如何用同一条输入线制作多台扫描仪？

Question

I'm making a terminal game that uses Scanner objects. Up to now, I've had no problems with the way I did things. But now, I want to add "cheat-codes", for that I need a second Scanner . One would be for the specified keywords that the players needs to type in to progress, the other would be for the cheat-codes, and I would make them in two separate Thread s, so they don't interfere.

The problem is, when I do this, the player is expected to type in two lines, since there's two Scanner s, but I want it to only ask for one line, and if that line is a cheat-code, it would do something different, from if it were a specified keyword. Is there any way to do this, without needing to rewrite my code entirely?

This is how I make the Scanner objects:

// show available keywords
System.out.println("[keyword1] [keyword2] [keyword3]\n");
Scanner User = new Scanner(System.in);
String user = User.nextLine();

if (user.contentEquals("keyword1")) {
    // code
}

(and I did the same for the other Thread with the cheat-codes)

I have also tried it with a public static Scanner that I used for both Thread s, then just made a String for the keywords and another for the cheat-codes, but that, for some absurd reason, caused java.lang.IndexOutOfBoundsException to be thrown.

Thanks in advance!

Answer 1

One scanner is enough.

    String input1 = User.next();
    String input2 = User.next();

enter this values separated by space example you entered Hello World . the Hello goes to input1 then the World goes to input2