Java Hex Convert To fromHexString(String input)

Description

from Hex String

License

Apache License

Declaration

public static byte[] fromHexString(String input) 

Method Source Code

//package com.java2s;
/**// www.  j a  v a2s  . c o m
 * Copyright 2013-2015 Pierre Merienne
 *
 * 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[] fromHexString(String input) {
        int n = input.length() / 2;
        byte[] output = new byte[n];
        int l = 0;
        for (int k = 0; k < n; k++) {
            char c = input.charAt(l++);
            byte b = (byte) ((c >= 'a' ? (c - 'a' + 10) : (c - '0')) << 4);
            c = input.charAt(l++);
            b |= (byte) (c >= 'a' ? (c - 'a' + 10) : (c - '0'));
            output[k] = b;
        }
        return output;
    }
}

Related

1. fromHexString(String hexString)
2. fromHexString(String hexString)
3. fromHexString(String in)
4. fromHexString(String input)
5. fromHexString(String input)
6. fromHexString(String s)
7. fromHexString(String s)
8. fromHexString(String s)
9. fromHexString(String s)