Java Program to reverse the Array.

import java.util.Scanner;
public class Example
{
   public static void main(String args[])
   {
 int counter, i=0, j=0, temp;
 int number[] = new int[100];
 Scanner scanner = new Scanner(System.in);
 System.out.print("How many elements you want to enter: ");
 counter = scanner.nextInt();

 /* This loop stores all the elements that we enter in an 
  * the array number. First element is at number[0], second at 
  * number[1] and so on
  */
 for(i=0; i<counter; i++)
 {
     System.out.print("Enter Array Element"+(i+1)+": ");
     number[i] = scanner.nextInt();
 }

 /* Here we are writing the logic to swap first element with
  * last element, second last element with second element and
  * so on. On the first iteration of while loop i is the index 
  * of first element and j is the index of last. On the second
  * iteration i is the index of second and j is the index of 
  * second last.
  */
 j = i - 1;     
 i = 0;         
 scanner.close();
 while(i<j)
 {
      temp = number[i];
    number[i] = number[j];
    number[j] = temp;
    i++;
    j--;
 }

 System.out.print("Reversed array: ");
 for(i=0; i<counter; i++)
 {
    System.out.print(number[i]+ "  ");
 }       
   }
}