public class HelloWord extends MIDlet
            {
            HelloWord()
            {……}
            public void startApp()
            {……}
            public void pauseApp()
            {……}
            public void destroyApp(boolean unconditional)
            {……}
            }

import Java.io.*;
            import Javax.microedition.lcdui.*;
            import Javax.microedition.midlet.*;
            public class HelloWorld extends MIDlet implements CommandListener
            {
            private MainCanvas myCanvas;
            private Display myDisplay;
            private Command c1,c2,c3;
            HelloWorld()
            {
            myCanvas=new MainCanvas();
            myCanvas.addCommand(c1=new Command("First",Command.SCREEN,1));
            myCanvas.addCommand(c2=new Command("Second",Command.SCREEN,1));
            myCanvas.addCommand(c3=new Command("Third",Command.SCREEN,1));
            myCanvas.setCommandListener(this);
            myDisplay = Display.getDisplay(this);
            myDisplay = Display.getDisplay(this);
            }
            public void startApp() throws MIDletStateChangeException
            { myCanvas.setUp("first");
            myDisplay.setCurrent(myCanvas);
            }
            public void pauseApp() { }
            public void destroyApp(boolean unconditional) { }
            public void commandAction(Command c,Displayable d)
            { myCanvas.setUp(c.getLabel()); }
            class MainCanvas extends Canvas
            { String ts;
            MainCanvas()
            { super();
            ts=new String("first");
            }
            public void setUp(String s)
            { ts=new String(s); }
            public void paint(Graphics g)
            { g.setColor(0xFFFFFF);
            g.fillRect(0, 0, getWidth(), getHeight());
            g.setColor(0);
            g.drawString("Current is the "+ts,getWidth()/2,60,
            Graphics.HCENTER | Graphics.TOP);
            }
            }
            }