Java Byte to Hex String byteToHexStr(byte src, int len, int code)

Description

byte To Hex Str

License

Apache License

Declaration

public static String byteToHexStr(byte src, int len, int code) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

public class Main {

    public static String byteToHexStr(byte src, int len, int code) {
        return longToHexStr(src, len, code);
    }/*from   w  w w  .  ja  v a  2s .co  m*/

    public static String longToHexStr(long src, int len, int code) {
        String HexStr = null;
        if (code == 0) {
            HexStr = asciiToHexStr(String.format("%d", src));
            int llen = len - HexStr.length();
            HexStr = fillString(HexStr, 0, llen, (byte) 30);
        } else if (code == 1) {
            byte[] tmp = new byte[16];
            StringBuilder sBuilder = new StringBuilder();
            for (int i = 0; i < 16; i++) {
                tmp[i] = (byte) (src >> 4 * (16 - i - 1) & 0xf);
                sBuilder.append(String.format("%X", tmp[i]));
            }
            HexStr = sBuilder.toString();
            int llen = len - HexStr.length();
            HexStr = fillString(HexStr, 0, llen, (byte) 0);
        } else {
            throw new RuntimeException("code type is not support");
        }
        return HexStr.substring(0, len);
    }

    public static String asciiToHexStr(String src) {
        StringBuilder sBuilder = new StringBuilder();
        for (int i = 0; i < src.length(); i++)
            sBuilder.append(String.format("%02X", Integer.valueOf(src.charAt(i))));
        return sBuilder.toString();
    }

    private static String fillString(String src, int direct, int len, byte fill) {
        if (len <= 0)
            return src;
        for (int i = 0; i < len; i += String.valueOf(fill).length()) {
            //left
            if (direct == 0) {
                src = String.valueOf(fill) + src;
            }
            //right
            else {
                src += String.valueOf(fill);
            }
        }
        return src;
    }
}

Related

1. byteToHexStr(byte b)
2. byteToHexStr(byte b)
3. byteToHexStr(byte buf[])
4. byteToHexstr(byte[] b, boolean space)
5. byteToHexStr(byte[] bArray)
6. byteToHexString(byte _b)
7. byteToHexString(byte b)