Rahmah iki's

import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.TextField;
import javax.microedition.midlet.*;


public class pertemuanuts extends MIDlet implements CommandListener{
    Form f = new Form("UTS Komputasi Bergerak");
    TextField angka1 = new TextField("Angka 1", "", 5, TextField.NUMERIC);
    TextField angka2 = new TextField("Angka 2", "", 5, TextField.NUMERIC);
    TextField hasil = new TextField("Angka 3", "", 10, TextField.NUMERIC);
    Command b_hitung = new Command("Hitung", Command.OK, 0);

    public void startApp() {
        f.append(angka1);
        f.append(angka2);
        f.append(hasil);
        f.addCommand(b_hitung);
        f.setCommandListener(this);

        Display.getDisplay(this).setCurrent(f);
    }

    public void pauseApp() {
    }

    public void destroyApp(boolean unconditional) {
    }

    public void commandAction(Command c, Displayable d) {
       if(c == b_hitung){
            int a1 = Integer.parseInt(angka1.getString());
            int a2 = Integer.parseInt(angka2.getString());
            int z = a1 / a2;
            hasil.setString(String.valueOf(z));

       }
    }
}