I developed a 2 tier java application using swing as front end and Oracle XE database as back end, then i created an exe file using launch4j. The exe file start the application but the application is not able to connect to the database.Can somebody help me?Please help me with step by step procedure.Thank you
How can you possibly have developed a '2 tier java application' when you can't yet write, compile and execute a single class as you ask about in this other thread?
There are NO SHORTCUTS! You need to start at the beginning and work your way through The Java Tutorials as I suggested in your other thread.
And forget about complicationg it even more by trying to create exe files. Until you are comfortable working with the basics you are just making it more likely that you will have trouble that you can't fix.