OOP practice problem

Rectangle.java

// Let me know if you see any mistakes!!

public class Rectangle {

    private int length;
    private int width;

    public Rectangle() {}

    public Rectangle(int width, int length) {
        this.setWidth(width);
        this.setLength(length);
    }

    public int getArea() {
        return width * length;
    }

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

    public boolean isSquare() {
        return width == length;
    }

    public int getLength() {
        return length;
    }

    public void setLength(int length) {
        if (length > 0 && length <= 20) {
            this.length = length;
        } else {
            System.out.println("Invalid length. Defaulting to 10.");
            this.length = 10;
        }
    }

    public int getWidth() {
        return width;
    }

    public void setWidth(int width) {
        if (width > 0 && width <= 20) {
            this.width = width;
        } else {
            System.out.println("Invalid width. Defaulting to 10.");
            this.width = 10;
        }
    }

    // There are a number of ways to do this draw function.
    // This one is probably not the simplest or the most elegant.
    public void draw() {
        drawWidth();
        drawLength();
        drawWidth();
    }

    private void drawLength() {
        for (int j = 0; j < length - 2; ++j) {
            for (int i = 0; i < width; ++i) {
                if (i == 0 || i == width - 1) {
                    System.out.print("*");
                } else {
                    System.out.print(" ");
                }
            }
            System.out.println();
        }
    }

    private void drawWidth() {
        for (int i = 0; i < width; ++i) {
            System.out.print("*");
        }
        System.out.println();
    }
}