Java Byte Array Create toBytes(String hex)

Description

to Bytes

License

Apache License

Declaration

public static byte[] toBytes(String hex) 

Method Source Code

//package com.java2s;
/*//from w ww  .java 2 s  .c  om
 * Copyright (c) 2008-2016 Computer Network Information Center (CNIC), Chinese Academy of Sciences.
 * 
 * This file is part of Duckling 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 {
    public static byte[] toBytes(String hex) {
        if (hex == null || hex.length() == 0 || hex.length() % 2 == 1)
            return null;

        int byteCount = hex.length() / 2;
        byte[] bytes = new byte[byteCount];
        for (int i = 0; i < byteCount; i++) {
            int beginIndex = i * 2;
            bytes[i] = (byte) Integer.parseInt(hex.substring(beginIndex, beginIndex + 2), 16);
        }
        return bytes;
    }
}

Related

1. toBytes(short value)
2. toBytes(String hex)
3. toBytes(String hex)
4. toBytes(String hex)
5. toBytes(String hex)
6. toBytes(String hex)
7. toBytes(String hexStr)
8. toBytes(String hexStr)
9. toBytes(String hexString)