位运算符

<< 左移运算符（一个整数左移n位，相当于整数乘以2的n次方） ；
>> 右移运算符

        Scanner scanner4 = new Scanner(System.in);
        System.out.println("请输入一个整数:");
        long number1 = scanner4.nextLong();
        System.out.println("你输入的数字是：" + number1);
        System.out.println("该数字乘以2的运算结果是：" + (number1 << 1));
        System.out.println("该数字乘以4的运算结果是：" + (number1 << 2));
        System.out.println("该数字乘以8的运算结果是:" + (number1 << 3));
        System.out.println("该数字乘以16的运算结果是:" + (number1 << 4));

 实现两个数大小交换（经典）：

        Scanner scanner5 = new Scanner(System.in);
        System.out.println("请输入变量A的值");
        long A = scanner5.nextLong();
        System.out.println("请输入变量B的值");
        long B = scanner5.nextLong();
        System.out.println("A=" + A + "	B=" + B);
        System.out.println("执行变量互换...");
        A = A ^ B;
        B = B ^ A;
        A = A ^ B;
        System.out.println("A=" + A + "	B=" + B);