1 /*
 2  * A program to demonstrate an array
 3  */
 4 package arrayplay;
 5 
 6 /**
 7  *
 8  * @author mbilodea
 9  */
10 public class Primes {
11 
12     /**
13      * @param args the command line arguments
14      */
15     public static void main(String[] args) {
16         
17         int[] primes = new int[4];
18         
19         primes[0] = 2;
20         primes[1] = 3;
21         primes[2] = 5;
22         primes[3] = 7;
23         
24         System.out.println("legnth of primes array = " + primes.length);
25         System.out.println("first prime = " + primes[0]);
26         System.out.println("last prime = " + primes[3]);
27         System.out.println("last prime = " + primes[primes.length-1]);
28         
29         System.out.println("\nThe initial array ...");
30         int i = 0;
31         while ( i < primes.length ) {
32             System.out.println(primes[i]);
33             i = i + 1;
34             
35         }
36         
37         int temp = primes[0];
38         primes[0] = primes[primes.length-1];
39         primes[primes.length-1] = temp;
40         
41         System.out.println("\nThe final array ...");
42         for ( int x = 0; x < primes.length; x = x + 1 ) {
43             System.out.println(primes[x]);
44         }
45     }
46 }