public class GetAndSet {
    int X;
    
    // Setter	
    public void set_X(int X) {
        this.X = X;
        System.out.println("We've changed X to: " + X);
    }

    // Getter
    public int get_X() {
        if (this.X == 0) {
            System.out.println("X is zero");
            return 0;
        } else {
            return X;
        }
    }

    public static void main(String[] args) {
        System.out.println("This is an example of Getters and Setters");
        GetAndSet myGetAndSet = new GetAndSet();
        System.out.println(myGetAndSet.get_X());
        myGetAndSet.set_X(5);
        System.out.println(myGetAndSet.get_X());
    }
}