Java Regex...

Parsing Using Java Regex:

import java.util.regex.*;

public class SampleRegex
{
public static void main(String[] params)
{
Pattern pattern = Pattern.compile("(.*):(.*)");
Matcher matcher = pattern.matcher(params[0]);
if(matcher.matches())
{
System.out.print("Key:");
System.out.println(matcher.group(1));
System.out.print("Value:");
System.out.println(matcher.group(2));
}
else
System.out.print("No match");
}
}

Further reading links:
1. http://www.developer.com/article.php/1460561
2. http://download.oracle.com/javase/tutorial/essential/regex/