 1 USB VENDOR ID PER LINE.
0x1949
0x000

Restart the ADB

uki:platform-tools uki$ adb kill-server
-bash: adb: command not found
uki:platform-tools uki$ ./adb kill-server
uki:platform-tools uki$ ./adb start-server
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
uki:platform-tools uki$ ./adb devices
List of devices attached
75E8002600000001 device

If Amazon Fire is in USB transfer mode, just quit it

At this point you should be able to start using Eclipse to develop your apps.

When trying to install MY Mapping app I am getting error:

[2012-01-19 10:27:31 - CouponCabin] Uploading XYZ.apk onto device '75E8002600000001'

[2012-01-19 10:27:31 - CouponCabin] Installing XYZ.apk...

[2012-01-19 10:27:32 - CouponCabin] Installation error: INSTALL_FAILED_MISSING_SHARED_LIBRARY

[2012-01-19 10:27:32 - CouponCabin] Please check logcat output for more details.

[2012-01-19 10:27:32 - CouponCabin] Launch canceled!

01-19 10:27:32.394: E/PackageManager(1399): Package com.XYZ requires unavailable shared library com.google.android.maps; failing!

Yes, Amazon, you are failing indeed. Google Maps are not installed and you need to root your device to get them on:

http://www.pcworld.com/article/244474/how_to_install_the_android_market_on_your_kindle_fire.html

Kindle may be selling well, but it is far from a target platform.

Android: OAUTH

2011-12-20T16:59:00.002-06:00

Pretty cool article:
http://nilvec.com/implementing-client-side-oauth-on-android/

S Pen SDK 1.5

2011-12-19T15:15:00.002-06:00

This sounds interesting, I will have to check it out later.

We are happy to announce the release of the S Pen SDK 1.5, providing a higher level of flexibility, precision and control to your GALAXY Note applications.

New features included in version 1.5 of the SDK are:

● Zoom

New and improved Zoom in the S Pen SDK 1.5, facilitates increased precision in your app. With 50x magnification, a whole new level of detail is available, providing unparalleled control over your work.

● Panning

Also added to this update is Panning, allowing a user to change the X, Y coordinate values of the "CanvasView"

● Add Background

S Pen SDK 1.5 now offers fully customisable letter/note background images based on "CanvasView". Customise the background of your letter/notes to express your unique style.

● PenSettinginfo Class

Directly select the Pen and Eraser to give your users a higher level of flexibility and control.

http://innovator.samsungmobile.com/down/cnts/toolSDK.detail.view.do?platformId=1&cntsId=10210

Eclipse: installing SVN Subclipse plugin

2011-12-05T10:34:00.001-06:00

1) Install Eclipse

2) Help > Install New Software

3) Add new URL http://subclipse.tigris.org/update_1.6.x

4) Name the plug-in "SVN Subclipse 1.6 plugin"

5) Proceed with default installation steps

Installing Eclipse (Indigo) for Android Development

2011-12-05T10:22:00.001-06:00

Go to Website and download "Eclipse IDE for Java EE Developers".
If you are working on the modern Mac with i7 CPU then download 64 bit version, the fact that is very little advertised.
I download a little bigger Java EE version, because I like to have the Web tools for XML and HTML.

http://www.eclipse.org/downloads/

Mac OS Lion - colorful icons sidebar with SIMBL plugin

2011-12-03T13:49:00.001-06:00

Are you missing COLOR ICONS in your new Mac OS "Lion"?

Here is an easy tutorial:

1. Download ZIP file http://bit.ly/ColorfulSidebar and expand it.

2. Install SIMBL from the expanded folder.

3. Move the ColorfulSidebar.bundle into the following SIMBL plugin folder:

$ cd /Library/Application\ Support/SIMBL/Plugins

uki:Plugins uki$ ls

ColorfulSidebar.bundle

4. Restart the Finder through the Terminal:

$ killall Finder 

This is an edited post from original article by Natalia on CyberWalkAbout.com

Installing Android SDK

2011-11-29T17:09:00.001-06:00

1. Open website:
http://developer.android.com/sdk/index.html

2. Download:
Mac OS X (intel) android-sdk_r15-macosx.zip

3. Install in directory that is easy to find later:
/Applications/Android/android-sdk-macosx

4. Configure Eclipse to see that directory. If you are using Eclipse we assume you you have a plugin installed.

Eclipse > Preferences > Android

Install Android Development Tools (ADT) Eclipse plugin

2011-11-26T14:03:00.001-06:00

Android Development Tools (ADT) Eclipse plugin

install: Help > Install New Software...
URL: https://dl-ssl.google.com/android/eclipse/
name: Android Development Tools (ADT) plugin

2) Select all packages to install and click NEXT..

Install SVN plugin Subclipse for Eclipse Indigo

2011-11-26T13:49:00.001-06:00

I am re-installing Eclipse often enough that I decided to post this one more time:

Eclipse Help > Install New Software...
URL: http://subclipse.tigris.org/update_1.6.x

Removing Subclipse from Eclipse

2011-11-26T13:20:00.001-06:00

I got the following error while installing subclipse 1.6 after trying 1.8 (which failed to sync my projects):

Your original request has been modified.
"CollabNet Merge Client" will be ignored because a newer version is already installed.
"Subclipse (Required)" will be ignored because a newer version is already installed.
"Subclipse Integration for Mylyn 3.x (Optional)" will be ignored because it is already installed.
"Subversion Client Adapter (Required)" will be ignored because a newer version is already installed.
"Subversion JavaHL Native Library Adapter (Required)" will be ignored because a newer version is already installed.
"Subversion Revision Graph" will be ignored because a newer version is already installed.
Cannot complete the install because of a conflicting dependency.
Software being installed: SVNKit Client Adapter (Not required) 1.6.15 (org.tigris.subversion.clientadapter.svnkit.feature.feature.group 1.6.15)
Software currently installed: Subclipse (Required) 1.8.3 (org.tigris.subversion.subclipse.feature.group 1.8.3)
Only one of the following can be installed at once:
Subversion Client Adapter 1.8.0 (org.tigris.subversion.clientadapter 1.8.0)
Subversion Client Adapter 1.6.12 (org.tigris.subversion.clientadapter 1.6.12)
Cannot satisfy dependency:
From: SVNKit Client Adapter (Not required) 1.6.15 (org.tigris.subversion.clientadapter.svnkit.feature.feature.group 1.6.15)
To: org.tigris.subversion.clientadapter [1.6.12,1.7.0)
Cannot satisfy dependency:
From: Subclipse (Required) 1.8.3 (org.tigris.subversion.subclipse.feature.group 1.8.3)
To: org.tigris.subversion.clientadapter [1.8.0,1.9.0)

Here are the steps I took to uninstall subclipse:

Eclipse > Help > Install New Software > Available Software Sites ...

select subclipse and click "Remove"

Open Terminal; list and delete all subvesion jar files

$ cd /Applications/ide/eclipse/plugins [specific to your system]

$ ls | grep org.tigris.subversion | xargs rm

Even that did not allow full uninstallation and i decided to re-install Eclipse.

Mobile Apps: Customer Feedback

2011-11-16T14:27:00.001-06:00

There is several ways to get feedback from your customers.

The basic principle I have learned in Marines goes like this: if one of the Marines does not know how to do something, there is a good chance that some other platoon member does not know it either, hence the Drill Instructor screams at all them.

Bouncing your app against the real audience is expensive and time consuming, therefore observations should be keen and not lightly disregarded as “user is stupid, they did that wrong", developers like to say that way too often. Keep in mind the principle outlined in book “Don’t Make Me Think” .

Here are few of the customer feedback methods we use:

Give the app to a typical user (a child for kid’s game, etc.) who has never interacted with the app and observe the interaction without any explanation of how things are supposed to work. Take good notes and fix the issues immediately, once the user figur out the difficult part the chance is lost.
Provide eMail feedback inside the application. Many people would be surprised how few apps have support email that is easily accessed from mobile applications. Also, many app developers who have not used that method might be surprised how many emails they will get and you do want to be in touch with your users. Many of them will try to help with suggestions, some with thank you, and most will vent -- users that cannot find an easy way to vent to you personally, will do that in market review and you will loose your rating.
Read the reviews of your app. Try to fix problems and after releasing the fix make sure that several people write positive counter-review thanking you for fixing the problem
Have Facebook page for your app that is easy to access from mobile.
Have Twitter account for your app that is easy to access from mobile.
Have Google+ page for your app that is easy to access from mobile.

It is OK if people criticize you on your Facebook, Google+, or Twitter -- you can manage it, however negative reviews and ratings cause irreparable damage.

To read more download "Roadmap for Mobile Business" at http://bit.ly/CyberBook

Mac: Forcing Delete Trash

2011-11-15T16:08:00.001-06:00

I switched computer few time and copied a lot of files between. As result I got Trash full of files that I could not delete. The solution was to create a "Temp Trash" folder on my desktop, copy files from Trash to this new folder and Delete them again.

UN-Secure Delete of Trash

Sometimes you want to delete a lot of files files from Trash folder, but it takes forever using "Secure Empty Trash".

In this case is it easier and faster to click OPTION KEY button and "Empty Trash", the delete is not secure which means someone could do forensics on your Hard Drive and restore some of the files if they were in the sections not overwritten by newer data, but for most people who are not quite paranoid the speedy delete maybe a good option.

