Computer and Programming

import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
 
public class MIDList extends MIDlet implements CommandListener {
 
    private Display display;
    private List list;
    private Command cmdPilih;
    private Command cmdBack;
    private Image img1, img2, img3, img4, img5;
 
    public MIDList() {
        display = Display.getDisplay(this);
    }
 
    public void startApp() {
        //membuat objek Command
        cmdPilih = new Command("Pilih", Command.SCREEN, 2);
        cmdBack = new Command("Back", Command.BACK, 1);
 
        //membuat daftar icon
        try {
            img1 = Image.createImage("/register.png");
            img2 = Image.createImage("/contact.png");
            img3 = Image.createImage("/tools.png");
            img4 = Image.createImage("/wizard.png");
            img5 = Image.createImage("/help.png");
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
 
        //membuat List bertipe Exclusive
        list = new List("List Tipe Exclusive", Choice.EXCLUSIVE);
        list.append("Register", img1);
        list.append("Contact", img2);
        list.append("Tool", img3);
        list.append("Wizard", img4);
        list.append("Help", img5);
        list.addCommand(cmdPilih);
        list.addCommand(cmdBack);
        list.setCommandListener(this);
        display.setCurrent(list);
    }
 
    public void pauseApp() {
    }
 
    public void destroyApp(boolean unconditional) {
    }
 
    public void commandAction(Command c, Displayable d) {
        if (c == cmdBack) {
            destroyApp(false);
        } else {
            int indeks = list.getSelectedIndex();
            Alert info = new Alert("Informasi");
            info.setString("Anda memilih : " + list.getString(indeks));
            info.setTimeout(Alert.FOREVER);
            display.setCurrent(info, list);
        }
    }
}