Source Code : TickerList

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TickerList

/*
J2ME: The Complete Reference

James Keogh

Publisher: McGraw-Hill

ISBN 0072227109

*/
//jad file (please verify the jar size)
/*
MIDlet-Name: TickerList
MIDlet-Version: 1.0
MIDlet-Vendor: MyCompany
MIDlet-Jar-URL: TickerList.jar
MIDlet-1: TickerList, , TickerList
MicroEdition-Configuration: CLDC-1.0
MicroEdition-Profile: MIDP-1.0
MIDlet-JAR-SIZE: 100

*/
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class TickerList extends MIDlet implements CommandListener
{
  private Display display; 
  private List list; 
  private final String tech;
  private final String entertain;
  private Ticker ticker; 
  private Command exit; 
  private Command submit;
  public TickerList()
  {
    display = Display.getDisplay(this);
    tech = new String ("IBM 55 MSFT 32 SUN 52 CISCO 87");
    entertain = new String ("CBS 75 ABC 455 NBC 243 GE 21");
    exit = new Command("Exit", Command.SCREEN, 1);
    submit = new Command("Submit", Command.SCREEN, 1);
    ticker = new Ticker(tech); 
    list = new List("Stock Ticker", Choice.EXCLUSIVE);
    list.append("Technology", null);
    list.append("Entertainment", null);
    list.addCommand(exit);
    list.addCommand(submit);
    list.setCommandListener(this);
    list.setTicker(ticker);
  }
  public void startApp()
  {
    display.setCurrent(list);
  }
  public void pauseApp()
  { 
  }
  public void destroyApp(boolean unconditional)
  {
  }
  public void commandAction(Command command, Displayable display)
  {
    if (command == exit)
    {
      destroyApp(true);
      notifyDestroyed();
    }
    else if (command == submit)
    {
      if (list.getSelectedIndex() == 0)
      {
         ticker.setString (tech);
      }
      else
      {
        ticker.setString(entertain);
      }
    }
  }
}


           
       

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