HelloWorld application example

1. Create the HelloWorld panel

     public class HelloWorldPanel extends Panel {
       public HelloWorldPanel() {
         add(new Label("Hello world !!!");
       }
     }

   Extend class Panel and add a text label to display "Hello world !!!"

2. Create your own application manager class

     public class HelloWorldApplicationManager extends ApplicationManager {
     
       public HelloWorldApplicationManager() {
         super(new HelloWorldPanel());
       }

   Extend ApplicationManager abstract class and call parent constructor to define HelloWorldPanel has first panel (i.e. home page).

3. Modify web.xml

   Open web.xml and modify lines has follow :

     <init-param>
       <param-name>applicationManager</param-name>
       <param-value>HelloWorldApplicationManager</param-value>
     </init-param>

That's all