how to run a java projec in eclipse downloaded from othe website

hey
i had downloaded a virtual classroom java code.. how can i open it in eclipse so that i can try running it, nd look for runtime errors. please help asap..

No idea what you're talking about, however, eclipse does have the ability to open java projects (assuming you have the source). Just create a new project and tell eclipse you have existing sources. Point eclipse to the code you downloaded, and let it create a java project from that. Then you need only select the main method and run the program.

Where is it? I'm curious, because I always make new project, create new class and name it same as class in imported file to be compatible.

actually i downloaded an onlinetest java project. 400 line code is in onlinetest.java file
when i open it in eclipse and try to run it. it asks run on server or antbuild.
so how should i run it because it is not be run on the server as its not connected with the database. all the question and answers are within itself.
so how can i run it as an applet window. please help