Scanner - java.util.NoSuchElementException

Question

Does anyone see a problem with this? First input works fine, but after the first loop, it doesn't ask to enter a value again. How do I fix this?

    int value;
    while(true)
    {
        Scanner scan = new Scanner(System.in);
        System.out.println("Enter a value");
        try 
        {
            value = scan.nextInt();
            System.out.println("value provided is: " + value);
            scan.nextLine(); // consumes "\n" character in buffer
        }
        catch(InputMismatchException e) // outputs error message if value provided is not an integer
        {
            System.out.println("Incorrect input type. Try again.");
            continue; // restarts while loop to allow for re-entering of a valid input
        }
        scan.close();
    }

Answer 1

Move scan.close(); to outside the while loop.

Also you don't have to construct a new Scanner on each iteration. Move the declaration to outside the loop as well.

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When close the Scanner, this closes the System.in input stream.

So now when you try to instantiate it again, it doesn't find any opened stream and you'll get that exception.