Java Hex Calculate toHexString(byte b)

Description

Convert a byte into Hex string

License

Apache License

Parameter

Parameter	Description
b	the byte to be converted

Declaration

public static String toHexString(byte b) 

Method Source Code

//package com.java2s;
/*/*from  www .j  av  a2  s .  c o m*/
 * Copyright 2004 Senunkan Shinryuu
 *
 * 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 {
    /**
     * Convert a byte into Hex string
     * @param b the byte to be converted
     */
    public static String toHexString(byte b) {
        String s = Integer.toHexString(b);
        s = s.toUpperCase();
        StringBuffer sb = new StringBuffer();
        int len = s.length();
        if (len == 1) {
            sb.append("0").append(s);
        } else if (len == 2) {
            sb.append(s);
        } else if (len > 2 && s.startsWith("F")) {
            sb.append(s.substring(len - 2, len));
        } else {
            sb.append("NA");
        }
        return sb.toString();
    }

    /**
     * Convert a byte array into hex string 
     */
    public static String toHexString(byte[] b) {
        if (b == null || b.length == 0) {
            return "";
        }
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < b.length; i++) {
            sb.append(toHexString(b[i]));
        }
        return sb.toString();
    }
}

Related

1. toHexString(byte b)
2. toHexString(byte b)
3. toHexString(byte b)
4. toHexString(byte b)
5. toHexString(byte b)
6. toHexString(byte b)
7. toHexString(byte b)
8. toHexString(byte b)
9. toHexString(byte b)