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Group  
Updated Nov 26, 2010 by RitaKise...@gmail.com

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

/ Start of 'Group' class / public class Group extends MIDlet implements CommandListener {

private Command exitCommand; private Form form; private static String Out = "Leader: Burkov Edward, 11-3\nKiseljova Margarita, 10-3";

/ Start MIDlet
  • ARGUMENTS: None.
  • RETURNS: None.
public void startMIDlet() {
switchDisplayable(null, getForm());
} /
End of 'startMIDlet' function /
/ Switches a current displayable in a display.
  • ARGUMENTS:
  • - the Alert which is temporarily set to the display( if null, then next Displayable is set immediately)
  • Alert alert;
  • - the Displayable to be set
  • Displayable nextDisplayable;
  • RETURNS: None.
public void switchDisplayable(Alert alert, Displayable nextDisplayable) {
Display display = getDisplay();
if (alert == null)
display.setCurrent(nextDisplayable);
else
display.setCurrent(alert, nextDisplayable);
} / End of 'switchDisplayable' function /
/ Indicate that command has been invoked on a particular displayable.
  • ARGUMENTS:
  • - the Command that was invoked
  • Command command;
  • - the Displayable where the command was invoked
  • Displayable displayable;
  • RETURNS: None.
public void commandAction(Command command, Displayable displayable) {
if (displayable == form)
if (command == exitCommand)
exitMIDlet();
} /
End of 'commandAction' function /
/ Get an initiliazed instance of exitCommand component.
  • ARGUMENTS: None.
  • RETURNS:
  • - the initialized component instance
  • exitCommand;
public Command getExitCommand() {
if (exitCommand == null)
exitCommand = new Command("Exit", Command.EXIT, 0);
return exitCommand;
} / End of 'getExitCommand' function /
/ Get an initiliazed instance of form component.
  • ARGUMENTS: None.
  • RETURNS:
  • - the initialized component instance
  • form;
public Form getForm( ) {
if (form == null) {
form = new Form("Group #6", null ); Ticker Tick = new Ticker(Out); form.setTicker(Tick); form.addCommand(getExitCommand()); form.setCommandListener(this);
} return form;
} /
End of 'getForm' function /
/ Get a display instance.
  • ARGUMENTS: None.
  • RETURNS:
  • - the display instance
  • Display;
public Display getDisplay () {
return Display.getDisplay(this);
} / End of 'getDisplay' function /
/ Start application function
  • ARGUMENTS: None.
  • RETURNS: None.
public void startApp( ) {
startMIDlet();
} /
End of 'startApp' function /
/ Pause application function
  • ARGUMENTS: None.
  • RETURNS: None.
public void pauseApp( ) { } / End of 'pauseApp' function /
/ Exits MIDlet.
  • ARGUMENTS: None.
  • RETURNS: None.
public void exitMIDlet() {
switchDisplayable (null, null); destroyApp(true); notifyDestroyed();
} /
End of 'exitMIDlet' function /
/ Destroy application function
  • ARGUMENTS:
  • - unconditional exit flag
  • boolean unconditional;
  • RETURNS: None.
public void destroyApp( boolean unconditional ) { } / End of 'destroyApp' function /

} / End of 'Group' class /

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