generate 5 digit random string in java

/**
 * @author lautturi.com 
 * Java example: create a 5 digits random string in java
 */

import java.util.*;

public class Lautturi {
	
	public static void main(String[] args) {
		String chars = "0123456789";
                ;
		int len = 5;
		
        StringBuilder sb = new StringBuilder(len);
        for (int i = 0; i < len; i++)
            sb.append(chars.charAt(new Random().nextInt(chars.length())));
        String randomString =  sb.toString();
		System.out.println("random string:"+ randomString);
	}
}

output:

random string:59461