classRectangle

public class Rectangle {

    int x, y, width, height;

    public Rectangle(int x, int y, int width, int height) throws IllegalArgumentException {
        if (width < 0 || height < 0) throw new IllegalArgumentException();
        this.x = x;
        this.y = y;
        this.width = width;
        this.height = height;
    }

    public int getHeight() {
        return height;
    }

    public int getWidth() {
        return width;
    }

    public int getX() {
        return x;
    }

    public int getY() {
        return y;
    }

    public String toString() {
        return String.format("Rectangle[x=%d,y=%d,width=%d,height=%d]", x, y, width, height);
    }
}