sort array in java

/**
 * @author lautturi.com 
 * Java example: how to sort an array in java
 */

import java.util.*;

public class Lautturi {
	public static void main(String[] args) {
		int[] numbers = { 11, 4, 12, 7, 55, 8, 12, 8, 13, 55, 12, 7 };
		System.out.println("array:" + Arrays.toString(numbers));
		Arrays.sort(numbers);
		System.out.println("sorted array:" + Arrays.toString(numbers));
	}
}

output:

array:[11, 4, 12, 7, 55, 8, 12, 8, 13, 55, 12, 7]
sorted array:[4, 7, 7, 8, 8, 11, 12, 12, 12, 13, 55, 55]