import javax.microedition.lcdui.*;
import javax.microedition.midlet.MIDlet;

public class SlideShow extends MIDlet implements CommandListener
{

    Display display;
    Form form;
    Command next;
    Command back;
    Image image;
    int slideNum;
    int maxSlideNum;

    public void startApp()
    {
        display = Display.getDisplay(this);
        form = new Form(null);
        form.setCommandListener(this);
        next = new Command("Next", 4, 1);
        form.addCommand(next);
        back = new Command("Back", 2, 1);
        form.addCommand(back);
        Ticker ticker = new Ticker("My Photoalbum");
        form.setTicker(ticker);
        setImage("/1.png");
        display.setCurrent(form);
    }

    public void commandAction(Command command, Displayable displayable)
    {
        if (command == next && slideNum < maxSlideNum)
            slideNum++;
        if (command == back && slideNum > 1)
            slideNum--;
        form.delete(0);
        setImage("/".concat(String.valueOf(Integer.toString(slideNum))).concat(".png"));
    }

    public void setImage(String string)
    {
        try{
        Exception e;
        image = Image.createImage(string);
        }
        catch(Exception e){}
        form.append(image);
    }

    public void pauseApp()
    {
    }

    public void destroyApp(boolean flag)
    {
    }

    public SlideShow()
    {
        maxSlideNum = 3;
    }

}