Learning from j2-start Development

I used to get a little JAVA a long time ago. Now I think it's time to cross the river by feeling the stones.
In this part, the function of reading books on mobile phones should be implemented in the form of jar and then published and run on the mobile phone. You can flip pages, set bookmarks, and set fonts.

// Joymobook v1.0 by freemobile
// Www.joymo.cn; www.iiwap.net

Import java. io. IOException;
Import javax. microedition. lcdui .*;
Import javax. microedition. midlet. MIDlet;
Import javax. microedition. midlet. MIDletStateChangeException;

Public class JoymoBookFrm extends MIDlet
Implements CommandListener
{

Private Display dsp;
Private Form frm;
Private Command lateral view;
Private Command cmdExit;
Private Image img;

Public JoymoBookFrm ()
{
}

Public final void startApp ()
Throws MIDletStateChangeException
{
Dsp = Display. getDisplay (this );
Lateral view = new Command ("reading", 4, 1 );
CmdExit = new Command ("quit", 7, 2 );
Frm = new Form (" -joymo.cn"); // www.joymo.cn
Try
{
Img = Image. createImage ("/Java.png ");
}
Catch (IOException _ ex ){}
ImageItem imageitem = new ImageItem ("\ n", img, 3, "Image Cannot be shown ");
Frm. append (imageitem );
StringItem si = new StringItem (null, "[title] Test \ n" + "[author] freemobile \ n [production] \ n [description] the designer of this software is freemobile, QQ: 19149653. \ n Internet access: joymo.cn \ nWAP access: iiwap.net ");
Frm. append (si );
Frm. addCommand (lateral view );
Frm. addCommand (cmdExit );
Frm. setCommandListener (this );
Dsp. setCurrent (frm );
}

Public final void pauseApp ()
{
}

Public final void destroyApp (boolean flag)
Throws MIDletStateChangeException
{
}

Public final void commandAction (Command command, Displayable displayable)
{
If (command = cmdExit)
{
Yydestroyed ();
Return;
}

// Begin to view the book
// If (command = lateral view)
// Transfer the reading process to Alibaba Cloud, and use specialized classes to implement --www.iiwap.net
}
}

In reality, the software's logoas on the screen is a java.png image. The interface looks professional.