将字节转换为长度为8的字符串，由0和1组成，这些0和1对应于字节的二进制表示形式

/*
 from n o w j a v a . c o m 
*/


//package com.nowjava;


public class Main {

    public static void main(String[] argv) throws Exception {

        byte b = 2;

        System.out.println(bitStringFromByte(b));

    }


    /**

     * Converts a byte into a String of length 8, consisting of 0s and 1s that

     * corresponds to the binary representation of the byte

     *

     * @param b byte to convert

     * @return String of 0's and 1's that is the binary representation of b

     */

    public static String bitStringFromByte(byte b) {

        String tail = Integer.toBinaryString(b & 0xFF).replace(' ', '0');

        int tailLen = tail.length();