Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright 2002-2009 Team Jaru.
 * 
 * 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[] toBytesFromHexString(String digits) throws IllegalArgumentException {
        if (digits == null) {
            return null;
        }
        int length = digits.length();
        if (length % 2 == 1) {
            throw new IllegalArgumentException("For input string: \"" + digits + "\"");
        }
        length = length / 2;
        byte[] bytes = new byte[length];
        for (int i = 0; i < length; i++) {
            int index = i * 2;
            bytes[i] = (byte) (Short.parseShort(digits.substring(index, index + 2), 16));
        }
        return bytes;
    }
}