Can I Study J2ee By Self By Searching Online Tutorials?

Hi friends,I have some idea in JSP,Servlet,JDBC ,JAVA .But don't know J2EE Architecture.Can i study J2EE framework by self.If yes,please suggest a good online tutorial.Please suggest a tutorial which you experianced and got a good result.I am interesting in Java and its technologies.Also please suggest me how to be an expert in Java.Please tell about the wide opportunities of java

I suggest googling for jsp/servlet tutorials and picking a couple of them. If a tutorial is good or bad depends on the reader. Find tutorials that suit you. Also check out suns tutorial at http://www.oracle.com/technetwork/java/index.html and don't forget to study examples in tutorials and the net. You can only become an expert by having experience, so dig in.
When talking about java on the client side, then its a very convenient way of developing advanced things like 3d etc. because it only requires java to be installed on the client, (applets can download dependencies on the fly if needed).