ps.java

非富多彩的十六个J2ME的例子

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

public class ps extends MIDlet implements CommandListener
{
    Display dis;
    Form frm;
    Ticker tick;
    public Command cmdexit=new Command("Exit",Command.EXIT,0);
    public Command cmdok=new Command("Ok",Command.OK,1);
    public ps()
    {
    	
    }
    
    public void startApp() throws MIDletStateChangeException
    {
    	frm=new Form("");
    	dis=Display.getDisplay(this);
    	tick=new Ticker("Contact us for all your hardware and sofware related queries");
    	StringItem str=new StringItem("Welcome to Presto Systems!","");
    	frm.addCommand(cmdexit);
    	frm.addCommand(cmdok);
    	frm.append(str);
    	dis.setCurrent(frm);
    	frm.setTicker(tick);
    	frm.setCommandListener(this);
    	
    }  
    
    public void commandAction(Command c, Displayable d)
    {
    	
    	if(c==cmdexit)
    	   destroyApp(true);
    	else if(c==cmdok)
    	 showform();
    }  
    
	   public void destroyApp(boolean unconditional) 
	   {
	     notifyDestroyed();	
	   }
	   
	  public  void pauseApp() 
	  {
	  	
	  } 	
	
	public void showform()
	{
	    frm.addCommand(cmdok);
	    frm.addCommand(cmdexit);
	    frm.setCommandListener(this);
	    dis.setCurrent(frm);	
		
	}
}