Java remove all blank lines in string

/**
 * @author lautturi.com 
 * Java example: remove all new blank lines in string in java
 */


import java.util.*;
import java.util.regex.*;

public class Lautturi {

	public static void main(String[] args) {
		String text = "line 1\n\nline 3\n\n\nline 5\t hello  \t \nline 6";
		String newText = text.replaceAll("(?m)^[ \t]*\r?\n", "");
		System.out.println("--------original text--------");
		System.out.println(text);
		System.out.println("--------new text--------");
			System.out.println(newText);

	}
}

output:

--------original text--------
line 1

line 3

line 5	 hello  	 
line 6
--------new text--------
line 1
line 3
line 5	 hello  	 
line 6