Validate Scanner input on a numeric range

Question

I\'m currently creating my first game which is executed in a console.

I\'ve been asked to validate an input which can be done with a simple code. The goal is to inpu

Answer 1

As Clint said the problem was in your input. Here's a demo how you can fix this,

try (Scanner scanner = new Scanner(System.in)) {

            int input = 0;
            int min = 1;
            int max = 4;

            boolean inputValidate = false;

            System.out.println("Main Menu");
            System.out.println("=========");
            System.out.println("1. Play Game");
            System.out.println("2. About");
            System.out.println("3. View Saved Games");
            System.out.println("4. Exit");
            System.out.println("");

            do {
                System.out.print(">> ");

                try {
                    input = scanner.nextInt();
                    if (input >= min && input <= max) {
                        inputValidate = true;
                    } else {
                        System.out
                                .println("Not in range. Please input number 1-4.");
                        scanner.nextLine();
                    }
                } catch (InputMismatchException exception) {
                    System.out
                            .println("Not a number. Please input number 1-4.");
                    scanner.nextLine();
                }

            } while (!(inputValidate));