First Alert, J2ME

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import javax.microedition.midlet.*;

import javax.microedition.lcdui.*;

public class FirstAlert extends MIDlet implements CommandListener{

Display display;

List list;

Image img;

Alert alAl, alCo, alEr, alIn, alWa;

Command cmExit;

public FirstAlert() {

display = Display.getDisplay(this);

try {

img = Image.createImage("/img.png");

} catch (java.io.IOException e) {

}

cmExit = new Command("Keluar", Command.EXIT, 1);

list = new List("First Alert", List.IMPLICIT);

list.append("ALARM", img);

list.append("CONFIRMATION", img);

list.append("ERROR", img);

list.append("INFO", img);

list.append("WARNING", img);

list.addCommand(cmExit);

list.setCommandListener(this);

display.setCurrent(list);

alAl = new Alert("ALARM", "Alert ALARM", null, AlertType.ALARM);

alAl.setTimeout(Alert.FOREVER);

alCo = new Alert("CONFIRMATION", "Alert CONFIRMATION", null, AlertType.CONFIRMATION);

alCo.setTimeout(Alert.FOREVER);

alEr = new Alert("ERROR", "Alert ERROR", null, AlertType.ERROR);

alEr.setTimeout(Alert.FOREVER);

alIn = new Alert("INFO", "Alert INFO", null, AlertType.INFO);

alIn.setTimeout(Alert.FOREVER);

alWa = new Alert("WARNING", "Alert WARNING", null, AlertType.WARNING);

alWa.setTimeout(Alert.FOREVER);

}

public void startApp() {

}

public void pauseApp() {

}

public void destroyApp(boolean unconditional) {

}

public void commandAction(Command c, Displayable s){

if (c == List.SELECT_COMMAND){

switch (list.getSelectedIndex()){

case 0:

display.setCurrent(alAl);

break;

case 1:

display.setCurrent(alCo, list);

break;

case 2:

display.setCurrent(alEr);

break;

case 3:

display.setCurrent(alIn, list);

break;

case 4:

display.setCurrent(alWa);

break;

}

}else if(c == cmExit){

exitMIDlet();

}

}

public void exitMIDlet() {

destroyApp(false);

notifyDestroyed();

}

};

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