Hello.
You will need to learn the basics of Java to be able to use JCreator. This is simply an editor. The best place to start is by reading the official Sun Java tutorial lessons. You will learn loads here:
The Java™ Tutorials
If you have any questions about JCreator then check out their support forums:
JCreator Forum Board (Powered by Invision Power Board)
I can help you to get started.
Open JCreator and go to
File > New Project.
If its there, select Java application.
It will then ask you to pick a project name. Its up to you what you pick but for starters try something like MyClass.
Click OK and MyClass.java project will be created on screen.
Delete any code that it shows and type this:
class MyClass {
public static void main(String[] args) {
System.out.println("Hello World");
}
}
Now at the top click
Build > Compile Project or hit the F7 key.
Hopefully no compile errors will show.
Then to run this program click
Build > Execute Project. or hit the F5 key.
Your console window will now display "Hello World"
Congratulations. You have just written your first Java program in JCreator.
Now obviousally this is the complete basics. To be able to run Java programs on mobile phones I suggest you Google for tutorials.