Java Hour getHexString(byte[] raw)

Description

Converts each byte of the given byte array to a HEX value and returns the concatenation of these values

License

Apache License

Parameter

Parameter	Description
raw	the bytes to convert to String using numbers in hexadecimal

Exception

Parameter	Description
RuntimeException	an exception

Return

the encoded string

Declaration

public static String getHexString(byte[] raw) throws RuntimeException 

Method Source Code

//package com.java2s;
/*/* w w w  . ja v a  2 s.  c om*/
 * Copyright 2013 Robert von Burg <eitch@eitchnet.ch>
 * 
 * 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.
 */

import java.io.UnsupportedEncodingException;

import java.text.MessageFormat;

public class Main {
    /**
     * Hex char table for fast calculating of hex values
     */
    private static final byte[] HEX_CHAR_TABLE = { (byte) '0', (byte) '1', (byte) '2', (byte) '3', (byte) '4',
            (byte) '5', (byte) '6', (byte) '7', (byte) '8', (byte) '9', (byte) 'a', (byte) 'b', (byte) 'c',
            (byte) 'd', (byte) 'e', (byte) 'f' };

    /**
     * Converts each byte of the given byte array to a HEX value and returns the concatenation of these values
     * 
     * @param raw
     *            the bytes to convert to String using numbers in hexadecimal
     * 
     * @return the encoded string
     * 
     * @throws RuntimeException
     */
    public static String getHexString(byte[] raw) throws RuntimeException {
        try {
            byte[] hex = new byte[2 * raw.length];
            int index = 0;

            for (byte b : raw) {
                int v = b & 0xFF;
                hex[index++] = HEX_CHAR_TABLE[v >>> 4];
                hex[index++] = HEX_CHAR_TABLE[v & 0xF];
            }

            return new String(hex, "ASCII"); //$NON-NLS-1$

        } catch (UnsupportedEncodingException e) {
            String msg = MessageFormat.format("Something went wrong while converting to HEX: {0}", e.getMessage()); //$NON-NLS-1$
            throw new RuntimeException(msg, e);
        }
    }
}

Related

1. getCurrentHours()
2. getCurrHour()
3. getDelay(int hour, int min)
4. getDelayToNextHour(int amount, boolean skipNext)
5. getGMTHour(int localHour)
6. getHour()
7. getHour()
8. getHour()
9. getHour()