JAVA语法——不用乘法运算符计算2X16

package 不用乘法运算符实现2X16;

import java.util.Scanner;

public class 不用乘法运算符实现2X16 {
    public static void main(String[] args)
    {
        Scanner scan = new Scanner(System.in);
        System.out.println("请输入一个整数");
        
        long number = scan.nextLong();
        
        System.out.println("你输入的数字是"+number);
        System.out.println("该数字乘以2的运算结果为"+(number << 1));
        System.out.println("该数字乘以4的运算结果为"+(number << 2));
        System.out.println("该数字乘以8的运算结果为"+(number << 3));
        System.out.println("该数字乘以16的运算结果为"+(number << 4));
    }
}