Equil Pen to Java Application:

I have a Java Application doing some tasks. I have a Equil Pen. [login to view URL] This will transfer what ever we write one the paper to the computer screen and keep that saved in the form of sketch. What i need is to get what ever we write on paper to be written on my application screen using any method. So that i can save that as a blob in mysql db. Need to do: Write on the application screen. Erase unwanted part in application screen. Save the written sketch in mysql DB. Open an existing image from computer hard disk or already saved sketch from mysql db into application screen and also write over that as well.