public class rectangle {
    private double length;
    private double width;

    public rectangle() {
        length = 1;
        width = 2;
    }
    public rectangle(double l, double w) {
        length = l;
        width = w;
    }
    public double area() {
        double a = length*width;
        return a;
    }
    public double perimeter() {
        double p = (2*length)+(2*width);
        return p;
    }
    public double diagonalLength() {
        double dLength = Math.sqrt((Math.pow(length,2)) + (Math.pow(width,2)));
        return dLength;
    }
    public boolean isASquare() {
        if(length == width) {
            return true;
        }
        else {
            return false;
        }
    }
    public void setLength(double newLength) {
        length = newLength;
    }
    public void setWidth(double newWidth) {
        width = newWidth;
    }
    public double getLength() {
        return length;
    }
    public double getWidth() {
        return width;
    }
}
public class Main {

    public static void main(String[] args) {
        rectangle rect1 = new rectangle();
        System.out.println("The length of rect1 is: " + rect1.getLength());
        System.out.println("The width of rect1 is: " + rect1.getWidth());
        System.out.println("The perimeter of rect1 is: " + rect1.perimeter());
        System.out.println("The area of rect1 is: " + rect1.area());
        System.out.println("The diagonal length of rect1 is: " + rect1.diagonalLength());
        System.out.println("The square test result is: " + isASquare());
        rectangle rect2 = new rectangle(4,5);
        System.out.println("The length of rect2 is: " + rect2.getLength());
        rectangle rect3 = new rectangle(6,6);


    }
}