Implementing the main MIDlet

IAPInfoMIDlet class

Create the main MIDlet class, which creates and shows the IAPTestForm class.

1. Create the IAPInfoMIDlet class file.

2. Import the required classes.

   /*
    * Copyright © 2007 Nokia. 
    */
   
   package com.nokia.midp.examples.IAPInfoAPI.iapinfotest;
   
   import javax.microedition.midlet.*;
   import javax.microedition.lcdui.*;
   
   

3. Set IAPInfoMIDlet to extend the MIDlet.

   /**
    * IAPInfoMIDlet.java
    * MIDlet to test the APNInfo implementation
    * 
    * This class extends the class javax.microedition.midlet.MIDlet. This
    * class is the entry point in the example application. The IAPInfoMIDlet class
    * creates and maintains references to an IAPTestForm object.
    * < p >
    * Note that the IAPInfoMIDlet class has no constructor. MIDlet constructors 
    * are not required to do anything because initializing of the object is better 
    * performed in the startApp() method.
    */
    
   public class IAPInfoMIDlet extends MIDlet {
     

4. Create the three required MIDlet methods for starting, pausing, and ending the application.

       /**
        * This method is called by the runtime
        * at starting the MIDlet. 
        * 
        * Creates the IAPTestForm class, the UI creation
        * is implemented in the IAPTestForm class
        * 
        */
       public void startApp() {
           try{
               IAPTestForm testForm = new IAPTestForm( this );
           }catch( Throwable e){
               System.out.println ( "EXCEPTION:" + e.getMessage ()) ;
               System.err.println( "Exception at startApp method:" + e.toString());
               e.printStackTrace();
           }
       }
       
       public void pauseApp() {
           ;//do nothing
       }
       
       public void destroyApp( boolean unconditional ) {
           ;//do nothing        
       }
   }