Changing Permission of the files to "Read and Write"

uki: ~ $ sudo chmod 666 /Users/uki/.Trash/*.*

Mac OS X 10.7.2 "Lion" - where is my Java?! #%!

2011-11-12T14:17:00.001-06:00

Apple decided that Java is not is not important enough to be installed on your new Mac , not nice!

I have heard the rummors that Steve did not love us, the Android crowd. I am sure it is not true, after all I am using Droid2 with keyboard and Galaxy Tab 7, both of which are not products that are offered by Apple. Denial? OK, I am reading his biography, he did hate us.

When you try to open apps like Eclipse you get an "almost" friendly pop-up:

Unfortunately for me, the installation of the Java did not happen, I tried several times.

I tried "java" from Terminal as that may fix the problem, but it did not.

What happened was I had a Software Update process already running and downloading new iTunes and whole bunch of other stuff over a very slow Public Library connection.

Uninstalling Android app from command line

2011-11-11T11:18:00.001-06:00

If you are switching between PROD and DEV versions of your app you will get this error:

[2011-11-26 14:27:22 - Local Guide Chicago] Re-installation failed due to different application signatures.
[2011-11-26 14:27:22 - Local Guide Chicago] You must perform a full uninstall of the application. WARNING: This will remove the application data!
[2011-11-26 14:27:22 - Local Guide Chicago] Please execute 'adb uninstall com.chicagoandroid.chicagolocal' in a shell.
[2011-11-26 14:27:22 - Local Guide Chicago] Launch canceled!

Make sure you have ONLY ONE device connected to USB, or the command will fail.
It would be also a good idea to put adb on your classpath, but it is not essential.

Open Terminal and perform these two commands (adjust to your situation):

$ cd /Applications/Android/android-sdk-macosx/platform-tools
$ ./adb uninstall com.chicagoandroid.chicagolocal
Success

one line version would be:

$ /Applications/Android/android-sdk-macosx/platform-tools/adb uninstall com.chicagoandroid.chicagolocal
Success

Since I do that often I made this automatic:

1. Open TextEdit
2. past the command:
/Applications/Android/android-sdk-macosx/platform-tools/adb uninstall com.chicagoandroid.chicagolocal
3. save with .bash extension
4. change permission to execute:
$ chmod 755 /Users/uki/Desktop/Uninstall\ Chicago\ Local\ Guide.bash
5. Make sure that Terminal knows to open .bash files

Android: creating 9-patch image

2011-10-23T20:02:00.001-05:00

This tutorial shows how to create a stretchable 9patch image.

Step 1) draw in Illustrator, or find button background image you really like:

http://www.google.com/images?q=button+aqua

Step 2) find draw9patch tool on your computer in android SDK tools folder

and start draw9patch form Terminal by executing:

$ ./draw9patch

or in my case:

uki: ~ $ /Applications/_Android/android-sdk-mac_x86/tools/draw9patch

Step 3) drag the image to the draw9patch tool and try to draw pixels on the edges of the image

left and top edges are for stretching areas
right and bottom are for (text) content area

actual 9patch file when saved, notice the file has name.9.png name and keep the 9 part:

final result

When you are working with images that have non-stretchable elements in them, you might define 2 stretching points. Also, it is a good practice to define a STYLE GUIDE if you need to create a set of 9patch images as in the case below:

left 16 (upper stretch)
left 26 (lower stretch)
right 9 (upper edge of text)
right 33 (lower edge of text)
bottom 8 (left margin)
bottom 16 (right margin, before arrow)
top 15 (any pixel inside text area)

Enlarge and study the image.

You can see in the image above that I count 16 pixels on the left so the stretch is always in the same point of the bevel. I try to avoid stretching such images with bevel and create them "to size" vertically.

I leave 8 pixels as the margin on the left, and 4 pixels from the drop-down arrow which cannot stretch.

I leave 9 pixels from the top and bottom because in other images of this set I have rounded corners.

You can visualize the final image after stretching on the right-hand side (image in the middle).

To read more download "Roadmap for Mobile Business" at http://bit.ly/CyberBook

Android Market Enigma

2011-10-23T14:40:00.002-05:00

I have deployed "SF Bay Area Local Guide" over 24 hours ago and I got few downloads, yet the app is not showing on either Web Android Market, nor mobile version for any device I own.

Any suggestions?

Android ADT 14 Declares War on My Code!

2011-10-22T20:20:00.000-05:00

The error comes up only when compiling the project, it started happening when I updated tools in Eclipse to ADT 14, but others had it in prior versions.

Unable to execute dex: Multiple dex files define

Conversion to Dalvik format failed with error 1
UNEXPECTED TOP-LEVEL EXCEPTION:
java.lang.IllegalArgumentException: already added: Lcom/cyberwalkabout/common/DistanceUtils;

We have been using multiple project libraries for months, but now including them causes a problem as some of them are referenced more than once.

I found suggestions, however they don't apply to my particular problem as the error is caused by my own library projects

remove external jars from build-path and re-add them as the local jar instead

remove all external jars and re-added them one at a time making sure they were the right ones

removed the .classpath file, bin and gen directories

clean the project in Eclipse, forcing the files to be regenerated

shuffled around the jar files in the build order

One of the suggestions was to start Eclipse with clean but that did not work either.

uki: /Applications/IDE/eclipse $ ./eclipse clean

Updates (Android ADT 14) in Eclipse Indigo that introduced these problems:

switch() to if-then

Among many, many things that went wrong today this one was was annoying because of many places I had to change, but at least quick to fix.

Android ADT 14 decided that it does not like to use R.id.reference as a parameter to switch statement and it had to me changed to if-then.

So all of the switch statements had to be converted to if-then. Thankfully there is a shortcut for that (command-1).

Eclipse Indigo (3.7.1) set up for Android Development

2011-10-06T23:23:00.000-05:00

1. Download "Eclipse IDE for Java EE Developers, 210 MB" from:

http://www.eclipse.org/downloads/

You should get this file:

eclipse-jee-indigo-SR1-macosx-cocoa.tar.gz

2. Unzip it and copy the "eclipse" folder to your Applications (or other convenient place)

3. Open eclipse folder and double-click on Eclipse.app

4. Set up the workspace to any folder where you want to keep your code

SETTING SVN - SUBCLIPSE

1. Eclipse Help > Install New Software...

2. URL: http://subclipse.tigris.org/update_1.6.x

3. Select all and follow the wizard until Subclipse is installed.

INSTALLING Android Development Toolkit ADT

1. The same way Eclipse Help > Install New Software...

2. URL: https://dl-ssl.google.com/android/eclipse/

3. name: Android Development Tools (ADT) plugin

4. select all and finish the wizard installation

5. restart IDE

Bash Shell: Working with large text files

2011-09-23T11:06:00.004-05:00

When working with multi-Gb text files I use these commands:

1. Get the first line which often contains column names and dump it into a small text file

uki $ head -n 1 source_file_name.txt > header_line.txt

2. Get first record after the headline and dump it into a small text file

uki $ head -n 2 source_file_name.txt | tail -1 > first_data_line.txt

3. Finally, when developing using large files, I take SAMPLE 1000 records (out of millions) to speed up the dev time, I use 1000 because that is default SELECT * number of records in MySQL, but you can use any other if you want, but I would not go too small as you many not catch memory leak errors. The random number 2500 in this example I would change occasionally to pull different sample. You do want to sample your data in different places.

uki $ head -n 2500 source_file_name.txt | tail -1000 > sample_1000_records.txt

Resulting files:

Eclipse: increase size of Console buffer size

2011-09-22T10:29:00.002-05:00

Then you are executing applications that have a lot System.out.print.. output, you might want to increate size of your Console to hold more text.

Eclipse > Preferences > type in Console in search > Run/Debug > Console

Increase buffer size from default 80,000 characters to MAX 999999.

Eclipse/Java: running out of memory

2011-09-16T14:14:00.002-05:00

When run Java processess that use a lot of loops you may get:

Exception in thread "main" java.lang.OutOfMemoryError: Java heap space

You can check Activity Monitor to see if you have java process that quickly builds up "Real Memory" from original 40 MB to 176 MB as it is the case here. Notice I still have 845 MB of Free memory, yet the process crashes around 177 MB.

Before you go and start increasing available memory please take a look at your code and refractor ANY creation of objects from inside loops, or at least heavy objects like database Statement used in the inserts:

Connection connection = MySqlHelpers.makeDbConnection(db, user, password);
Statement statement = connection.createStatement();

Just removing the Statement from the loop stabilized java process "Real Memory" footprint growth at 61 MB. Removing various Strings variables made much smaller difference.

I noticed that few System.out.println(...) does not really increase the memory footprint.

