/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String t1 = "test1:testVar('varName', 'ns2:test')";
  		String t2 = "test2:testVar('varName', 'ns2:test', 'defValue')";
  		String patternString = "\\('.*?',\\s*('.*?:.*?').*\\)";
		Pattern pattern = Pattern.compile(patternString);
		Matcher matcher = pattern.matcher(t1);
		while (matcher.find()){
			System.out.println(matcher.group(1)); 
		}
		matcher = pattern.matcher(t2);
		while (matcher.find()){
			System.out.println(matcher.group(1)); 
		} 
	}
}

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