在循环满足2个条件之一时执行

Question

我正在尝试使用一个do while循环来找出用户是想将一只狗还是一只猫检查到Java的养狗系统中。其思想是，当提示时输入“dog”或“cat”，任何输入都将导致错误，并且他们将再次被提示输入文件名。

如果输入了“cat”或“dog”，那么将为程序分配等效的文件（dogs.txt或cats.txt)，然后系统将运行并将数据加载到程序中。

以下是当前的变量：

private String filename; // holds the name of the file
private Kennel kennel; // holds the kennel
private Scanner scan; // so we can read from keyboard
private String tempFileName;
private String dogsFile = "dogs.txt";
private String catsFile = "cats.txt";

以及导致问题的方法：

private KennelDemo() {
    scan = new Scanner(System.in);

    boolean fileNotCorrect = false;

    System.out.print("Which animal are you looking to check into the kennel?: " + "\n");
    System.out.println("Dog");
    System.out.println("Cat");  
    tempFileName = scan.next();

    do {
        tempFileName.equals("dog");
        filename = dogsFile;
        fileNotCorrect = true;

        /*tempFileName.equals("cat");
        filename = catsFile;
        fileNotCorrect = true;*/
    }
        while(fileNotCorrect = false);
        System.out.println("That is not a valid filename, please enter either 'dog' or 'cat' in lowercase.");

下面是运行代码时打印的内容：

**********HELLO***********
Which animal are you looking to check into the kennel?: 
Dog
Cat
cat
That is not a valid filename, please enter either 'dog' or 'cat' in lowercase.
Using file dogs.txt

它将一个文件分配给程序，而不管输入了什么，然后继续加载程序。

我试过使用catch{但由于某种原因它不起作用，有人能提供帮助吗？

谢谢！

Answer 1

这不是怎么做的，而正在工作。你连检查都没有。

使用此：

 do {
    System.out.print("Which animal are you looking to check into the kennel?: " + "\n");
    System.out.println("Dog");
    System.out.println("Cat");  
    tempFileName = scan.next();
    if(tempFileName.equals("dog") || tempFileName.equals("cat"))
    { 
       filename = tempFileName.equals("dog") ? dogsFile : catsFile;
       fileNotCorrect = true;
    }else{
      System.out.println("That is not a valid filename, please enter either 'dog' or 'cat' in lowercase.");
    }
}
    while(!fileNotCorrect);