If you need to increase the memory, find the eclipse.ini and change maximum Xmx memory:

-startup
../../../plugins/org.eclipse.equinox.launcher_1.1.0.v20100507.jar
--launcher.library
../../../plugins/org.eclipse.equinox.launcher.cocoa.macosx_1.1.1.R36x_v20100810
-product
org.eclipse.epp.package.jee.product
--launcher.defaultAction
openFile
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
512m
--launcher.defaultAction
openFile
-vmargs
-Dosgi.requiredJavaVersion=1.5
-XstartOnFirstThread
-Dorg.eclipse.swt.internal.carbon.smallFonts
-XX:MaxPermSize=512m
-Xms40m
-Xmx1024m
-Xdock:icon=../Resources/Eclipse.icns
-XstartOnFirstThread
-Dorg.eclipse.swt.internal.carbon.smallFonts

Java: importing data from a big text file to MySQL

2011-09-16T11:52:00.001-05:00

These 2 classes show you how to read a HUGE TEXT file and insert data from each line to the MySQL database efficiently. The parsing of the lines is out of scope of this exercise as it will be different for each application.

package com.your_package.data;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.SQLException;

import java.sql.Statement;

import java.util.Date;

public class YourClassName

{

public static void main(String[] args)

{

String db = "your_db_name";

String user = "root";

String password = "your_password";

Connection connection = makeDbConnection(db, user, password);

BigTextFile file = null;

try

{

file = new BigTextFile("/Users/uki/Documents/file_name.txt");

} catch (Exception e)

{

e.printStackTrace();

}

for (String line : file)

{

// process line here the way you want it

System.out.println(line.substring(line.lastIndexOf("|") + 1));

String partNumber = "0001";

String attributeName = "some name";

String attributeValue = "some value";

String sql = buildInsertSqlStatement(attributeName, attributeValue, partNumber);

insertIntoDb(connection, sql);

break; // remove after all works

}

private static String buildInsertSqlStatement(String attributeName, String attributeValue, String partNumber)

{

StringBuffer sql = new StringBuffer();

sql.append("INSERT INTO your_database_name.table_name VALUES (");

sql.append("'" + attributeName + "'");

sql.append(", '" + attributeValue + "'");

sql.append(", '" + partNumber + "' );");

return sql.toString();

}

private static void insertIntoDb(Connection connection, String sql)

{

final String TAG = YourClassName.class.getCanonicalName();

try

{

Statement st = connection.createStatement();

System.out.println(TAG + "Executing: " + sql);

int val = st.executeUpdate(sql.toString());

System.out.println(TAG + " Returned: " + val);

} catch (SQLException e)

{

System.out.println("SQL insert failed " + e);

}

System.out.println(TAG + "Finished " + new Date());

}

private static Connection makeDbConnection(String db, String user, String password)

{

Connection con = null;

try

{

String url = "jdbc:mysql://localhost:3306/";

String driver = "com.mysql.jdbc.Driver";

Class.forName(driver);

con = DriverManager.getConnection(url + db, "root", "");

} catch (Exception e)

{

e.printStackTrace();

}

return con;

}

package com.your_package.data;

import java.io.BufferedReader;

import java.io.FileReader;

import java.util.Iterator;

public class BigTextFile implements Iterable

{

private class FileIterator implements Iterator

{

private String line;

public boolean hasNext()

{

try

{

line = bufferedReader.readLine();

} catch (Exception ex)

{

line = null;

ex.printStackTrace();

}

return line != null;

}

public String next()

{

return line;

}

public void remove()

{

}

private BufferedReader bufferedReader;

public BigTextFile(String filePath) throws Exception

{

bufferedReader = new BufferedReader(new FileReader(filePath));

}

public void Close()

{

try

{

bufferedReader.close();

} catch (Exception ex)

{

}

public Iterator iterator()

{

return new FileIterator();

}

MySQL: importing table data from text file

2011-09-16T11:46:00.000-05:00

You can import table data from text file.

If columns are matched in order to delimited file, then it is very easy, example data:

column1data|column2data|column3data| |column5data
column1data|column2data|column3data|column4data|column5data

Note that the file name should be the exact name of the table you are writing to:

uki: ~ $ mysqlimport --local -u root --fields-terminated-by="|" sears_product_info /Users/uki/Documents/XYZ/table_name.txt

database_name. table_name: Records: 526733 Deleted: 0 Skipped: 526733 Warnings: 557695

Note that if the record already exists then it will not be imported again (a good feature for me).
If you want to clean the table content then you execute

DELETE FROM database_name. table_name

The import of 500,000 records may take up to 10 minutes on MacBook Pro.

Android: obtaining Google Map apiKey

2011-09-16T09:43:00.003-05:00

FOR DEVELOPERS (not deployment to Market):

1. Find you debug.keystore file (all of them will give you the same certificate signature)

2. Open Terminal and execute keytool command

uki: ~ $ keytool -list -alias androiddebugkey -keystore /Users/uki/Documents/workspace/XYZ/keystore/debug.keystore -storepass android -keypass android

androiddebugkey, Jan 21, 2010, PrivateKeyEntry,

Certificate fingerprint (MD5): A0:AC:1A:E2:E7:06:C2:93:CF:9E:xxxxxxx.....

FOR DEPLOYMENT (not local development):
1. Build (Export) your application for deployment at least once to you have your deployment signature. Follow the wizard and make certificate for 35 years.

2. Use the same keytool utility:

uki: ~ $ keytool -list -keystore /some_directory/ukidlucas/Documents/keystore_name.keystore
Enter keystore password:

Keystore type: JKS
Keystore provider: SUN

Your keystore contains 13 entries

[...]
taxi share - national, Sep 21, 2011, PrivateKeyEntry,
Certificate fingerprint (MD5): 15:A1:16:70:.....................................................
[...]
uki: ~ $

3. open Google Map Page: http://code.google. com/android/maps-api-signup.html

4. Copy and paste the apiKey to your Maps

Select longest records from the database

2011-09-15T14:31:00.005-05:00

To find the longest record in your table you can use this query:

SELECT max(length(column_name)) from table_name

This can help you in optimizing the size of your tables.

SELECT column_name FROM table_nameWHERE length(column_name) =
( SELECT max(length(( SELECT max(length(column_name)) from table_name );

Result is a list of records with the longest length

Execute SQL script (MySQL dump) from command line

2011-09-15T13:26:00.000-05:00

1) Find you mysql installation directory:

uki: ~ $ cd /usr/local/mysql/bin

2) Start mysql shell

uki: ~ $ ./mysql -u root

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 238

Server version: 5.5.9 MySQL Community Server (GPL)

...

3) Select database you want to execute script agaist

mysql> use my_database_name

Reading table information for completion of table and column names

You can turn off this feature to get a quicker startup with -A

Database changed

4) Execute SQL script
in the next line notice "slash dot space"

mysql> \. /Users/uki/Documents/script_name.sql

Add MySQL to PATH

2011-09-15T11:16:00.000-05:00

1. Open Terminal go to your home directory

uki: ~ $ cd ~

2. see if you already created .bash_profile

uki: ~ $ ls .bash*
.bash_history .bash_profile

3. if .bash_profile is not there execute

uki: ~ $ touch .bash_profile

4. open file for editing

uki: ~ $ open .bash_profile

or using your favorite editor

uki: ~ $ bbedit .bash_profile

5. add content to the file

# User specific Terminal config
if [ -n "$PS1" ]; then PS1='\u: \w \$ '; fi
shopt -s checkwinsize
date -u
export PATH=$PATH:/usr/local/bin
####### JAVA DEV #######
export JAVA_HOME=/Library/Java/Home/
export PATH=$PATH:$JAVA_HOME/bin
export PATH=$PATH:/usr/local/mysql/bin

6. RE-OPEN the Terminal
7. try to run mysql command

uki: ~ $ mysql -u root
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 236
Server version: 5.5.9 MySQL Community Server (GPL)
Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
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Placing Android pop-up toasts on the screen

2011-09-14T12:52:00.004-05:00

You can place your toasts anywhere on the screen you want. In this case I put it in the center of the screen with 20 pixels off the left margin and 40 below the center line.

Toast toast = Toast.makeText(TrucksScreen.this, getString(R.string.fetching_map_details), Toast.LENGTH_SHORT);

toast.setGravity(Gravity.CENTER, -20, -40);

toast.show();

Solr Search Engine

2011-09-02T10:34:00.003-05:00

Starting the engine with Jetty (included J2EE container):

~ uki$ cd /Users/uki/solr/apache-solr-3.3.0/exampleexample uki$ java -jar start.jar

Indexing XML:

~ uki$ cd /Users/uki/solr/apache-solr-3.3.0/example/exampledocs

ushofml299009:exampledocs uki$ java -jar post.jar /Users/uki/Documents/workspace/Spin\ XSLT/SPIN_43.xml

Statistics:

http://localhost:8983/solr/admin/stats.jsp

numDocs : 17

Deploying Android apps on phones and tablets

2011-08-24T07:20:00.005-05:00

There are features like "telephony" that are supported only on phones, if you include them in your application manifest the tablet users will not be able to find the app in the Market. Google's solution to that is to deploy multiple APK under the same package.

~~~~~~~~~~~~~~~~~~~~~~~~

PHONES (deploy first):

It is OK to include android:largeScreens="true" for phones as you will see at the end.

~~~~~~~~~~~~~~~~~~~~~~~~

TABLETS (deploy second):

If you want the app to show on the Android market for tablets, deploy another APK with API-Level 9 ( android:largeScreens="true", android:minSdkVersion="9")

DO NOT include, or try android:required="false" android:name="android.hardware.telephony":

After deployment you will see 2 versions on your developer's dashboard:

Please support us and download the FREE app:

http://bit.ly/qKxRDq

XML file design and formatting

2011-08-13T09:07:00.003-05:00

It is well know that XML files are larger and therefore slower that JSON, however with careful design they don't have to be so. Remember the rule:

1) it the tag repeats only once then it should be converted to an attribute, for example:
- name, latitude, longitude, etc.

2) shorten the tag names, but don't go to far so it is still human readable
3) compress (zip) XML files when transferring them over a network

Formatting:
1) put each attribute on separate line, white space does not cost when compressed
2) extend line length to at least 120 characters for readability, your window size most likely allows for more

Still comparing iPhone to Android?

