Android Byte Array Equal equals(byte[] array1, byte[] array2, int length)

Description

Checks if the beginnings of two byte arrays are equal.

License

Apache License

Parameter

Parameter	Description
array1	the first byte array
array2	the second byte array
length	the number of bytes to check

Return

true if they're equal, false otherwise

Declaration

public static boolean equals(byte[] array1, byte[] array2, int length) 

Method Source Code

//package com.java2s;
/*//from   w  w w  .j  a va 2s.co  m
 * Copyright (C) 2006 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

public class Main {
    /**
     * Checks if the beginnings of two byte arrays are equal.
     *
     * @param array1 the first byte array
     * @param array2 the second byte array
     * @param length the number of bytes to check
     * @return true if they're equal, false otherwise
     */
    public static boolean equals(byte[] array1, byte[] array2, int length) {
        if (array1 == array2) {
            return true;
        }
        if (array1 == null || array2 == null || array1.length < length
                || array2.length < length) {
            return false;
        }
        for (int i = 0; i < length; i++) {
            if (array1[i] != array2[i]) {
                return false;
            }
        }
        return true;
    }
}

Related

1. constantTimeAreEqual(byte[] a, byte[] b)
2. equals(byte[] array1, byte[] array2)
3. equals(byte[] array1, byte[] array2, int length)
4. equals(byte[] array1, byte[] array2, int length)
5. equals(final byte[] pArrayA, final int pOffsetA, final byte[] pArrayB, final int pOffsetB, final int pLength)
6. equals(final byte[] pArrayA, final int pOffsetA, final byte[] pArrayB, final int pOffsetB, final int pLength)
7. isEqual(byte[] first, byte[] second)