Inspired by swing (LWUIT)

i present here the source code of my program that when executed will
display four icons with two commands 1 ok 2exit

i have to show next displayble "form" upon click of "ok" soft button ,
anuone told me to use getFocus() to get the current selected image ,
but i don't know how to use it ... just help me out

import com.sun.lwuit.Command;
import com.sun.lwuit.Component;
import com.sun.lwuit.Display;
import com.sun.lwuit.Form;
import com.sun.lwuit.Image;
import com.sun.lwuit.Label;
import com.sun.lwuit.events.ActionEvent;
import com.sun.lwuit.events.ActionListener;
import com.sun.lwuit.layouts.GridLayout;
import java.io.IOException;
import javax.microedition.midlet.MIDlet;

public class ImageListner extends MIDlet implements ActionListener{
    Form f1;
    public void startApp() {
         Display.init(this);
    getForm();
    }

    public void pauseApp() {
    }

    public void destroyApp(boolean unconditional) {
    }
    public Form getForm()
    {
        try {

            f1 = new Form("Text");

            f1.setLayout(new GridLayout(2,2));
            Image i1 = Image.createImage("/res/girl2-32.png");
            Label l1 = new Label(i1);
            l1.setText("Hello");
            l1.setTextPosition(Component.BOTTOM);
            l1.setAlignment(Component.CENTER);
            l1.setAlignment(Component.CENTER);
            l1.getStyle().setMargin(10, 10, 10, 10);
            Command ok = new Command("Ok");
            f1.addCommand(ok);
            Command exit = new Command("Exit");
            f1.addCommand(exit);
            f1.addComponent(l1);

            Label l2 = new Label(i1);
            l2.setText("Hello");
            l2.setTextPosition(Component.BOTTOM);
            l2.setAlignment(Component.CENTER);
            l2.setAlignment(Component.CENTER);
            l2.getStyle().setMargin(10, 10, 10, 10);
            f1.addComponent(l2);

            Label l3 = new Label(i1);
            l3.setText("Hello");
            l3.setTextPosition(Component.BOTTOM);
            l3.setAlignment(Component.CENTER);
            l3.setAlignment(Component.CENTER);
            l3.getStyle().setMargin(10, 10, 10, 10);
            f1.addComponent(l3);

            Label l4 = new Label(i1);
            l4.setText("Hello");
            l4.setTextPosition(Component.BOTTOM);
            l4.setAlignment(Component.CENTER);
            l4.setAlignment(Component.CENTER);
            l4.getStyle().setMargin(10, 10, 10, 10);
            f1.addComponent(l4);
            f1.setCommandListener(this);
        }
         catch (IOException ex) {
        ex.printStackTrace();
        }
            f1.show();
        return f1;
    }

    public void actionPerformed(ActionEvent ae) {
        Form current = Display.getInstance().getCurrent();
        if(current == f1)
        {

        }

    }
    private Component getFocused() {
        throw new UnsupportedOperationException("Not yet
implemented");
    }
}