2011-08-12T10:47:00.005-05:00

Disclaimer: I ALWAYS have BOTH iPhone and Android on me, I use both. I had 3 iPhones and several Android models including tablets of both OS.

Apple has a beautiful consistency of the product, and the hardware is just yummy, but as with superior breeds of the animals, does not matter how well groomed and "purified", the diversity and evolution eventually wins as the environment constantly changes.

An Example of such changes is that I mostly write my blogs from the phone, I never thought I will be doing it, but it is convenient especially with the Google Blogger app. I would not be able to type the long articles on virtual keyboard, so I rather use an OFFSHOOT of the mobile evolutionary tree, Motorola Droid2. I don't have much love for that particular phone, but I got it for free, no argument there.

Maybe in few months I will have different needs and I will choose another model.

So today, the only way you would convince me to switch my DROID2 for iPhone is if I could sell it on eBay and buy a newer, better Android phone (with keyboard).

For me, there is no comparison, iPhone loose hands down on daily basis.

Couple of examples:

If you want to have an alarm app (check out our Shame Alarm app) on iPhone you have to start it and leave it in the foreground -- and that is only one of the many problems of iOS, Google solved it long time ago.
I use desktop widgets on my phone all the time, iPhone may have them soon.
Switching between running apps, I do it all the time bouncing between email and chat and browser and blogger.
I type probably 3 hours a day on my phone, including my blogs, emails, chat, there is no keyboard on any iPhone

I cannot live without the above, and hundred other features users of iOS never heard of.

Let me know what features of each platform you find a must-have.

Current Mobile OS share in USA

2011-08-11T14:53:00.000-05:00

1) iOS: 38%
2) Android: 35%
3) Blackberry: 15%

Using stereo 3.5mm jack to communicate with IR remote

2011-08-05T11:14:00.018-05:00

I was thinking about making a universal 3.5mm jack device (IR and more).

This is not a new idea, versions of it has been around for 7 years, but it is still a cool project.

Griffin had something like that patented for several years, read this article, it is still cool. RedEye Mini has recently covered it commercially. Total Control seems to have Android version.

For IR remote, the first approach is to communicate to 3.5mm jack, it seems that you can pre-record messages as 36kHz - 44kHz, 16bit Stereo square PCM (pulse-code modulation) wave files. Here is a geeky in-depth article from 8051projects.net.

RedMote is providing Android source code and apk as well as few sample WAV files. The design is very cool:

Here are the components needed as provided by RedMote:

Hackint0sh.org (Former Bender) is providing great schematics for the project:

Quoting from the article: "two IR LEDs mounted in reverse [..] each IR LED will emit half the signal/frequency (15~20Khz). Together they will reproduce the original IR frequency exactly like the original remote."

The optimal solution of course it to develop a sound generator and plug in the remote specifications.
Here is a listing of remote specifications.

I also think it would be cool to design Arduino board/shield that would plug in to 3.5mm jack and be able to receive:

IR emitter for controlling AV equipment (and add some social sharing component to TV watching)
IR proximity sensor to trigger stuff like alarm, or camera/voice recording
Ultrasound Sonar for various distance detection
and more..

Magnetic Card Reader

2011-08-05T10:41:00.000-05:00

Here is a cool DIY project for couple of bucks worth of components:

http://members.cox.net/berniekm/card.html

Android: including HTML pages stored within the app

2011-08-03T09:38:00.001-05:00

Let's say we have a "Welcome", or "Help" HTML page that we want to include in the app. We put it in the assets directory, I created subfolder there called html.

Now I can call:

webView.loadUrl("file:///android_asset/html/index.html");

Tablets have made to Chili's

2011-08-02T21:32:00.001-05:00

Read my blog post at:
http://uki.blogspot.com/2011/08/chili-ziosk-kiosk-tablets.html

Square - Credit Card Reader

2011-08-01T10:48:00.000-05:00

What's that? Micro iPod, toy tank, satellite dish? Not sure and I don't care as long as it has Android APIs. squareup.com

My dream Android device

2011-07-31T11:19:00.001-05:00

I have been using Motorola Droid one and two because of the keyboard. I am writing emails, posts and massive amount of messaging and keyboard is simply superior to virtual keyboard, even with Swype.

I would really cherish a large (4.3 inch), flat phone with a usable slide out keyboard like Motorola Droid2.

I would also love if that device had:
1) keyboard (mentioned)
2) large 4.x screen (mentioned)
3) NFC chip
4) ADK libraries
5) clean Google Android OS, no manufacturer add ons
6) HDMI out

Failed to install .apk on device : timeout

2011-07-27T17:11:00.001-05:00

Of all the devices I own, Samsung Galaxy Tab 7 (Sprint) gives me this error frequently:

[2011-07-27 17:05:17 - DemoKit] Failed to install DemoKit.apk on device '35321XYZ': timeout

[2011-07-27 17:05:17 - DemoKit] Launch canceled!

[2011-07-27 17:10:22 - DemoKit] Uploading DemoKit.apk onto device '35321XYZ'

[2011-07-27 17:10:23 - DemoKit] Installing DemoKit.apk...

[2011-07-27 17:10:28 - DemoKit] Success!

Yes, QR codes can be a beautiful part of the overal design

2011-07-25T10:25:00.000-05:00

Mashable posted some great examples of beautifully designed QR codes.

Android device sizes and resolutions

2011-07-25T06:44:00.000-05:00

I use the following 4 sizes:

drawable-small: ignored, hardly anyone uses phones like that
drawable-normal-mdpi: older phones with about 3 inch screens, 480x320px resolution, e.g. MyTouch
drawable-normal-hdpi: most phones with 3 to 4.3 inch phones with 480 wide screens: Droids, Nexus, etc.
drawable-large: 5 and 7 inch tablets: Samsung Galaxy Tab 7
drawable-xlarge: 8 to 10 inch tablets, eg. Motorola Xoom, Samsung Galaxy 8.9 and 10.1

Corresponding folders are created for layout, e.g. layout-mormal-mdpi and so on.

The distinction between normal-mdpi and normal-hdpi is very important as these phones have totally different sizes.

In the picture below you can see these sizes being tested with the same content.

Arduino Mega 2560 - use of pins

2011-07-21T14:08:00.001-05:00

pins 2 to 13: Provide 8-bit pulse width modulation (PWM) output with the analogWrite(pin, value) function where value is between 0 (off) and 255 (full on). Used to light a LED at varying brightnesses or drive a motor at various speeds.The frequency of the PWM signal is approximately 490 Hz.

int ledPin = 9; // LED connected to digital pin 9
int analogPin = 3; // potentiometer connected to analog pin 3
int val = 0; // variable to store the read value
void setup()
{
pinMode(ledPin, OUTPUT); // sets the pin as output
}
void loop()
{
val = analogRead(analogPin); // read the input pin
analogWrite(ledPin, val / 4); // analogRead values go from 0 to 1023, analogWrite values from 0 to 255
}

Electronic Components

2011-07-21T06:08:00.005-05:00

Positive DC terminal (higher voltage)
Thermistor (temperature dependent resistor)
Potentiometer (variable resistor)
LDR (light dependent resistor)
Resistor
Ground (lower voltage)

pin 13 of Arduino board
PWV (pulse modulated voltage)
isolating resistor
NPN transistor
ground (low voltage, not Arduino)
motor
battery +9V
voltage spike safety circuit
capacitor to store excess voltage
diode (one way flow) to drain excess voltage

Eclipse emulating Android Galaxy Tab 7

2011-07-20T16:49:00.002-05:00

Step 1

Install "Available Packages" from "third party Add-ons" for Galaxy Tab by Samsung.

I found only API 8 level, not 10.

Step 2

Select "Target:" Galaxy Tab..

SD Card: Size 2048 Mib

New.. Device ram size 512

The rest will be default.

Step 3

Click Start...

select Scale display to real size

Screen Size (in): 11

On MacBook Pro is makes the emulator about the right size.

Eclipse - Galaxy Tab 7 with Android 2.3.4 not showing in Devices

2011-07-19T22:04:00.008-05:00

Problem:

The Tablet is not showing in the "Devices" view.
Settings > Applications > Development > USB debugging is grayed out and not available to select.

The fix to the problem was simple, however it took several days to figure out as I always connect USB as a first thing:

unplug the USB cable
the "USB debugging" checkbox becomes available
select (check) "USB debugging"
re-connect the USB and it should show in devices

While investigating my options I updated from "Available Packages"
GALAXY Tab by Samsung Electronics., Android API 8, revision 1

You can also file-transfer APK to your device:

Google ADK - running DemoKit Android application

2011-07-19T21:27:00.007-05:00

Set up of Eclipse and Arduino is necessary prior to following this tutorial.

Step ..

Eclipse > File > New Project > Android > Android Project

The source code for the DemoKit app is in:

~/Documents/Arduino/ADK_release_0512/app/AndroidManifest.xml

For Build Target, select Google APIs (Platform 2.3.3, API Level 10).

Step..

Possible problems:

Problem 1: Android 3.0 NOT 3.1

[2011-07-19 22:39:02 - DemoKit] Performing com.google.android.DemoKit.DemoKitLaunch activity launch
[2011-07-19 22:39:06 - DemoKit] Uploading DemoKit.apk onto device '380624742017317'
[2011-07-19 22:39:08 - DemoKit] Installing DemoKit.apk...
[2011-07-19 22:39:09 - DemoKit] Installation error: INSTALL_FAILED_MISSING_SHARED_LIBRARY
[2011-07-19 22:39:09 - DemoKit] Please check logcat output for more details.
[2011-07-19 22:39:09 - DemoKit] Launch canceled!

