Java how to remove duplicate elements in array

/**
 * @author lautturi.com 
 * Java example: Java how to delete duplicates in array 
 */

import java.util.*;
import java.io.File;

public class Lautturi {

	public static void main(String[] args) {
		
		int[] numbers = { 11,4,12,7,55,8,12,8,13,55,12,7 };
		int[] unique = Arrays.stream(numbers).distinct().toArray();
		
		System.out.println(Arrays.toString(numbers));
		System.out.println(Arrays.toString(unique));
	}
}

output:

[11, 4, 12, 7, 55, 8, 12, 8, 13, 55, 12, 7]
[11, 4, 12, 7, 55, 8, 13]