Question

当我尝试使用while循环时，它不会遵循我在while中设置的条件。就像我放while s1 != "n")一样，即使s1 = n，它也会继续。当我尝试使用while s1 == "y")时，情况正好相反，而且非常恼人。我试图制作一个因子计算器，提示用户是否愿意继续前进或停止。

这里是完整的代码：

package factorial;

import java.util.Scanner;

public class Factorial {

    public static void main(String[] args) {
    int factorial = 1;
    int number = 6;
    int i = 1;
    String s1 = "y";

    Scanner keyboard = new Scanner(System.in);

while(s1 != "n") {
    System.out.println("Enter an N:");
    number = keyboard.nextInt();
    while(i <= number) {
        factorial *= i;
        i++;
    }
    System.out.println("Factorial = "+factorial);
    System.out.println("Would you like to continue? (y/n)");
    s1 = keyboard.next();
}
keyboard.close();
System.out.println("Have a nice day!");
}
}

Answer 1

正如@Debabrata所说，对字符串使用equals，替换：

while(s1 != "n") {

带

while(!s1.equals("n")) {

为什么我的while循环条件不起作用？

1 个答案: