Scanner和do-while循环问题

Question

我在do-while循环中使用Scanner时遇到以下Java代码的问题。该代码应该计算用户请求的阶乘的值，然后询问用户他/她是否想要计算另一个阶乘。如果他们说是，那么循环再次运行，如果否，则循环退出。

在第一次迭代中，一切都顺利进行。但是，当它询问我是否要计算另一个数字时，虽然我输入＆＃34;是＆＃34;但它不会再次运行。我读了here，添加一个nextLine（）来清除\ n可能会有所帮助，但我似乎无法让它工作 - 任何提示？

import java.util.*;

public class Factorial
{
    public static void main(String[] args)
    {
        Scanner kbscanner = new Scanner(System.in);
        String answer; 
        do
        {
            // get the value from the user
            System.out.print("\nEnter a Number: ");
            int number = kbscanner.nextInt();

            // compute factorial
            int factorial = 1;    
            for (int i = 1; i <= number; i++)
            factorial *= i;

            // display factorial
            System.out.println("The value of " + number + "! is " + factorial);

            // ask if user wants to calculate another factorial
            System.out.print("Would you like to calculate another number? ");
            kbscanner.nextLine();   // gets rid of the \n from when nextInt was asked
            answer = kbscanner.next();
        } while (answer == "Yes");       

        System.out.println("End");
     }
}