Java Hex Calculate toHexString(byte[] bytes)

Description

Generates a hexadecimal string from an array of bytes.

License

Apache License

Parameter

Parameter	Description
bytes	A Byte array

Return

A String representation

Declaration

public static String toHexString(byte[] bytes) 

Method Source Code

//package com.java2s;
/*//from ww w  .j a  va2s  .  com
 * Copyright (c) 2008-2016 Computer Network Information Center (CNIC), Chinese Academy of Sciences.
 * 
 * This file is part of Duckling project.
 *
 * 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 {
    /**
     *  Generates a hexadecimal string from an array of bytes.  For
     *  example, if the array contains { 0x01, 0x02, 0x3E }, the resulting
     *  string will be "01023E".
     *
     * @param bytes A Byte array
     * @return A String representation
     * @since 2.3.87
     */
    public static String toHexString(byte[] bytes) {
        StringBuffer sb = new StringBuffer(bytes.length * 2);
        for (int i = 0; i < bytes.length; i++) {
            sb.append(toHex(bytes[i] >> 4));
            sb.append(toHex(bytes[i]));
        }

        return sb.toString();
    }

    private static char toHex(int nibble) {
        final char[] hexDigit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
        return hexDigit[nibble & 0xF];
    }
}

Related

1. toHexString(byte[] byteArray, int offset, int size)
2. toHexString(byte[] byteArray, String delim)
3. toHexString(byte[] byteDigest)
4. toHexString(byte[] bytes)
5. toHexString(byte[] bytes)
6. toHexString(byte[] bytes)
7. toHexString(byte[] bytes)
8. toHexString(byte[] bytes)
9. toHexString(byte[] bytes)