如果它们使用默认值，我试图使我的开关盒再次循环 [英] I am trying to make my switch case loop back again if they get the default

问题描述

    //Choice of choosing a dog or a cat

     String pet = input.next();

    switch (pet.charAt(0)) {
        case 'a' -> {
            System.out.println("What is your dog's name? ");
            String dogsName = input.next();
            System.out.println("Your Character's Name is: " + playerName + "\nYour Pet's Name is: " + dogsName);
        }
        case 'b' -> {
            System.out.println("What is your cat's name? ");
            String catsName = input.next();
            System.out.println("Character Name: " + playerName + "\nPet Name: " + catsName);
        }
        default -> System.out.println("That is not a valid option. Please choose again.");
    }

   input.close();

}

我找不到要使用的循环，它将循环回到情况a，直到用户使用其中一种选择进行回答为止，任何帮助都很棒！谢谢

I can't find a loop to use that would bring it back to case a and repeatedly until the user answers using one of the choices, Any help would be awesome! Thanks

推荐答案

使用 do while 循环是解决此问题的简单方法.

Using do while loop is a simple way to solve it.

我使用了变量 repeat 进行检查，是否需要再次输入?

I used a variable repeat to check, If I need to ask for the input again or not

另外，请注意，现在即使我添加了另一种情况(例如 case'c')，也不需要为我的 do while 循环修改条件

Also, note that now even If I add another case(say case 'c') I don't need to modify condition for my do while loop

boolean repeat;
do {
    String pet = input.next();
    repeat = false;
    switch (pet.charAt(0)) {
        case 'a' -> {
            System.out.println("What is your dog's name? ");
            String dogsName = input.next();
            System.out.println("Your Character's Name is: " + playerName + "\nYour Pet's Name is: " + dogsName);
        }
        case 'b'-> {
            System.out.println("What is your cat's name? ");
            String catsName = input.next();
            System.out.println("Character Name: " + playerName + "\nPet Name: " + catsName);
        }
        default: System.out.println("That is not a valid option. Please choose again.");
        repeat = true;
    }
} while(repeat);
input.close();

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