Java Hex Calculate toHex(byte[] bytes, int maxlen)

Description

Converts a byte array to a (Oracle & SQL Server) hex string.

License

Apache License

Parameter

Parameter	Description
maxlen	maximum count of bytes to convert (for database column size restrictions).

Declaration

public static String toHex(byte[] bytes, int maxlen) 

Method Source Code

//package com.java2s;
/**//from   ww  w.  j a  v  a2s  . c om
 *  Copyright 2009 Welocalize, Inc. 
 *  
 *  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 {
    final private static char[] s_digits = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D',
            'E', 'F' };

    /**
     * Converts a byte array to a (Oracle & SQL Server) hex string.
     * 
     * @param maxlen
     *            maximum count of bytes to convert (for database column size
     *            restrictions).
     */
    public static String toHex(byte[] bytes, int maxlen) {
        int len = bytes.length;

        if (maxlen > 0) {
            len = Math.min(bytes.length, maxlen);
        }

        StringBuffer result = new StringBuffer(len * 2);

        for (int i = 0; i < len; ++i) {
            byte b = bytes[i];
            result.append(s_digits[(b & 0xf0) >>> 4]);
            result.append(s_digits[b & 0x0f]);
        }

        return result.toString();
    }
}

Related

1. toHex(byte[] bytes)
2. toHex(byte[] bytes)
3. toHex(byte[] bytes)
4. toHex(byte[] bytes)
5. toHex(byte[] bytes)
6. toHex(byte[] data)
7. toHex(byte[] data)
8. toHex(byte[] data)
9. toHex(byte[] data)