java - 如何使用或||…比较字符串

//我需要在用户键入y OR n。时打破while循环，但是到目前为止，我只能用一个字母/字符串来获取它。

Scanner user_input = new Scanner(System.in);
String name = user_input.next();
System.out.print("Would you like to order some coffee, "+name+"? (y/n)");
String coffeeYorN = user_input.next();

  while (!coffeeYorN.equals("y")||!coffeeYorN.equals"n")  //HERE IS MY ISSUE
  {
    System.out.println("Invalid response, try again.");
    System.out.print("Would you like to order some coffee, "+name+"? (y/n)");
     coffeeYorN = user_input.next();
  }

最佳答案

当条件为真时，执行此循环。

假设有人输入“ n” ...

您的条件说：

Is the input something other than "y"? Yes, it is "n", so I should execute the loop.

您需要这样的内容：while(!coffeeYorN.equals("y") && !coffeeYorN.equals("n"))