Java Byte Array Create toByteArray(byte num)

Description

to Byte Array

License

Apache License

Declaration

public static byte[] toByteArray(byte num) 

Method Source Code

//package com.java2s;
/**/*from   w  w w.  j  a v a 2 s.  c  om*/
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 {
    /**
     *
     */
    public static byte[] toByteArray(byte num) {
        return new byte[] { num };
    }

    public static byte[] toByteArray(short num) {
        final byte[] r = new byte[2];
        for (int i = 0; i < 2; i++) {
            r[i] = (byte) (num >>> (8 - i * 8));
        }
        return r;
    }

    public static byte[] toByteArray(int num) {
        final byte[] r = new byte[4];
        for (int i = 0; i < 4; i++) {
            r[i] = (byte) (num >>> (24 - i * 8));
        }
        return r;
    }

    public static byte[] toByteArray(long num) {
        final byte[] r = new byte[8];
        for (int i = 0; i < 8; i++) {
            r[i] = (byte) (num >>> (56 - i * 8));
        }
        return r;
    }
}

Related

1. toByteArray(boolean[] array)
2. toByteArray(boolean[] bits)
3. toByteArray(byte arg, int length)
4. toByteArray(byte b)
5. toByteArray(byte byteArray)
6. toByteArray(byte value)
7. toByteArray(char c)
8. toByteArray(char[] charArray)
9. toByteArray(char[] chars)