Setting a range for an Integer in Java [duplicate]

Question

This question already has answers here:

Java - limit number between min and max (7 answers)

Closed 4 years ago.

I have the attribute:

private int Number;

I want to limit this number so that it can only be between the values 1 - 3.

Would I do this within a method when I set the value or is there a way of predefining that I only want values 1 - 3 to be valid values for this integer?

Many thanks in advance.

Edit:

I want to take an input of a number between 1 -3.

I've tried using a while, do and for loop each of which I can't get to work without getting stuck in an infinite loop.

Here's some example code:

    private int Number;

    public void setNumber(int aNumber) {
        int count = 1;
        while (count !=0) {
            if ((aNumber < 1) || (aNumber > 3)) {
                System.out.println("Value is out of range 1-3");
                System.out.println("Please try again");
                break;
            } 
            else {
                this.Number = aNumber;
                count = 0;
            }
    }
}

Answer 1

Enforcing the constraint inside the setter for this attribute would certainly work. Another thing you could do is use an enumeration instead of an integer, depending on the constraints of your homework assignment.