Thanx Cherrill, its also a great solution but i want to make flash attach with java.... Animation made under flash are more realistic look then gif files. VB.NET provide support for this, so i m wondering for same in java.
Here is a list of Java Flash open source projects maybe you can find something suitable there.
From my point of view I was only interested in Project Capuchine, that was to get flash on JME platform, plus little of Java-Flex stuff
As I see it, the big advantage of the splash screen is that java.exe loads and displays it before loading and initialising your app. Any java language-based approach won't display until the application has loaded and main has been called anyway.