测试位运算符bit

测试位运算符
----------------------------

//测试位运算符 << >> >>> & | ^ ~
class TestBit{
    public static void main(String[] args){
        int i1 = 31;
        System.out.println(i1<<3);//248
        System.out.println(i1>>3);//3
        System.out.println(i1>>>3);//3

        int i2 = -31;
        System.out.println(i2>>2);//-8
        System.out.println(i2>>>2);//1073741816

        System.out.println(12 & 5);//4
        System.out.println(12 | 5);//13
        System.out.println(12 ^ 5);//9
        System.out.println(~12);//-13

    }
}