1 /*
 2  * Some basic functionalities of array list...
 3  */
 4 package arraylistplay;
 5 
 6 import java.util.ArrayList;
 7 
 8 /**
 9  *
10  * @author evankemp
11  */
12 public class Primes {
13 
14     /**
15      * @param args the command line arguments
16      */
17     public static void main(String[] args) {
18 
19         ArrayList<Integer> primes = new ArrayList<>();
20 
21         primes.add(2);
22         primes.add(3);
23         primes.add(5);
24         primes.add(7);
25 
26         System.out.println("size of primes list = " + primes.size());
27         System.out.println("first prime = " + primes.get(0));
28         System.out.println("last prime = " + primes.get(3));
29         System.out.println("last prime = " + primes.get(primes.size() - 1));
30 
31         System.out.println("\nThe initial list...");
32         for (Integer prime : primes) {
33             System.out.println(prime);
34         }
35 
36         int temp = primes.get(0);
37         primes.set(0, primes.get(primes.size() - 1));
38         primes.set(primes.size() - 1, temp);
39 
40         System.out.println("\nThe final list...");
41         for (Integer prime : primes) {
42             System.out.println(prime);
43         }
44 
45     }
46 
47 }
48