[2011-07-19 22:40:49 - DemoKit] ERROR: Application requires API version 12. Device API version is 11 (Android 3.0.1).
[2011-07-19 22:40:49 - DemoKit] Launch canceled!

Solution (partial):
Samsung Galaxy Tab 10.1 is NOT 3.1, but 3.0.1 as of this writing therefore the libraries are missing. Update the device to current 3.1 in the
Settings > About tablet > System Updates > Update

Problem 2: Missing UsbManager

07-20 06:29:53.880: ERROR/AndroidRuntime(7879): FATAL EXCEPTION: main
07-20 06:29:53.880: ERROR/AndroidRuntime(7879): java.lang.NoClassDefFoundError: com.android.future.usb.UsbManager
07-20 06:29:53.880: ERROR/AndroidRuntime(7879): at com.google.android.DemoKit.DemoKitActivity.onCreate(DemoKitActivity.java:152)

Solution: TBD

Answer from Samsung on StockOverflow

Accessory mode currently doesn't work with the Samsung Galaxy Tab 10.1. Samsung is aware of the issue and is working on resolving it. When the device does support accessory mode you should be able to use the com.android.future.usb.* APIs which will make it easier for you to write an app that works both with Android 3.1 and 2.3.4.

Google ADK - Arduino setup

2011-07-19T20:52:00.005-05:00

This tutorial explains how to set up Android ADK / Arduino environment based on the official instructions.

Step ..

Copy directories from:

~/Documents/Arduino/ADK_release_0512/firmware/arduino_libs

copy to:

~/Documents/Arduino/libraries

Step ..

Create directory:

~/Documents/Arduino/libraries/CapSense

Step ..

Copy ..

~/Documents/Arduino/libraries/CapSense $ ls

CapSense.cpp CapSense.h

Step ..

Installing the Google APIs Add-On (instructions)

Install "Third party Add-ons" - Google APIs 10 revision 2

Apple iOS distribution building nightmare with XCode 4

2011-07-03T08:38:00.001-05:00

I have been trying to post an iOS app that has been ready and tested for a while now. The app runs fine on iPhone and iPad. I already went thru the 12 hour nightmare-effort of certificates and provisioning profiles. The app has also passed the verification by apple iTunes Connect, too... yet, as I am reading the posts of people having similar problems to mine I realize Apple makes it purposely a NIGHTMARE. For me that is UNNECESSARY waste of time and honestly makes me not want to make Apple native application anymore.

Here are some of the COMMENTS I found on the bulletin boards:

Btw, I've never heard of anyone getting this process right on the first try. It's not meant to be easy. Consider it to be an examination. I.e. to place your app in the store, it's not sufficient to have simply learned how to develop the software.

--

Strange as these steps may seem, they worked for me last time I had your problem (e.g. why delete all the build directories if you already cleaned all targets? And why re-enter the exact code-signing identity you just deleted??Just do it!).

--

On my first try I filled in the wrong line, and it took all night to find the problem.

--

Xcode 4 has made my life miserable. I am very familiar with Xcode 3.2.6 and have built and submitted several applications to the iTunes but now I am stopped at a very basic task. How to build the release version, find and compress the built iPhone bundle, and submit it to the AppStore with this X#2&% ?

Android: Unknown Error NullPointerException “Android Packaging Problem”

2011-02-13T21:35:00.000-06:00

I got the above error when I was renaming some Library projects, there was no obvious code problem, so it was difficult to figure out what is wrong.

I tried the usual following:

Checked all library projects in Properties > Android (they were good)
Project > Clean..
Restart Eclipse

None of the above worked, finally I had to go to .classpath file and deleted the classpath tags and re-added the Reference Libraries, after the project rebuilt the problems cleared.

Top Mobile OS in United States

2010-07-02T11:42:00.003-05:00

Source: StatCounter Global Stats - Mobile OS Market Share

Using java.util.Properties in Servlet to save User Preferences

2010-07-02T10:10:00.000-05:00

import java.util.Properties;

String propertiesFileName = "my_properties.txt";

SAVE PREFERENCES:

Properties unsavedProperties = new Properties();

unsavedProperties.setProperty("my_name", "Uki");

OutputStream propOut = new FileOutputStream(new File(propertiesFileName));

unsavedProperties.store(propOut, "My Server properties");

LATER READ THE SAVED PREFERENCES:

InputStream inStream = new FileInputStream(propertiesFileName);

Properties savedPropeties = new Properties();

savedPropeties.load(inStream);

String myName = savedPropeties.getProperty("my_name");

Java Servlet: starting a thread that always runs

2010-06-25T03:37:00.000-05:00

when Java Servlet starts it reads web.xml
add listener implementation class to your web.xml

<display-name>your_servlet_namedisplay-name>

<listener-class>com.your_package_name.TimedServletCallerlistener-class>

listener>

we will use ServletContextListener interface
create a NEW thread (Loop) inside contextInitialized(), if you did Thread.sleep without new thread the whole Servlet would pause and container would fail to start it after 45 seconds or so

public class TimedServletCaller implements ServletContextListener

{

private static int sleepMinutes = 1;

class Loop extends Thread

{

public void run()

{

while (true)

{

Log.e("Loop is running!");

takeShortNap();

// do stuff here

}

@Override

public void contextInitialized(ServletContextEvent arg0)

{

Log.e("***** TimedServletCaller.contextInitialized()");

// execute();

Thread thread = new Loop();

thread.start();

}

private static void takeShortNap()

{

Log.i(" Pausing for " + sleepMinutes + " minute(s).");

try

{

Thread.sleep(sleepMinutes * 60 * 1000);

} catch (InterruptedException e)

{

Log.e(e.getMessage());

}

restart your server (Tomcat) now you can use your Servlet, but also the Loop keeps running and doing useful things like database updates, etc.

Google IO Bootcamp iPad drawings

2010-05-19T15:42:00.000-05:00

http://www.flickr.com/photos/dnsf/sets/72157623967332393/detail/

HD connector speed

2010-04-13T11:23:00.000-05:00

When you are buying the external hard drive storage, I would recommend looking for eSATA connectors, backing up, or copying videos via USB is very slow.

USB 1.1 – 15 Mbps
FireWire (1394a) – 400 Mbps
USB 2.0 – 480 Mbps
FireWire 800 (1394b) – 800 Mpbs
SATA 1.5 – 1.5 Gbps
SATA 3.0 – 3.0 Gbps

near future:

USB 3.0 - 5Gbps
eSATA version of SATA 6G - 6.0Gb/s

Google Documents - please show this to your boss!

2010-04-06T15:44:00.001-05:00

We have been using Google docs and Google sites for collaboration for couple of years now, but there are still people who have not heard about the concept. Here is a video to help.

Using HTML panel

2010-04-05T11:29:00.004-05:00

I needed to create a subscript text with a link that open up a new popup with different content. Since HorizontalPanel does not work, I used HTMLPanel and use the table tag, which contained element id as shown below.

Click on below image to read the code: CSS

CSS code:

.subscript {

font-size: xx-small;

vertical-align: bottom;

}

.hyperlink_subscript {

text-decoration: none;

cursor: pointer;

color: #0099FF;

font-size: xx-small;

font-weight: normal;

}

Here is how it looks:

Apache Tomcat: starting, stopping and killing processes

2010-03-31T11:19:00.001-05:00

STOPPING:
/opt/apache/apache-tomcat-6.0.26/webapps $ ../bin/shutdown.sh
Using CATALINA_BASE: /opt/apache/apache-tomcat-6.0.26
Using CATALINA_HOME: /opt/apache/apache-tomcat-6.0.26
Using CATALINA_TMPDIR: /opt/apache/apache-tomcat-6.0.26/temp
Using JRE_HOME: /Library/Java/Home/
Using CLASSPATH: /opt/apache/apache-tomcat-6.0.26/bin/bootstrap.jar
Mar 31, 2010 11:13:58 AM org.apache.catalina.startup.Catalina stopServer
SEVERE: Catalina.stop:
java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:432)
at java.net.Socket.connect(Socket.java:525)
at java.net.Socket.connect(Socket.java:475)
at java.net.Socket.(Socket.java:372)
at java.net.Socket.(Socket.java:186)
at org.apache.catalina.startup.Catalina.stopServer(Catalina.java:408)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.stopServer(Bootstrap.java:338)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:416)

CHECKING IF STILL RUNNING:
/opt/apache/apache-tomcat-6.0.26/webapps $ ps aux | grep tomcat
uki 3086 57.9 6.8 1506508 143136 s000 U 11:12AM 0:22.70 /Library/Java/Home//bin/java -Djava.util.logging.config.file=/opt/apache/apache-tomcat-6.0.26/conf/logging.properties -Xms128m -Xmx512m -XX:PermSize=128m -XX:MaxPermSize=256m -Dfile.encoding=UTF-8 -Dcom.sun.management.jmxremote -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/opt/apache/apache-tomcat-6.0.26/endorsed -classpath /opt/apache/apache-tomcat-6.0.26/bin/bootstrap.jar -Dcatalina.base=/opt/apache/apache-tomcat-6.0.26 -Dcatalina.home=/opt/apache/apache-tomcat-6.0.26 -Djava.io.tmpdir=/opt/apache/apache-tomcat-6.0.26/temp org.apache.catalina.startup.Bootstrap start
uki 3120 0.2 0.0 590540 204 s000 U+ 11:14AM 0:00.00 grep tomcat

