Java While循环不会循环

Question

package pack;

import java.util.Scanner;

public class Calculator {


    public static void main(String args[]){
        Scanner scan = new Scanner(System.in);
        String cont = "Yes";

        while(cont == "Yes" || cont == "yes" ){
            System.out.print("Enter a Number: ");
            int x = scan.nextInt();
            System.out.print("Enter another Number: ");
            int y = scan.nextInt();

            int diff = x - y;
            int sum = x + y;
            int prod = x * y;
            int quot = x / y;

            System.out.println("The Sum is: " + sum);
            System.out.println("The Diffrence is: " + diff);
            System.out.println("The Product is: " + prod);
            System.out.println("The quotient is: " + quot);

            System.out.print("Enter Yes to Continue: ");
            cont = scan.next();
            System.out.println(cont);

        }

    }



}

整个代码都有效,但while循环不重复.在cont = scan.next();被抓的字符串.输出如下所示:

[

Enter a Number: 5

Enter another Number: 6

The Sum is: 11

The Diffrence is: -1

The Product is: 30

The quotient is: 0

Enter Yes to Continue: Yes

Yes

]

然后程序终止没有任何问题.所有我需要它来重复while循环.谢谢您的帮助!

Answer 1

比较字符串.equals而不是==

while(cont.equals("Yes") || cont.equals("yes") )

甚至更好:

while(cont.equalsIgnoreCase("Yes"))