checkcolor.java

此代码用j2me编写

/*
 * CheckColor.java
 *
 * Created on 2007年3月15日, 上午10:47
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

/**
 *
 * @author linjia
 */

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

public class CheckColor extends MIDlet implements CommandListener {
    
    private Display dispaly;
    private Form form;
    private Textbox textbox;
    private Command exit;
    
    
    /** Creates a new instance of CheckColor */
    public CheckColor() {
        display=Display.getDisplay(this);
        exit=new Command("Exit",Command.SCREEN,1);
        String message=null;
        if(display.isColor())
        {
            message="Color display";
            
        }
        else 
        {
            message="No Color display";
            
        }
        
        textbox=new Textbox("Check Color",message,17,0);
        textbox.addCommand(exit);
        textbox.setCommandListener(this);
        
    }
    public void stareApp()
    {
        display.setCurrent(textbox);
    }
    public void pauseApp()
    {
        
    }
    public void destroyApp(boolean unconditonal)
    {
        
    }
    public void commandAction(Command command,Display displayable)
    {
        if(command==exit)
        {
            destroyApp(true);
            notifyDestroyrd();
        }
    }
}