sort a single string in java

/**
 * @author lautturi.com 
 * Java example: how to sort the characters in a string 
 */

import java.util.*;
import java.util.stream.Collectors;

public class Lautturi {
	public static void main(String[] args) {
		String str = "hello lautturi java world!";
		
        char[] chars = str.toCharArray();
        Arrays.sort(chars);
        String sorted = new String(chars);
        
        System.out.println("original:"+str);
		System.out.println("sorted String:"+sorted);
	}
}

output:

original:hello lautturi java world!
sorted String:   !aaadehijlllloorrttuuvw