KILL A PROCESS:
/opt/apache/apache-tomcat-6.0.26/webapps $ kill 3086

CHECKING IF STILL RUNNING:
/opt/apache/apache-tomcat-6.0.26/webapps $ ps aux | grep tomcat
uki 3122 0.9 0.0 600020 472 s000 R+ 11:14AM 0:00.00 grep tomcat

STARTING:
ill-lt20220@(Wed Mar 31 11:14:27) /opt/apache/apache-tomcat-6.0.26/webapps $ ../bin/startup.sh
Using CATALINA_BASE: /opt/apache/apache-tomcat-6.0.26
Using CATALINA_HOME: /opt/apache/apache-tomcat-6.0.26
Using CATALINA_TMPDIR: /opt/apache/apache-tomcat-6.0.26/temp
Using JRE_HOME: /Library/Java/Home/
Using CLASSPATH: /opt/apache/apache-tomcat-6.0.26/bin/bootstrap.jar
ill-lt20220@(Wed Mar 31 11:14:33) /opt/apache/apache-tomcat-6.0.26/webapps $ ps aux | grep tomcat
uki 3132 49.5 3.6 1504832 74680 s000 U 11:14AM 0:06.14 /Library/Java/Home//bin/java -Djava.util.logging.config.file=/opt/apache/apache-tomcat-6.0.26/conf/logging.properties -Xms128m -Xmx512m -XX:PermSize=128m -XX:MaxPermSize=256m -Dfile.encoding=UTF-8 -Dcom.sun.management.jmxremote -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/opt/apache/apache-tomcat-6.0.26/endorsed -classpath /opt/apache/apache-tomcat-6.0.26/bin/bootstrap.jar -Dcatalina.base=/opt/apache/apache-tomcat-6.0.26 -Dcatalina.home=/opt/apache/apache-tomcat-6.0.26 -Djava.io.tmpdir=/opt/apache/apache-tomcat-6.0.26/temp org.apache.catalina.startup.Bootstrap start
uki 3134 0.0 0.0 590736 308 s000 R+ 11:14AM 0:00.00 grep tomcat
ill-lt20220@(Wed Mar 31 11:14:41) /opt/apache/apache-tomcat-6.0.26/webapps $

CHECKING THE LOG:

/opt/apache/apache-tomcat-6.0.26/webapps $ tail -f ../logs/catalina.out
Mar 31, 2010 11:15:12 AM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory work
Mar 31, 2010 11:15:12 AM org.apache.coyote.http11.Http11Protocol start
INFO: Starting Coyote HTTP/1.1 on http-8080
Mar 31, 2010 11:15:12 AM org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
Mar 31, 2010 11:15:12 AM org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/88 config=null
Mar 31, 2010 11:15:12 AM org.apache.catalina.startup.Catalina start
INFO: Server startup in 36930 ms

Mac: location of hosts file

2010-03-31T11:11:00.000-05:00

The hosts file on Mac is located at: /private/etc/hosts
The easiest way to modify it is using pico, you need to have WRITE permissions to do so.

~ $ cd /private/etc/
/private/etc $ pico hosts

Eclipse: show line numbers

2010-03-29T15:17:00.000-05:00

This is simple stuff, but it is frustrating when you want to show line numbers and cannot find the setting:

On Mac:

Eclipse -> Preferences -> General -> Editors -> Text Editors -> Show line numbers

IE8 and Windows7 hacked easily

2010-03-26T16:36:00.003-05:00

I don't think anything with Windows is really safe...

http://www.computerworld.com/s/article/9174101/Hacker_busts_IE8_on_Windows_7_in_2_minutes

I wonder if Mac vulnerabilities would be found this easy if we put effort towards it or does everyone just like to pick on Microsoft?

Virus test file (it is save to use)

2010-03-09T13:03:00.000-06:00

In case you write a code to test your anti-virus software you will need a "test virus file" that does not actually wipe out your computer, you can download it from this site...

http://eicar.org/

How to fetch total record count using Hibernate Criteria

2010-02-16T12:09:00.001-06:00

Criteria criteria = getSession().createCriteria(getReferenceClass());

criteria.setProjection(Projections.projectionList().add(Projections.countDistinct("id"))

Twitter had enough...

2010-02-15T16:37:00.000-06:00

Changing mysql password

2010-02-15T14:03:00.000-06:00

I was getting below error when I run jUnit tests:

WARN 2010-02-15 13:39:25.602 org.hibernate.util.JDBCExceptionReporter.logExceptions()
   SQL Error: 0, SQLState: null
ERROR 2010-02-15 13:39:25.627 org.hibernate.util.JDBCExceptionReporter.logExceptions()
   Cannot create PoolableConnectionFactory (Access denied for user 'root'@'localhost' (using password: YES))
WARN 2010-02-15 13:39:25.629 org.hibernate.cfg.SettingsFactory.buildSettings()
   Could not obtain connection metadata
org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Access denied for user 'root'@'localhost' (using password: YES))
at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1225)
at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880)

Solution:

I needed to change mysql server password using command line:

mysqladmin -u root -p'oldpassword' password newpass

25 reasons why I should be developing on Android platform

2010-02-11T21:41:00.000-06:00

"Google Buzz", social networking

2010-02-09T13:26:00.000-06:00

Google, which has faltered in its attempts to break into the booming social networking business, is making another bid to counter the growing influence of Silicon Valley rival Facebook and San Francisco upstart Twitter with new products that make it easier to share with friends on its Internet e-mail service Gmail.

The Internet giant held a press conference at its Mountain View, Calif., headquarters Tuesday to show off "Buzz," which incorporates social media tools such as photo and video sharing and status updates in Gmail. Google Buzz, which launches Tuesday, will also be accessible on mobile phones. And Google will eventually also debut a version of Buzz for businesses.

Google co-founder Sergey Brin, vice president of product management Bradley Horowitz, vice president of engineering Vic Gundotra, and product manager Todd Jackson were on hand to show it off. The tagline for Google Buzz is "a Google approach to sharing."

Buzz is perhaps Google's boldest effort yet to get social. The new service has five features, Jackson said. You will automatically follow the people you e-mail and chat with on a regular basis. You will be able to share content from around the Web, including YouTube videos, Flickr photos, site links and others. You will be able to share your thoughts in a public way and in a private way. You will get social updates in your inbox. And Google will help you find only the stuff that matters by recommending popular content. The mobile version of Buzz can figure out where you are and show you nearby buzz posts.

"Google has long said their goal is to organize the world's information. With the introduction of Buzz, you can see the company recognizes how social has become a 'Google scale' problem that needs improved discovery and real relevancy," said technology blogger Louis Gray. "People are sharing their content in a wide variety of social sites online, and Buzz is the first product from Google that looks to harness this data in one place and provide a platform for discussion."

Last month, Google introduced a new feature that displays search results related to their friends and other members of their social networks. Google has been trying for years to gain a foothold in social networking as its smaller, more nimble competitors steal some of its thunder. Orkut, its social networking service, gained a mass following in Brazil and nowhere else. Attempts to buy its way into the arena also failed, when Google acquiring -- then ultimately scrapped -- the services offered by Twitter competitor Jaiku and Foursquare forebearer Dodgeball.

Analysts remain skeptical that this effort will catapult Google into the social stratosphere. Meanwhile, Facebook has exploded in popularity. It has become such a central part of many people's lives that it's replacing e-mail. That's exactly what Facebook founder Mark Zuckerberg is looking to do: turn his site into the starting point and focal point of the Internet experience. Facebook's strategy of connecting the world's people, versus Google's strategy of organizing the world's information, seems to be resonating. So now Google says it's going to organize the world's social information.

The Silicon Valley showdown is heating up. Google is still the Web's No. 1 most-visited site, with 173 million U.S. visitors in December, according to ComScore Media Metrix. But Facebook is gaining. Facebook was the fourth-most visited site in December, with 111.8 million visitors.

-- Jessica Guynn

http://latimesblogs.latimes.com/technology/2010/02/google-facebook-social-networking.html

iPad Revolution?

2010-02-05T12:22:00.003-06:00

Those who know me know that I have been a strong convert to the world of Mac. Over the past two years, I have had a personal Mac overhaul for all of my tech needs (except my phone, which I recently purchased the DROID and have enjoyed it thoroughly). So, when it came time for the fabled Apple tablet, I was extremely excited about the next piece of Mac-ness that I was going to be enjoying. But I was a little disappointed in the iPad initially. Where was the wow? Where was the pizazz? I was troubled.

But since that fabled day, I have picked up the pieces of my shattered dreams and started to reevaluate all of the potential that exists with the iPad. I initially fell into the trap of looking at this new piece of technology from the definitions of "nerd-dom". What I failed to see was this product from the point of view of the person who uses their computer to check email, browse the internet, look at photos, and that is it.

Here is an article and an essay that I thought were very interesting in seeing what could be the iPad revolution:

http://www.macworld.com/article/146040/2010/02/ipad.html
http://northtemple.com/2010/02/01/on-ipads-grandmas-and-gam

Let me know what you think!

