This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma 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.