CODEWITHSUNDEEP
javarecursionjava.util.scannerstack-overflow
Benjamin Porter
Benjamin Porter

Reputation: 1

Java scanner not reading console in recursions of function

I'm making a number verifier for a console game that uses recursion to ensure that the user eventually gives a valid input. But whenever I submit an invalid input I get an imminent wall of “That is not a valid input. Please try again: That is not a valid input. Please try again: That is not a valid input. Please try again:” Until a StackOverflowError occurs. What I'm guessing is happening is that the scanner isn't reading the console in recursions. But I don't understand why that would be happening.

private int getInt(int greatest, int least)
{
    try 
    {
        
        int output = scanner.nextInt();
        if(output > greatest || output < least)
        {
            System.out.println("That is not a valid input. Please try again:");
            return getInt(greatest, least);
        }
        return output;
    } catch (Exception e) 
    {
        System.out.println("That is not a valid input. Please try again:");
        return getInt(greatest, least);
    }
}

What I've tried so far is having the function close the scanner when it's done and using a parsed nextLine instead of nextInt.

Upvotes: -3

Views: 65

Answers (0)

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