Java Convert via ByteBuffer longTo4ByteArray(long n)

Description

long To Byte Array

License

Apache License

Declaration

static byte[] longTo4ByteArray(long n) 

Method Source Code

//package com.java2s;
/**/*  ww  w.j  a v a 2 s  . c om*/
 * Copyright 2013 Matija Mazi.
 *
 * 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.
 */

import java.nio.ByteBuffer;
import java.util.Arrays;

public class Main {
    static byte[] longTo4ByteArray(long n) {
        byte[] bytes = Arrays.copyOfRange(ByteBuffer.allocate(8).putLong(n).array(), 4, 8);
        assert bytes.length == 4 : bytes.length;
        return bytes;
    }
}

Related

1. intToBytesLE(int value)
2. intToBytesWithLen(int x, int len)
3. long2bytes(long num)
4. longFromBytes(byte[] array)
5. longFromBytes(byte[] value)
6. longToByteArray(long l)
7. longToByteArray(long value)
8. longToByteArray(long value)
9. longToByteArray(long[] array)