1    /* 
2    * This program will process the ArrayList 
3     */
4    
5    
6    package arraylistplay;
7    
8    import java.util.ArrayList;
9    
10   public class Primes {
11       public  static void main(String[]args){
12           ArrayList<Integer>primes= new ArrayList<>();
13   
14           primes.add(2);
15           primes.add(3);
16           primes.add(5);
17           primes.add(7);
18   
19           System.out.println("size of primes list="+primes.size());
20           System.out.println("first primes="+ primes.get(0));
21           System.out.println("last prime="+ primes.get(3));
22           System.out.println("last prime=" +primes.get(primes.size()-1));
23   
24   
25   
26           System.out.println("\nThe initial list...");
27           for (Integer prime: primes){
28               System.out.println(prime);
29           }
30           int temp= primes.get(0);
31           primes.set(0, primes.get(primes.size()-1));// this sets up the last element to be in the first list
32           primes.set(primes.size()-1, temp);// this brings the last element to the temp to print as prime(0)
33   
34           System.out.println("\nThe final list....");
35           for (Integer prime: primes){
36               System.out.println(prime);
37           }
38   
39   
40       }
41       }
42   
43   
44