按位操作符 & | ^ ~

 按位與&: 只要對應的二個二進位都為1時，結果位就為1

按位或|:只要對應的二個二進位有一個為1時，結果位就為1

按位異或^:0⊕0=0，1⊕0=1，0⊕1=1，1⊕1=0（同為0，異為1）

按位非:取反操作符 

//: object/Bit.java

package object;
import static net.util.Print.*;


public class Bit{
    public static void main(String[] args){
        int n1=3;
        int n2=4;
        print("n1 = " + Integer.toBinaryString(n1));
        print("n2 = " + Integer.toBinaryString(n2));
        print("n1&n2 = " + Integer.toBinaryString(n1&n2));//按位與
        print("n1|n2 = " + Integer.toBinaryString(n1|n2));//按位或
        print("n1^n2 = " + Integer.toBinaryString(n1^n2));//按位異或
        print("~n2 = " + Integer.toBinaryString(~n2));//按位非
    }
}/* output:
n1 = 11
n2 = 100
n1&n2 = 0
n1|n2 = 111
n1^n2 = 111
~n2 = 11111111111111111111111111111011
*///~