Question

如果我错了，很抱歉，我已经环顾四周，并没有找到任何直接回答我问题的问题。我正在写一个应该记录你的出生信息的程序，年，月，日，时，分，然后问他们是否愿意再做一次，但是使用方法和循环直到Y / N为止输入

我的问题是我无法让方法接受Y / N并结束程序，以及在输入N时结束。

我认为有一段时间或某种循环需要在方法中，但我很难搞清楚。

我的所有其他方法除了这个之外都有效，感谢任何帮助，谢谢。

这是我现在的方法代码：

public static boolean getYNConfirm(Scanner pipe, String prompt)
{

  String choice="";

  System.out.println(prompt);

        choice = pipe.nextLine();

        if(choice.equalsIgnoreCase("Y"))
        {
           return true;
        }
        else
        {
            return false;    
        }


}

这是我主程序的代码：

public static void main(String[] args) 
{
    int year, month, day, hour, minutes;
    String msg="";
    boolean done = false;
    Scanner in = new Scanner(System.in);

   while(!done)
   {

   year = SafeInput.getIntInRange(in, "Enter the year you were born: ", 1965, 2000);

   month = SafeInput.getIntInRange(in, "Enter your month of birth: ", 1, 12);
   switch (month)
   {
      case 1:
      msg = "January";
      break;  
      case 2:
      msg = "February";
      break;
      case 3:
      msg = "March";
      break;
      case 4:
      msg = "April";
      break;
      case 5:
      msg = "May";
      break;
      case 6:
      msg = "June";
      break;
      case 7:
      msg = "July";
      break;
      case 8:
      msg = "August";
      break;
      case 9:
      msg = "Septemeber";
      break;
      case 10:
      msg = "October";
      break;
      case 11:
      msg = "November";
      break;
      case 12:
      msg = "December";
      break;         
   }

   hour = SafeInput.getIntInRange(in, "Enter the hour you were born in: ", 1, 24);
   minutes = SafeInput.getIntInRange(in, "Enter the minutes you were born: ", 1, 59);

   System.out.println("You were born: " + year + " , " + msg + " , " + hour + " hr. " + minutes + " mins. ");


   SafeInput.getYNConfirm(in, "Would you like to play again?");

   }
}

}

感谢您的帮助。

Answer 1

done的值始终为false。最后一行改变：

done = SafeInput.getYNConfirm(in, "Would you like to play again?");

编辑：

如果您返回true，您的逻辑也不合适：

if(choice.equalsIgnoreCase("Y"))
        {
           return false;
        }
        else
        {
            return true;    
        }

Answer 2

你需要在getYNConfirm方法的返回时更改done base的值。所以最后一行应该是

done = SafeInput.getYNConfirm(in, "Would you like to play again?");

Java - 循环直到输入Y或N的方法

2 个答案: