hellomidlet.java

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import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
public class HelloMIDlet extends MIDlet implements CommandListener
{
        private Display display;
        private HelloCanvas myCanvas;

        private Command   CMD_EXIT = new Command("退出", Command.SCREEN, 1);

        public HelloMIDlet()
        {
               	myCanvas = new HelloCanvas();
                display = Display.getDisplay(this);
                myCanvas.addCommand(CMD_EXIT);                                
                myCanvas.setCommandListener(this);
        }
        public void startApp()
        {
                
                 display.setCurrent(myCanvas);
        }
        public void pauseApp()
        {
        }
        public void destroyApp(boolean unconditional)
        {
        }
        public void commandAction(Command cmd, Displayable disp) {
        if(cmd == CMD_EXIT){
        destroyApp(false);
        notifyDestroyed();
        }               
        }
}