Java array swap

/**
 * @author lautturi.com
 * Java example:how to swap elements of array in java
 */
import java.util.*;

public class Lautturi {
	
	public static void swap( int[] arr,int x, int y) {
	  	int temp = arr[x];
	  	arr[x] = arr[y];
	  	arr[y] = temp;
	}

	public static void main(String[] args) {
		int[] arr = {1, 3, 5, 2, 4};
		swap(arr,2,4);
		System.out.println(Arrays.toString(arr));
		
	}
}

output:

[1, 3, 4, 2, 5]