How to Create a Bubble sort in Java

1 package com.techieprogrammer;
2 
3 import java.util.ArrayList;
4 import java.util.Arrays;
5 import java.util.Iterator;
6 import java.util.List;
7 
8 class BubbleSortCompute {
9     static List <Integer> intList = new ArrayList <Integer>();
10     
11     public static void add(List <Integer> temp) {
12         intList.clear();
13         Iterator<Integer> ptr  = temp.iterator();
14         while(ptr.hasNext()) {
15             intList.add(ptr.next());
16         }
17     }
18     
19     public static void sort() {
20         System.out.println("Before Bubble Sort:");
21         Iterator<Integer> ptr  = intList.iterator();
22         while(ptr.hasNext()) {
23             System.out.print(ptr.next()+" ");
24         }
25         System.out.println("\n\nAfter Bubble Sort:");
26         compute();
27         ptr  = intList.iterator();
28         while(ptr.hasNext()) {
29             System.out.print(ptr.next()+" ");
30         }
31     }
32     
33     private static void compute() {
34         int temp;
35         int intListSize = intList.size();
36         for(int outerCounter = 0;outerCounter < intListSize; outerCounter++) {
37             for(int interCounter = 0;interCounter < intListSize - outerCounter - 1; interCounter++) {
38                 if(intList.get(interCounter) >= intList.get(interCounter+1)) {
39                     temp  = intList.get(interCounter+1);
40                     intList.set(interCounter+1, intList.get(interCounter));
41                     intList.set(interCounter, temp);
42                 }
43             }
44         }    
45     }
46 }
47 
48 public class BubbleSort {
49     //Entry Point
50     public static void main(String[] args) {
51         List <Integer> intList = new ArrayList <Integer>(Arrays.asList(50,2,5,78,90,20,4,6,98,1));
52         BubbleSortCompute.add(intList);
53         BubbleSortCompute.sort();
54     }
55 }