未设置字节值上的位

//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;

        int pos = 2;

        System.out.println(unsetBit(b, pos));

    }


    /**

     *

     * @param b

     * @param pos

     * @return

     */

    public static byte unsetBit(byte b, int pos) {

        return (byte) (b & ~(1 << pos));

    }

}