user input check int only

Question

I am trying to have my user input not crash my program by restricting what the user can input such as:

1. only being an int
2. being between 1-30

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Answer 1

    String choose = "";
    System.out.println("Test if input is an integer. Type 'quit' to exit.");
    System.out.print("Type an integer: ");
    Scanner sc=new Scanner(System.in);

    choose = sc.nextLine();

    while (!(choose.equalsIgnoreCase("quit"))) {
        int d = 0;
        try {
            d = Integer.parseInt(choose);

            if (!(d > 0 && d < 31)) {
                System.out.println("Being between 1-30");
            } else {
                System.out.println("Input is an integer.");
            }
        } catch (NumberFormatException nfe) {
            System.out.println("Enter only int");
        }

        System.out.print("Type an integer to test again or 'quit' to exit: ");
        sc = new Scanner(System.in);
        choose = sc.nextLine();
    }

    sc.close();
    System.out.print("Program ends.");