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 void toBytes(int value, byte[] dest, int destPos) {
        for (int i = 0; i < 4; i++) {
            dest[i + destPos] = (byte) (value >> ((7 - i) * 8));
        }
    }

    public static byte[] toBytes(int value) {
        byte[] dest = new byte[4];
        toBytes(value, dest, 0);
        return dest;
    }

    public static void toBytes(long value, byte[] dest, int destPos) {
        for (int i = 0; i < 8; i++) {
            dest[i + destPos] = (byte) (value >> ((7 - i) * 8));
        }
    }

    public static byte[] toBytes(long value) {
        byte[] dest = new byte[8];
        toBytes(value, dest, 0);
        return dest;
    }

    public static byte[] toBytes(String digits, int radix) throws IllegalArgumentException {
        if (digits == null) {
            return null;
        }
        if (radix != 16 && radix != 10 && radix != 8) {
            throw new IllegalArgumentException("For input radix: \"" + radix + "\"");
        }
        int divLen = (radix == 16) ? 2 : 3;
        int length = digits.length();
        if (length % divLen == 1) {
            throw new IllegalArgumentException("For input string: \"" + digits + "\"");
        }
        length = length / divLen;
        byte[] bytes = new byte[length];
        for (int i = 0; i < length; i++) {
            int index = i * divLen;
            bytes[i] = (byte) (Short.parseShort(digits.substring(index, index + divLen), radix));
        }
        return bytes;
    }
}