Chicago Android Google conference and eco hackathon

2010-02-01T20:14:00.000-06:00

Saturday Feb. 6, 2010,
hurry up we are closing the registrations!

http://chigtug6.eventbrite.com/

Apple iPad: Flash not supported? Choose GWT over Flex!

2010-01-27T13:01:00.000-06:00

This maybe a temporary battle, but if iPad is NOT supporting Flash/Flex then my choice for developing RIA Web applications remains Google Web Toolkit (GWT).

Apple iPad - tablet powered by 1GHz A4 chip

2010-01-27T12:47:00.001-06:00

http://www.engadget.com/2010/01/27/the-apple-ipad/

How to create a label with an image background in GWT

2010-01-21T10:35:00.003-06:00

In order to create a label with an image background, you will need to use an AbsolutePanel with an image background defined in CSS and add a Label to it. The reason behind using an AbsolutePanel is because this type of panel allows for positioning all children absolutely, allowing them to overlap. Keep in mind however that you will have to resize the panel to allow room for all its children because it will NOT resize automatically.

Here is a sample implementation of how this worked for me:

Java code in Samle.java:

AbsolutePanel absolutePanel = new AbsolutePanel();

absolutePanel.setStyleName("my_css_def");

Label myLabel = new Label("Hello world!");

absolutePanel.add(myLabel);

mainContainer.add(absolutePanel);

CSS definition in Sample.css file:

.my_css_def {

background-image: url("../images/myPath/bg_image.png"); !important;

height: 73px;

width: 108px;

}

Great Analytics Tool

2010-01-19T09:59:00.002-06:00

If you are looking for a great analytics tool for your website, check out Woopra. It is now out of beta. I have seen it used a little and it looks pretty impressive. The basic plan is free, but if you are needing a little bit more information, here are the plans offered (http://www.woopra.com/plans/)

Google NexusOne

2010-01-14T20:40:00.001-06:00

http://mobile.techcocktail.com/2010/01/release-of-google-nexusone-adds-momentum-focus-for-app-developers/

Motorola Backflip announced; hands-on impressions | CES 2010 - CNET

2010-01-13T19:01:00.000-06:00

http://ces.cnet.com/8301-31045_1-10428131-269.html?tag=facebook2

Transparency Setting for ALL Browsers

2010-01-12T09:30:00.003-06:00

Below is CSS definition that creates transparency for all browsers:

.opacity_70 {

filter:alpha(opacity=70); /**for IE8*/

-moz-opacity:0.7; /**for Mozilla*/

-khtml-opacity: 0.7; /**for Safari 1.x*/

opacity: 0.7; /**for FireFox*/

}

Solar Powered Skins for iPhone and iPod

2010-01-11T07:02:00.000-06:00

Solar power iPhone skins are getting more popular for everyone. Apple devices with solar powered chargers are already available in the market, but solar powered skins are not. These skins are capable of charging an iPhone or iPod using solar energy. According to Heimbuch from TreeHugger, one of the solar power skins is capable for providing 30 minutes talk time on a 2G network with 2 hours of solar energy charging. Also these skins are shipped with a solar planner application which helps estimating the needed solar charge time during the day in order to have a working phone in the evevning.

Solar powered chargers can provide few minutes of talk time, however with high consumer demand, these devices may gain wider popularity leading to more competition and better quality overall.

Steve Jobs' 2005 Stanford Commencement Address

2010-01-09T16:31:00.002-06:00

OfficePort Chicago: doing the "gigs" for work

2010-01-09T15:13:00.001-06:00

http://abcnews.go.com/video/playerIndex?id=9517202

Color Palette Generator

2010-01-05T09:12:00.001-06:00

Here is a very nice color palette generator that creates both a dull and vibrant color palette based off of a photo url.

http://www.degraeve.com/color-palette/

What Makes Farmville so Sticky and Viral

2010-01-02T16:58:00.001-06:00

http://blog.pekpongpaet.com/2010/01/02/what-makes-farmville-so-sticky-and-viral/

Google Netbook Specs Preview

2009-12-29T09:23:00.003-06:00

It looks like the specs to the Google Chrome OS netbook were released, here is a link below.

http://www.ibtimes.co.uk/articles/20091227/google-chrome-based-netbook-tech-specs-are-out.htm

Brill IP Law Office – Opening January 2010

2009-12-26T09:45:00.000-06:00

Brill IP Law Office applies business sense and cost-effectiveness in counseling on intellectual property (IP) legal matters. Robert J. Brill is adept at patent and trademark application preparation and prosecution, in the US and internationally, related searches and opinions, licensing, and further IP counseling. His clients have included startups, small to midsize companies, Fortune 500 companies, and universities worldwide. Bob’s experience covers a wide range of electrical, software, medical, computer, imaging, financial, telecommunications, mechanical, and clean technologies.

read more ..

http://bobbrill.net/?p=2105

MOTODEV Keynote Summit

2009-12-23T04:30:00.000-06:00

MOTODEV Summit – January 13, 2010, Beijing China
Please join Christy Wyatt, Corporate Vice President, Software Applications & Services, as we kick-off MOTODEV Summit China 2010, with a keynote presentation that will delve into the latest market trends and highlight the opportunities available to you to deliver break through applications for the next generation of Motorola Android Handsets. Attend to get the big picture perspective to help you navigate through a day of in-depth sessions and tutorials and guide you to the detailed information, tools and knowledge you need to succeed with Motorola.

Register:
http://developer.motorola.com/eventstraining/summit/beijing10/?utm_campaign=Beijing10-2&utm_medium=email&utm_source=email

The Meaning of Open

2009-12-22T09:54:00.003-06:00

Here is a great blog post written by Jonathan Rosenberg, Senior Vice President, Product Management at Google on what it means to be "open" and how Google is actively seeking that goal. I would love to hear people's comments.

http://googleblog.blogspot.com/2009/12/meaning-of-open.html

MOTODEV: Motorola's development studio for Android Apps

2009-12-20T10:05:00.001-06:00

MOTODEV is Motorola's development studio for Android cell phone applications. Here is some of the key highlights:

Complete Development Package
Code Snippets
Application Creation Wizards
Database Managemen
Localization Files Editor
Handset Emulators
Virtual Developer Lab
Deploy Package
Application Signing
Marketing Integration
Target Motorola Handsets
Context-Sensitive Help and Integrated Documentation

HTML5 and GWT might be the future

2009-12-19T18:41:00.002-06:00

WIth all the advances in browser technology and HTML5 I am very optimistic about the future of Google Web Toolkit (GWT) which uses JavaScript.

My only concern is with ability of a lot of users of IE to update to modern browsers, that however, will not stop niche developers (companies) from creating interactive sites, games and communities. There is already a trend to ignore IE6 users altogether.

This is a demo that demonstrates the potential of rendering 3D graphics in the browser, using O3D, an open-source web API for creating rich, interactive 3D applications in the browser. The app shown in the video is coded in JavaScript and HTML and runs in a web browser. Learn more about O3D athttp://code.google.com/apis/o3d

Needed: Architect: Flex UI and Java backend

2009-12-17T09:35:00.004-06:00

Job Description:

  Evaluate architecture of the existing Flex (Java backend) application for a large client servicing many fortune 500 companies. Provide technical solutions to improve UI speed, scalability and ability to rapidly customize the application for the future clients. Mentor fellow teammates of the best practices of Flex development.

  Job Qualifications: 

Experience as system architect and mentor.
Minimum of two (2) years of professional Flex application development.
Minimum of three (3) years of professional Java application development.
Ability to solve problems independently along with a strong teamwork sense, communication skills, often pair-programming and knowledge sharing.
Familiarity with open source frameworks such as Hibernate, Spring and Maven.
Experience with modern database (MySQL/Oracle) is required.
At least some level of experience with UNIX-based server environment (Linux/Mac).
Willingness to learn various cutting edge technologies will be required.
Understanding of Agile/SCRUM development and other methodologies preferred.
Must be able to travel on a limited basis, typically less than 20%.
College degree (4 year) or equivalent work experience is required.

Please contact:

Uki D. Lucas email

"UkiDLucas - at - mac.com"  

We are the organizers of Chicago Google Technology conferences:
http://chigtug6.eventbrite.com/

Java: calculate last Saturday

2009-12-17T09:08:00.007-06:00

Java method that returns the date of last Saturday with time set to (00:00:00):

public class DateHelper

{

public static Date getLastSatuerday(Date date)

{

Calendar calendar = Calendar.getInstance();

int weekday = calendar.get(Calendar.DAY_OF_WEEK);

Date lastSat = DateHelper.incrementDays(date, (-weekday));

Calendar cal = new GregorianCalendar();

cal.setTime(lastSat);

cal.set(Calendar.HOUR_OF_DAY, 0);

cal.set(Calendar.MINUTE, 0);

cal.set(Calendar.SECOND, 0);

cal.set(Calendar.MILLISECOND, 0);

return cal.getTime();

}

//increment hours of day

public static Date incrementHours(Date date, int hours)

{

GregorianCalendar calendar = new GregorianCalendar();

calendar.setTime(date);

calendar.add(Calendar.HOUR_OF_DAY, hours);

return calendar.getTime();

}

JUnit test for above method:

public void test_getLastSatuerday()

{

Date date = DateHelper.buildToday();

date = DateHelper.incrementHours(date, 2);

Date weekday = DateHelper.getLastSatuerday(date);

log.warn("Today is: " + date + " , last sat is: " + weekday);

}

Output:
WARN 2009-12-17 09:05:42.306 com.xxx.xxx.server.common.DateHelperTest.test_getLastSatuerday()
Today is: Thu Dec 17 02:00:00 CST 2009 , last sat is: Sat Dec 12 00:00:00 CST 2009

Needed: Java Google Web Toolkit (GWT) Developer

2009-12-17T06:51:00.004-06:00

Job Description:
Development of Java Google Web Toolkit (GWT) based applications for sports community website and other Revere clients while following Revere Open Systems best practices and development culture.

