This week's giveaway is in the EJB and other Java EE Technologies forum. We're giving away four copies of EJB 3 in Action and have Debu Panda, Reza Rahman, Ryan Cuprak, and Michael Remijan on-line! See this thread for details.
Hi Balan, Welcome to Java Ranch! Yes, you sure can. If it's simple, you might want to do it yourself, from scratch, just using the 2D API calls (methods like drawLine() in the java.awt.Graphics2D class.) There are lots of interesting examples in the JDK; see the demos/jfc/Java2D subdirectory of your JDK directory. If you want to make more complex graphs, then do a Google search on "Java graph library" -- you'll find plenty.