Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.
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 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common
 * Development and Distribution License("CDDL") (collectively, the
 * "License"). You may not use this file except in compliance with the
 * License. You can obtain a copy of the License at
 * http://www.netbeans.org/cddl-gplv2.html
 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
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 * The Original Software is NetBeans. The Initial Developer of the Original
 * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
 * Microsystems, Inc. All Rights Reserved.
 *
 * If you wish your version of this file to be governed by only the CDDL
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 * "[Contributor] elects to include this software in this distribution
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 * However, if you add GPL Version 2 code and therefore, elected the GPL
 * Version 2 license, then the option applies only if the new code is
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 */

import java.io.IOException;

public class Main {
    /**
     * Decodes data encoded using {@link #toHex(byte[],int,int) toHex}.
     *
     * @param hex   data to be converted
     * @param start offset
     * @param len   count
     * @return the converted data
     *
     * @throws IOException if input does not represent hex encoded value
     *
     * @since 1.29
     */
    public static byte[] fromHex(char[] hex, int start, int len) throws IOException {
        if (hex == null) {
            throw new IOException("null");
        }

        int i = hex.length;

        if ((i % 2) != 0) {
            throw new IOException("odd length");
        }

        byte[] magic = new byte[i / 2];

        for (; i > 0; i -= 2) {
            String g = new String(hex, i - 2, 2);

            try {
                magic[(i / 2) - 1] = (byte) Integer.parseInt(g, 16);
            } catch (NumberFormatException ex) {
                throw new IOException(ex.getLocalizedMessage());
            }
        }

        return magic;
    }
}