简单的java AI响应程序？

Question

嗨，我有个节目：

import java.util.Scanner;

public class HowAreYou {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String input;

        System.out.println("How are you?");
        input = in.nextLine();
        if (input.equals("I'm doing good!")) {
            System.out.print("That's great to hear!");
        } else if (input.equals("I'm not doing too well...")) {
            System.out.print("Aw I'm sorry to hear that");
        } else {
            System.out.print("Sorry I didn't catch that are you doing good or bad?");
            input = in.nextLine();
            if (input.equals("good")) {
                System.out.print("That's great to hear!");
            } else if (input.equals("bad")) {
                System.out.print("Aw I'm sorry to hear that");
            }
        }

    }
}

它对前两个响应很好，如果您输入了其他内容，它会打印“对不起，我没注意到，您做得好还是坏？”正确，但我希望它在打印后再次得到响应。这时，它说：“对不起，我没听清楚，你做得好还是坏？”它不允许你输入任何其他东西。

Answer 1

我认为您面临的问题是，在"Sorry I didn't catch that are you doing good or bad?"消息之后，您点击enter key来给出响应，您的程序就会终止。之所以会发生这种情况，是因为input.nextLine消耗了它，并且它与任何东西都不匹配，并且程序退出。

你应该换掉

System.out.print("Sorry I didn't catch that are you doing good or bad?");

使用

System.out.println("Sorry I didn't catch that are you doing good or bad?");

以便在实际输入之前到达下一行。希望这能有所帮助。

Answer 2

只要使用无限循环即可。就像这样

while(true){

  // your code here...

  if(input.equals("exit")) break; 

}

这是最简单的解决办法。

Answer 3

您可以通过添加一个while循环来完成这一任务。

import java.util.Scanner;

public class HowAreYou {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String input;

        /* loop which keeps asking for input  ends when user enters Bye Bye*/
        while(true){ 

        System.out.println("How are you?");
        input = in.nextLine();
        if (input.equals("I'm doing good!")) {
            System.out.println("That's great to hear!");
            break;
        } else if (input.equals("I'm not doing too well...")) {
            System.out.println("Aw I'm sorry to hear that");
            break;
        } else if (input.equals("Bye Bye")) {
            System.out.println("Bye Bye");
            break;
        } else {
            System.out.println("Sorry I didn't catch that are you doing good or bad?");
        }
      }
    }
}