
In this blog, I take notes as I learn new skills for Android, Java, Python, Linux, SBC, Mac, Machine Learning and AI.
Wednesday, April 29, 2009
Eclipse Ganymede J2EE plugins
Google AppEngine:

Google AppEngine - Eclipse Ganymede Installation
- Verify installation of Eclipse Ganymede IDE for J2EE development
- open Help -> Software Updates ...
- add new site http://dl.google.com/eclipse/plugin/3.4
Friday, April 24, 2009
Google project hosting
You can host your projects using code.google.com SVN repository.
- sign up to your google account
- go to http://code.google.com/hosting/
- click "Create a new project"
- go to "Source" Tab
- check out the code using command line SVN, or Eclipse SVN plugin (tigris)
- add your files (when you copy from previous SVN project remove all .SVN folders )
- commit
Tuesday, April 21, 2009
Java String parser
To split a String into words (tokens) where delimiter is white space...
String delims = "[ ]+";
String[] tokens = someLongString.split(delims);
Now you can look thru the tokens and do comparisons, etc.
Monday, April 20, 2009
CSS: centering DIV
<body><div class="background">The centered content is here
Thursday, April 16, 2009
Using Composite Class
Monday, April 13, 2009
Wednesday, April 8, 2009
Interactive Map Implementation
Function To Censor String
public String censorString(String originalString)
{
StringBuffer orig = new StringBuffer(originalString);
Pattern p = Pattern.compile("[0-9/A-Z/a-z]+");
Matcher m = p.matcher(orig);
StringBuffer censor = new StringBuffer();
boolean result = m.find();
while (result)
{
String match = originalString.substring(m.start(), m.end());
if(match.equals("badword"))
m.appendReplacement(censor, "[censored]");
result = m.find();
}
m.appendTail(censor);
return censor.toString();
}
Monday, April 6, 2009
Adding maven and SVN plugin to Eclipse 2.4.2
Friday, April 3, 2009
GWT Client Side Date / Calculate Age
Date today = new Date();
Integer currentYear = new Integer(DateTimeFormat.getFormat("yyyy").format(today));
Integer currentMonth = new Integer(DateTimeFormat.getFormat("M").format(today));
Integer currentDay = new Integer(DateTimeFormat.getFormat("d").format(today));
Age calculating function:
public static int calculateAge(Date dob)
{
Date today = new Date();
Integer currentYear = new Integer(DateTimeFormat.getFormat("yyyy").format(today));
Integer currentMonth = new Integer(DateTimeFormat.getFormat("M").format(today));
Integer currentDay = new Integer(DateTimeFormat.getFormat("d").format(today));
Integer dobYear = new Integer(DateTimeFormat.getFormat("yyyy").format(dob));
Integer dobMonth = new Integer(DateTimeFormat.getFormat("M").format(dob));
Integer dobDay = new Integer(DateTimeFormat.getFormat("d").format(dob));
int age = currentYear - dobYear;
if((dobMonth > currentMonth) || (currentMonth == dobMonth && dobDay > currentDay))
age--;
return age;
}