Issue with arrays and methods (JAVA)

Question

The assignment was to accept an array 'a', pick up alternate values from 'a', store them in reverse order in another array 'b' and print the values of 'b'. I wrote the following code, but the values of 'b' getting printed are all 0.

import java.io.*;
public class Assignment
{
    public int[] array(int[] a)
    {
        int l=a.length;
        int x=l-1;
        int[] b=new int[l];
        for(int i=x;i>=0;i=-2)
        {
            b[x-i]=a[i];
        }
        return b;
     }

    public static void main()throws IOException
    {
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
        Assignment asg=new Assignment();
        System.out.println("How many numbers do you want in the array?");
        int l=Integer.parseInt(br.readLine());
        System.out.println("Enter the numbers");

        int[] a =new int[l];
        for(int i=0;i<l;i++) 
            a[i]=Integer.parseInt(br.readLine());

        int[] b=asg.array(a);
        for(int j=0;j<l;j++) 
            System.out.println(b[j]);
    }
}

Answer 1

After fixing the main method signature change the code to as follows:

try
        {
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
        MainClass asg=new MainClass();
        System.out.println("How many numbers do you want in the array?");
        int l=Integer.parseInt(br.readLine());
        System.out.println("Enter the numbers");
        int[] a =new int[l];
        for(int i=0;i<l;i++) a[i]=Integer.parseInt(br.readLine());
        int[] b=asg.array(a);
        int newSize = 0;
        if(l% 2 == 0)
            newSize = l/2;
        else
            newSize = (l/2) +1;
        for(int j=0;j<newSize;j++) System.out.println(b[j]);
        }
        catch(Exception ex)
    {
        ex.printStackTrace();
    }


public int[] array(int[] a)
        {
            int l=a.length;
            int x=l-1;
            int newSize = 0;
            if(l% 2 == 0)
                newSize = l/2;
            else
                newSize = (l/2) +1;

            int[] b=new int[newSize];
            int i = 0;
            while(x >= 0)
                {
                    b[i]=a[x];
                    i++;
                    x -= 2;
                }

            return b;
         }

The length of b should be half of a and not same as a.