J2ME Form Class

In this J2ME Extends Form example, we are going to discuss about form, extending form in our class and appending values to it.

J2ME Form Class

J2ME Form Class

     

In this J2ME Extends Form example, we are going to discuss about form, extending form in our class and appending values to it. But first of all lets discuss about form. In general, a form is a screen and this screen can contain any type of items such as images, text and text fields to get or show values to users. 

We can also set values into these forms using following syntax? 

public int append(Item item)

The forgoing syntax can be used to add items into form in J2ME.

The application will look like as follow...

J2ME form class, append item example

In this image, "My Form" is a form created by us and "Hello Item" is a item that is appended in this form using append method.

Syntax of J2ME Form Class File name AppendItem.java

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class AppendItem extends MIDlet{
  private Display display;
  private MIDlet midlet;

  public void startApp(){
  Form form = new MyForm("MY FORM");
  display = Display.getDisplay(this);
  display.setCurrent(form);
  }

  public void pauseApp(){}

  public void destroyApp(boolean unconditional){}

  class MyForm extends Form implements CommandListener{
  private StringItem textItem;
  private Command exit;
  
  public MyForm(String title){
  super(title);
  exit = new Command("Exit", Command.BACK, 1);
  this.textItem = new StringItem (null, "Hello Item");
  addCommand(exit);
  append(this.textItem);
  this.setCommandListener(this);
  }

  public void commandAction(Command c, Displayable d){
  String label = c.getLabel();
  if(label.equals("Exit")){
  midlet.notifyDestroyed(); 
  }
  }
  }
}

Download Source Code

Tutorials

  1. Java Plateform Micro Edition
  2. Midlet Lifecycle
  3. Source code of 'jad' and 'properties' file
  4. Creating Midlet Application For Login in J2ME
  5. Text Field Midlet Example
  6. Phone Book Midlet Example
  7. Date Field Midlet Example
  8. Command Midlet Example
  9. Check Box Midlet Example
  10. A MIDlet Example to execute Alert Message with an Image
  11. J2ME Alert Example
  12. Radio Button in J2ME
  13. J2ME List Image
  14. List in J2ME
  15. J2ME Canvas Example
  16. J2ME Ticker Example
  17. Creating Multiple Type List
  18. Creating Menu Using Canvas Class
  19. Creating Canvas Form Example
  20. J2ME Thread Processing Example
  21. Draw Line in J2me
  22. Draw Rectangle in J2ME
  23. Draw Font Using Canvas Example
  24. Draw String Using Canvas
  25. Interactive, Non-Interactive Gauge Example
  26. Creating Volume Bar Using Gauge Class
  27. Image Item Using Canvas Example
  28. Image Icon Using Canvas Example
  29. Draw Clip Area Using Canvas
  30. Player Class in J2ME
  31. Draw arc in J2ME
  32. Building a J2ME sliding menu with text and images(part-1)
  33. Building a J2ME sliding menu with text and images(part-2)
  34. Video Player MIDlet Example
  35. User Define Alert Example
  36. Ring Tones MIDlet Example
  37. Pointer Example
  38. Media MIDlet Example
  39. Get Help MIDlet Example
  40. Different Size of Font MIDlet Example