Reference

public class Main {

    public static void main(String args[]) {
        int[] a = new int[10];
        int[] b = null;

        for(int i=0; i < a.length; i++)
            a[i] = i;

        b = a;

        System.out.println("Before setting to a5 to 999, b5 = "+b[5]);
        a[5] = 999;
        System.out.println("After setting to a5 to 999, b5 = "+b[5]);

    }

}