Basic graphics package -help

I want to develop a basic graphics package by using Java applets. I have to use shape class hierarchy and inheritance( 2D shapes such as squares, rectangels, triangles and circles ). And the program will interact with the user ( such that set the position, size, shape, etc. )

I am newbie on Java and this project is very important for me. Can you please give me an example where and how to define string processes ( ie. x ,y coordinates, width and height etc. ) , what should be in sub classes ( circle,square, etc. ) and how to use switch case?

Thanks,

[574 byte] By [Denthraxa] at [2007-11-27 1:03:43]