reverse an array in java using while loop

1int length = array.length;
2		for(int i=0;i<length/2;i++) {
3			int swap = array[i];
4			array[i] = array[length-i-1];
5			array[length-i-1] = swap;
6		}
7or
8Collections.reverse(Arrays.asList(array)); 

1import java.util.Scanner;
2public class Example
3{
4   public static void main(String args[])
5   {
6	int counter, i=0, j=0, temp;
7	int number[] = new int[100];
8	Scanner scanner = new Scanner(System.in);
9	System.out.print("How many elements you want to enter: ");
10	counter = scanner.nextInt();
11
12	/* This loop stores all the elements that we enter in an 
13	 * the array number. First element is at number[0], second at 
14	 * number[1] and so on
15	 */
16	for(i=0; i<counter; i++)
17	{
18	    System.out.print("Enter Array Element"+(i+1)+": ");
19	    number[i] = scanner.nextInt();
20	}
21
22	/* Here we are writing the logic to swap first element with
23	 * last element, second last element with second element and
24	 * so on. On the first iteration of while loop i is the index 
25	 * of first element and j is the index of last. On the second
26	 * iteration i is the index of second and j is the index of 
27	 * second last.
28	 */
29	j = i - 1;     
30	i = 0;         
31	scanner.close();
32	while(i<j)
33	{
34  	   temp = number[i];
35	   number[i] = number[j];
36	   number[j] = temp;
37	   i++;
38	   j--;
39	}
40
41	System.out.print("Reversed array: ");
42	for(i=0; i<counter; i++)
43	{
44	   System.out.print(number[i]+ "  ");
45	}       
46   }
47}