Rectangle 2

public class Rectangle {
    private int length, width;

    public Rectangle() {
        length = 2;
        width = 1;
    }

    public void Rectangle(int l, int w) {
        length = l;
        width = w;

    }

    public int perimeter() {
        int perimeter;
        perimeter = 2 * length + 2 * width;
        return(perimeter);
    }

    public int area() {
        int area;
        area = length * width;
        return(area);
    }

    public static void formula(){
        System.out.println("Area formula: a = l * w");
    }

    public static void main(String[] args) {
        Rectangle box = new Rectangle();

        System.out.println("Perimeter: " + box.perimeter());
        System.out.println("Area: " + box.area());
        Rectangle.formula();
    }

}