₦airaland Forum

Hello All, I am trying to make a simple menu using a do-while loop in java. I have used this source to run the code and its looks like this:

 int choice;
    Scanner scanChoice = new Scanner(System.in);
    do {
        System.out.println("Pick an option. 1 2 or 3.";
        System.out.println("1. Apple";
        System.out.println("2. Pear";
        System.out.println("3. Pineapple";

        choice = scanChoice.nextInt();
    } while (choice < 1 || choice > 3);

    System.out.println("You picked " + choice);

The problem is, every time I try to run it, it throws "java.util.NoSuchElementException". The full error is below:

Exception in thread "main" java.util.NoSuchElementException
at java.util.Scanner.throwFor(Scanner.java:862)
at java.util.Scanner.next(Scanner.java:1485)
at java.util.Scanner.nextInt(Scanner.java:2117)
at java.util.Scanner.nextInt(Scanner.java:2076)
at mainPackage.Main.fruitMenu(Main.java:135)
at mainPackage.Main.main(Main.java:103)

I know that this is because scanChoice.hasNextInt() returns false, but I'm not sure how to fix this. When I add an if statement (if (scanChoice.hasNextInt())), the method scanChoice.hasNextInt() still returns false, so it just passes over the line that initializes the variable choice, and that variable never gets initialized.

Anyone know how to fix this? Any suggestions?

Try this
while ((choice < 1) || (choice > 3));

Arjunkumar09:
suggestions?

Your snippet run normal in my system ooo. Perhaps you should run it a local machine and see.
I tried it using same online compiler too but that site was too clumsy for me. Then I tried with other online compiler (programiz and ideone) and it works.
My thought is that, standard input maybe disabled for the online compiler. Hope the Scanner class was imported in your code?