Hello World My First JAVA App

First, install all the required IDE components. From Eclipse. org

Then what follows is quite simple~, just a start!

1, Create  A Java Project as "Hello World"

2, it seems pretty much an OO language, to me at least. What to do next is to add a class. It should  be familiar to you if you 've got hands on Objective C, the powerful development language Apple uses.

 

3, Create A class from the menu, which is a Java Class instead of NS Object Class as in COCOA:

Check the Public Void Main() Function. So it would be the default entry for your app. 

CONTAST: in COCOA, it's created automatically by the project and runs in the background. It's invisible to you in oBJC

4, Create the method, or , function in main() as:

System.out.print("");

and Run

 

5, Bingo: You got it in your console

BO 

2011.5.8