Hi, I had written a standalone TicTacToe game in swing and then modified it to run as an Applet. It runs fine when I open the HTML which has the <Applet> tag. The class file of my java code is placed in the same directory. I tried putting this HTML on the Tomcat server under one of the web applications (tictactoe) under webapps. I have put the class file for the Applet under WEB-INF\classes under tictactoe. i.e webapps\tictactoe\web-inf\classes What do I need to give the 'codebase' as? Since my applet class does not have any package structure I tried omitting the codebase parameter from the <APPLET> tag but I am getting ClassNotFoundException.