Hello to all of you guys, im starting to learn of how to make a java game but first i want to know how to know the system requirement of the game that i will make. Like (their Video card must be like this their RAM, ROM and Processor so they can open and play it)
thank you and have a nice day!
Welcome
It all depends on the game you’re making.
Since you’re starting out, it’s probably safe to say that you won’t be making any really resource hungry games at first, so then any PC with java installed will usually do.
Things will change when you will use 3rd party libraries for hardware accellerated 3D (libraries like JME, LWJGL, JOGL), which usually require a videocard with OpenGL support, and then still things will also depend on what features of OpenGL you use (not all videocards support all OpenGL features).
What you also need to consider is the target version of java you’re aiming for (for example java 1.4 or higher will make things more likely to work than if you target java6 and up).
I suggest you just start with your game and have some people test. This is a good place to post your work and have people try it out.
You could also say that somebody starting out, needs a much faster system to run his game, than somebody who programmed it with a lot of experience. 
Anyway, anything over 2.0GHz with 512+MB (for the Eclipse/NetBeans), and a crappy onboard GPU, will do just fine.
But in general to learn what your system requirements really are all you can do is test it on a bunch of different systems. 
Ok thanks for your help guys have a nice day 