Source Code : Display Stats

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Display Stats

/*--------------------------------------------------
* DisplayStats.java
*
* Example from the book:     Core J2ME Technology
* Copyright John W. Muchow   http://www.CoreJ2ME.com
* You may use/modify for any non-commercial purpose
*-------------------------------------------------*/
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class DisplayStats extends MIDlet implements CommandListener
{
  private Display display;             // Reference to Display object
  private Form fmMain;                 // A Form 
  private Alert alTest;                // An Alert
  private Command cmExit;              // A Command to exit the MIDlet
 
  public DisplayStats()
  {
    display = Display.getDisplay(this);
    
    cmExit = new Command("Exit", Command.SCREEN, 1);
    fmMain = new Form("Welcome");
    fmMain.addCommand(cmExit);
    fmMain.setCommandListener(this);

    System.out.println("Display " + (display.isColor() ? "does" : "does not") + " support Color");
    System.out.println("Number of colors: " + display.numColors());
  }

  // Called by application manager to start the MIDlet.
  public void startApp()
  {
    alTest = new Alert("Alert", "This alert screen will be followed by the main form", null, null);
    alTest.setTimeout(Alert.FOREVER);
    display.setCurrent(alTest, fmMain);
  }

  // We are about to be placed in the Paused state
  public void pauseApp()
  {
  }

  // We are about to enter the Destroyed state
  public void destroyApp(boolean unconditional)
  {
  }

  // Check to see if the Exit command was selected
  public void commandAction(Command c, Displayable s)
  {
    if (c == cmExit)
    {
      destroyApp(true);
      notifyDestroyed();
    }
  }
}


           
       

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