Java Array Deep Equal deepEquals(Object[] a1, Object[] a2)

Description

Copied from Arrays.deepEquals.

License

LGPL

Declaration

private static boolean deepEquals(Object[] a1, Object[] a2) 

Method Source Code

//package com.java2s;
// Metawidget (licensed under LGPL)

public class Main {
    /**/*from  w  ww . j a  va 2 s  .  c  om*/
     * Copied from <code>Arrays.deepEquals</code>. <code>Arrays.deepEquals</code> not supported by
     * GWT 1.7.
     */

    private static boolean deepEquals(Object[] a1, Object[] a2) {

        if (a1 == a2) {
            return true;
        }
        if (a1 == null || a2 == null) {
            return false;
        }
        int length = a1.length;
        if (a2.length != length) {
            return false;
        }

        for (int i = 0; i < length; i++) {
            Object e1 = a1[i];
            Object e2 = a2[i];

            if (e1 == e2) {
                continue;
            }
            if (e1 == null) {
                return false;
            }

            // Figure out whether the two elements are equal
            boolean eq;
            if (e1 instanceof Object[] && e2 instanceof Object[]) {
                eq = deepEquals((Object[]) e1, (Object[]) e2);
            } else {
                eq = e1.equals(e2);
            }

            if (!eq) {
                return false;
            }
        }
        return true;
    }
}

Related

1. deepEquals(boolean[] array1, boolean[] array2)
2. deepEquals(Object[] a1, Object[] a2)
3. deepEquals(Object[] a1, Object[] a2)