Java First Program: Hello World

Creating Your Java First Program

Your first application, HelloWorldApp, will simply display the greeting "Hello World!"To create this, just follow the steps below :

- Open Netbeans and create a new project by clicking the New Project icon on the NetBeans toolbar :

  
Then choose a  Java Application project from  Java category.

Click Next, and choose a name for your project (in the Project Name text box).
Make sure that  the box "Create Main Class"  is checked  (this will create a Java application with a predefined main class), then click Finish:

As you can see, NetBeans created the first class and the main () function in which we will write our code.

Type this line of code in the main () function:

System.out.println ("Hello World");

You get then the following code :

package firstapp;

public class FirstApp {

 public static void main(String[] args) {
 System.out.println ("Hello World");
 
 }
}