Bubble Sort Algorithm in java

/**

 *  How to implement Bubble sort algorithm

 */

package com.cfed.algorithms;

/**

 * @author Konzern

 * 

 * The complexity is n square

 *

 */

public class BubbleSortAlgorithm {

/**

* @param args

*/

public static void main(String[] args) {

int[] arr = { 4, 5, 7, 1 };

int len = arr.length;

for (int j = 0; j < len - 1; j++) {

for (int i = 0; i < len - 1; i++) {

if (arr[i] > arr[i + 1]) {

int temp = arr[i + 1];

arr[i + 1] = arr[i];

arr[i] = temp;

}

}

}

for (int i = 0; i < len; i++) {

System.out.print(arr[i] + " ");

}

}

}