Job Qualifications:

Minimum of three years of professional Java application development.
Ability to solve problems independently along with a strong teamwork sense, communication skills, often pair-programming and knowledge sharing.
Familiarity with open source frameworks such as Hibernate, Spring and Maven.
Experience with MySQL databases is highly desired.
Deep understanding of various social media platforms such as Facebook, Twitter, etc.
At least some level of experience with UNIX-based server environment (Linux/Mac).
Willingness to learn various cutting edge technologies will be required.
Understanding of Agile/SCRUM development and other methodologies preferred.
Must be able to travel on a limited basis, typically less than 20%.
Knowledge and passion for various sports is preferable.
College degree (4 year) or equivalent work experience is required.

contact:
Uki D. Lucas
email "UkiDLucas - at - mac.com"

We are the organizers of Chicago Google Technology conferences:
http://chigtug6.eventbrite.com/

Justin Moore - Mobile Game Development

2009-12-16T18:47:00.002-06:00

maven-compiler-plugin memory management

2009-12-14T14:58:00.002-06:00

Here is how you give more memory to maven-compiler-plugin:

http://maven.apache.org/plugins/maven-compiler-plugin/examples/compile-with-memory-enhancements.html

Fixing MySQL after upgrading to Snow Leopard

2009-12-14T14:40:00.003-06:00

After upgrading to Snow Leopard, I found that MySQL would not start for me. I found this link that walked me through getting it up and running again.

http://planet-geek.com/archives/2009/09/osx-snow-leopar.html

I haven't had the time to figure out what exactly was messed up in the installation of Snow Leopard. If anyone knows, I would be interested in that nugget of information.

CSS override

2009-12-11T11:32:00.001-06:00

To override any CSS on an element, use !important as below

#my_widget_id {

background-color: #191919 !important;
/*#191919 is gray */

}

GWT: Speed Tracer Tutorial

2009-12-08T22:27:00.002-06:00

Sending mass emails

2009-12-08T16:21:00.002-06:00

I was advising a client about a press release they sent with a tiny 0.63% of response rate.

Note: I am not a big fan of email campaigns, I believe the most effective way to communicate is when friends send stuff to friends because it is interesting to them, but sometimes you just have to blast it out...

Few generic pointers:

make subject is interesting to the recipient, eg. includes a name they recognize (their club, their own)
make sure the text of the email is short and sweet
if you are trying to make several points, use short bullets
avoid too many caps and long paragraphs
send a sample batch, adjust text and re-sent until you get acceptable response
ensure that you are addressing the right demographics
use http://bit.ly/ to track different campaign responses
use the right tools, check out http://www.mailchimp.com/

Compilation issue with gwt-dnd-2.6.5.jar - Java 1.6

2009-11-24T12:37:00.003-06:00

Recently I had to use an updated version of gwt-dnd-2.6.5.jar with Snow Leopard (Mac OS X 10.6). I was using Java 1.5 and I got below error, which indicates a class being compiled with a different Java version:

java.lang.UnsupportedClassVersionError: Bad version number in .class file

Solution: It turns out that gwt-dnd-2.6.5.jar is using Java 1.6, therefore I had use same Java version (Java 1.6) in my environment in order for my project to comile correctly.

1. Click Eclipse -> preferences -> Java -> installed JRE

2. Click Eclipse -> preferences -> Java -> compile -> select 1.6

Eclipse 3.5 installation with GWT 2.0 RC1

2009-11-24T05:48:00.011-06:00

1. Install Eclipse 3.5 (Galileo Eclipse IDE for JAVA EE Developers): http://www.eclipse.org/downloads/ Extract Eclipse package in Application directory (on your Mac).

2. Download latest Eclipse 3.5 plugin for GWT http://dl.google.com/eclipse/plugin/3.5/zips/gpe-e35-latest.zip Extract the archive into the dropins directory in your Eclipse installation. Your installation of Eclipse will now have a directory dropins/eclipse/features/com.google.gdt.eclipse.suite.e35.feature_version and some newly installed JAR files in dropins/eclipse/plugins/

Restart Eclipse. The plugin should now be installed!

3. In eclipse, Install SubEclipse (SVN):

Click on Help menu -> Install New Software -> paste http://subclipse.tigris.org/update_1.6.x and click add button

Select all options and click next

Click Finish and you will be asked to restart your Eclipse

4. Install Maven, if you are using Maven to manage dependancies in your project
Click on Help menu -> Install New Software -> paste http://m2eclipse.sonatype.org/update/http://m2eclipse.sonatype.org/update/ and click add button

Select all options and click next

Click Finish and you will be asked to restart your Eclipse

Install Java 1.5 on Snow Leopard using Pacifist

2009-11-23T08:59:00.002-06:00

Download the official Java 1.5 update 4 zip file from the Apple: Java 1.5 update 4
Open Java package (JavaForMacOSX10.5Update4.pkg file.) using Shareware utility called Pacifist ($20 per license)
After you have successfully opened the downloaded Java package:

Using Finder application, navigate to
HD -> System -> Library -> Frameworks -> Java.VMframework -> versions
Select 1.5 and 1.5.0 versions and move them to Trash. Be sure to empty your trash.
Using Pacifist, select 1.5, and 1.5.0, right-click and choose to install default location

Java 1.5 update 4 issues with Snow Leopard

2009-11-23T07:29:00.003-06:00

CAfter Mac OS X Snow Leopard upgrade, I had to download Java 1.5 update 4 and got following error:

Java for Mac OS X 10.5 update 4 can't be installed on this disk. This software can only be installed on Mac OS X Leopard

Here is a solution:

Click on Finder -> Utilities -> Disk Utility
Click on HD and run Repair HD Permissions
Restart you Mac and magic should start happening!

Also see:

Another way to fix this issue

Java 1.5 update 4 download for Snow Leopard

Google Java Technology

Developing on Amazon Kindle

Android: OAUTH

S Pen SDK 1.5

Eclipse: installing SVN Subclipse plugin

Installing Eclipse (Indigo) for Android Development

Mac OS Lion - colorful icons sidebar with SIMBL plugin

Installing Android SDK

Install Android Development Tools (ADT) Eclipse plugin

Install SVN plugin Subclipse for Eclipse Indigo

Removing Subclipse from Eclipse

Mobile Apps: Customer Feedback

Mac: Forcing Delete Trash

Mac OS X 10.7.2 "Lion" - where is my Java?! #%!

Uninstalling Android app from command line

Android: creating 9-patch image

Android Market Enigma

Android ADT 14 Declares War on My Code!

Eclipse Indigo (3.7.1) set up for Android Development

Bash Shell: Working with large text files

Eclipse: increase size of Console buffer size

Eclipse/Java: running out of memory

Java: importing data from a big text file to MySQL

MySQL: importing table data from text file

Android: obtaining Google Map apiKey

Select longest records from the database

Execute SQL script (MySQL dump) from command line

Add MySQL to PATH

Placing Android pop-up toasts on the screen

Solr Search Engine

Deploying Android apps on phones and tablets

XML file design and formatting

Still comparing iPhone to Android?

Current Mobile OS share in USA

Using stereo 3.5mm jack to communicate with IR remote

Magnetic Card Reader

Android: including HTML pages stored within the app

Tablets have made to Chili's

Square - Credit Card Reader

My dream Android device

Failed to install *.apk on device *: timeout

Yes, QR codes can be a beautiful part of the overal design

Android device sizes and resolutions

Arduino Mega 2560 - use of pins

Electronic Components

Eclipse emulating Android Galaxy Tab 7

Eclipse - Galaxy Tab 7 with Android 2.3.4 not showing in Devices

Google ADK - running DemoKit Android application

Google ADK - Arduino setup

Apple iOS distribution building nightmare with XCode 4

Android: Unknown Error NullPointerException “Android Packaging Problem”

Top Mobile OS in United States

Using java.util.Properties in Servlet to save User Preferences

Java Servlet: starting a thread that always runs

Google IO Bootcamp iPad drawings

HD connector speed

Google Documents - please show this to your boss!

Using HTML panel

Apache Tomcat: starting, stopping and killing processes

Mac: location of hosts file

Eclipse: show line numbers

IE8 and Windows7 hacked easily

Virus test file (it is save to use)

How to fetch total record count using Hibernate Criteria

Twitter had enough...

Changing mysql password

25 reasons why I should be developing on Android platform

"Google Buzz", social networking

iPad Revolution?

Chicago Android Google conference and eco hackathon

Apple iPad: Flash not supported? Choose GWT over Flex!

Apple iPad - tablet powered by 1GHz A4 chip

How to create a label with an image background in GWT

Great Analytics Tool

Google NexusOne

Motorola Backflip announced; hands-on impressions | CES 2010 - CNET

Transparency Setting for ALL Browsers

Solar Powered Skins for iPhone and iPod

Steve Jobs' 2005 Stanford Commencement Address

OfficePort Chicago: doing the "gigs" for work

Failed to install .apk on device : timeout