Change Label Text : Form « J2ME « Java

Change Label Text

Change Label Text
* Example from the book:     Core J2ME Technology
* Copyright John W. Muchow
* You may use/modify for any non-commercial purpose
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class ChangeLabelText extends MIDlet implements CommandListener
  private Display display;      // Reference to Display object
  private Form fmMain;          // The main form
  private StringItem siUser;    // The message
  private Command cmNext;       // Next label and message
  private Command cmExit;       // Command to exit the MIDlet

  public ChangeLabelText()
    display = Display.getDisplay(this);

    // Create text message and commands
    siUser = new StringItem("UserId: ", "johnm");
    cmNext = new Command("Next", Command.SCREEN, 1);
    cmExit = new Command("Exit", Command.EXIT, 1);

    // Create Form, add Command & StringItem, listen for events
    fmMain = new Form("Preferences");    

  // Called by application manager to start the MIDlet.
  public void startApp()

  public void pauseApp()
  { }
  public void destroyApp(boolean unconditional)
  { }

  public void commandAction(Command c, Displayable s)
    if (c == cmNext)
      // This method is inherited from the Item class
      siUser.setLabel("Account #: ");
      // Change the text
      // Remove the Next command
    else if (c == cmExit)


Related examples in the same category

1.Create Form With Items Create Form With Items
2.GUI Test in MIDletGUI Test in MIDlet
3.Login MidletLogin Midlet
4.Verify Area CodeVerify Area Code
5.Form ScrollForm Scroll
6.Form JuggleForm Juggle
7.Form Example MIDletForm Example MIDlet
8.Display StatsDisplay Stats
9.Read Display FileRead Display File