1.a)g.drawRect (45, 20, 100, 50) 

   b)g.drawLine (20, 20, 100, 100)

   c)g.drawCir (100,100,50)

   d)g.drawTri (100,100,50,50,200,200)

2. The program uses a modified version of the code for the ColorPanel class. Then added a paintComponent method that draws a blue rectangle containing a red text message when the window opens and whenever it is refreshed.

3. The method getWidth() and getHeight () return the current width and height of a panel. If these methods are called before  the window is opened, they return a default value of 0.

4. Color, Font style , Font size and Font name.