package com.goodfan;

public class ByteArrayToString {

    private static char[] HEX_CHAR = {'0', '1', '2', '3', '4', '5', '6', '7', '8',

        '9', 'a', 'b', 'c', 'd', 'e', 'f'};

    private static String byteArray2String(byte[] data){

        StringBuilder stringBuilder = new StringBuilder();

        for(int i=0; i<data.length; i++){

            stringBuilder.append(HEX_CHAR[(data[i] & 0xf0) >>> 4]);

            stringBuilder.append(HEX_CHAR[(data[i] & 0x0f)]);

            if(i < data.length-1)

                stringBuilder.append(" ");

        }

        return stringBuilder.toString();

    }

    public static void main(String[] args) {

        byte[] data = "hello kitty".getBytes();

        System.out.println(data);

        String byteArray2String = byteArray2String(data);

        System.out.println(byteArray2String);

    }

}