Write a class called Rectangle that represents a rectangular twodimensional region. Your Rectangle objects should have the following methods:

public Rectangle(int x, int y, int width, int height)

Constructs a new Rectangle whose top-left corner is specified by the given coordinates and with the given width and height. Throw an IllegalArgumentException on a negative width or height.

public int getHeight()

Returns this Rectangle ’s height.

public int getWidth()

Returns this Rectangle ’s width.

public int getX()

Returns this Rectangle ’s -coordinate.

public int getY()

Returns this Rectangle ’s -coordinate.

public String toString()

Returns a String representation of this Rectangle , such as "Rectangle[x=1,y=2,width=3, height=4]".