Learning Command action in J2ME (Events)

This post gives you general overview about command buttons in a mobile application as well as redirection from one screen to other within same midlet.
Note:-  Before viewing this video please go through the previous tutorials as well since this one is the extention of previous tutorials.
Starting with J2ME
Understanding basic midlet source code

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Source Code:-

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.midlet.*;

/**
 * @author vaibhav
 */
public class Midlet1 extends MIDlet implements CommandListener
{
    public static Form form1=new Form("Hello ,this is my first form");
    public static Form form2=new Form("new form");
    private Command ok=new Command("load",Command.SCREEN,1);
    private Command EXIT=new Command("EXIT",Command.EXIT,0);

    public Midlet1()
    {
        form1.addCommand(ok);
        form1.addCommand(EXIT);
        form1.setCommandListener(this);
    }

    public void startApp() {
        show(0);
    }

    public void commandAction(Command c,Displayable d)
    {
        if(c==ok)
        {
            show(1);
        }
        if(c==EXIT)
        {
            destroyApp(true);
            notifyDestroyed();
        }
    }
    public void show(int i)
    {
        if(i==0)
        {
        Display.getDisplay(this).setCurrent(form1);
        }
        if(i==1)
        {
        Display.getDisplay(this).setCurrent(form2);
        }
    }
    public void pauseApp() {
    }

    public void destroyApp(boolean unconditional) {
    }
}                                                                                                            Next Tutorial