How to merge arrays in java

/**
 * @author lautturi.com
 * Java example: java merge two arrays using Apache Commons Lang library.
 */

import java.util.*;
import org.apache.commons.lang3.ArrayUtils; // using Apache Commons Lang library.

public class Lautturi {
	public static void main(String[] args) {
		
		int[] arr1 = {1, 3, 5, 2, 4};
		int[] arr2 = { 1,4,2,7,5,16,12,8,13,28 };
		int[] both = ArrayUtils.addAll(arr1, arr2);
		
		System.out.println("new array:"+Arrays.toString(both));     
		
	}
}

output:

new array:[1, 3, 5, 2, 4, 1, 4, 2, 7, 5, 16, 12, 8, 13, 28]