// Copyright 2002 Nokia Corporation.//// THIS SOURCE CODE IS PROVIDED 'AS IS', WITH NO WARRANTIES WHATSOEVER,// EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY, FITNESS// FOR ANY PARTICULAR PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE// OR TRADE PRACTICE, RELATING TO THE SOURCE CODE OR ANY WARRANTY OTHERWISE// ARISING OUT OF ANY PROPOSAL, SPECIFICATION, OR SAMPLE AND WITH NO// OBLIGATION OF NOKIA TO PROVIDE THE LICENSEE WITH ANY MAINTENANCE OR// SUPPORT. FURTHERMORE, NOKIA MAKES NO WARRANTY THAT EXERCISE OF THE// RIGHTS GRANTED HEREUNDER DOES NOT INFRINGE OR MAY NOT CAUSE INFRINGEMENT// OF ANY PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OWNED OR CONTROLLED// BY THIRD PARTIES//// Furthermore, information provided in this source code is preliminary,// and may be changed substantially prior to final release. Nokia Corporation// retains the right to make changes to this source code at// any time, without notice. This source code is provided for informational// purposes only.//// Nokia and Nokia Connecting People are registered trademarks of Nokia// Corporation.// Java and all Java-based marks are trademarks or registered trademarks of// Sun Microsystems, Inc.// Other product and company names mentioned herein may be trademarks or// trade names of their respective owners.//// A non-exclusive, non-transferable, worldwide, limited license is hereby// granted to the Licensee to download, print, reproduce and modify the// source code. The licensee has the right to market, sell, distribute and// make available the source code in original or modified form only when// incorporated into the programs developed by the Licensee. No other// license, express or implied, by estoppel or otherwise, to any other// intellectual property rights is granted herein.package example.fruitmachine;import javax.microedition.midlet.*;import javax.microedition.lcdui.*;import java.io.IOException;public class FruitMachineMIDlet    extends MIDlet{    private final HttpPoster httpPoster;    private final Image logoImage;    private GameScreen gameScreen = null;    private ChangeBetScreen changeBetScreen = null;    private BuyCreditScreen buyCreditScreen = null;    private Account account = null;    public FruitMachineMIDlet()    {        String servletUrl = getAppProperty("Servlet-URL");        httpPoster = new HttpPoster(servletUrl);        logoImage = createImage("/logo.png");        ErrorScreen.init(logoImage, Display.getDisplay(this));        WinScreen.init(logoImage, Display.getDisplay(this));    }    public void startApp()    {        Displayable current = Display.getDisplay(this).getCurrent();        if (current == null)        {            // first time we've been called            Alert splashScreen = new Alert(null,  // no title                                           "Fruit Machine\nNokia",                                           logoImage,                                           AlertType.INFO);            splashScreen.setTimeout(2000);        // 2 seconds            LoginScreen loginScreen = new LoginScreen(this, httpPoster);            // display splash screen, then login screen            Display.getDisplay(this).setCurrent(splashScreen, loginScreen);        }        else        {            Display.getDisplay(this).setCurrent(current);        }    }    public void pauseApp()    {    }    public void destroyApp(boolean unconditional)    {        if (gameScreen != null)        {            gameScreen.abort();   // kill its animation thread        }        httpPoster.abort(); // stop the networking thread    }    public void loginScreenDone(Account account)    {        this.account = account;        gameScreen = new GameScreen(this,                                    httpPoster,                                    account,                                    Display.getDisplay(this),                                    createImage("/bar.png"),                                    createImage("/bell.png"),                                    createImage("/orange.png"),                                    createImage("/lemon.png"),                                    createImage("/plum.png"),                                    createImage("/cherry.png"),                                    createImage("/hold.png"),                                    createImage("/hold1.png"),                                    createImage("/hold2.png"),                                    createImage("/hold3.png"));        Display.getDisplay(this).setCurrent(gameScreen);    }    public void loginScreenQuit()    {        quit();    }    public void gameScreenChangeBet(boolean isHolding, int previousBet)    {        if (changeBetScreen == null)        {            changeBetScreen = new ChangeBetScreen(this, logoImage, account);        }        changeBetScreen.updateValues(isHolding, previousBet);        Display.getDisplay(this).setCurrent(changeBetScreen);    }    public void gameScreenBuyCredit()    {        if (buyCreditScreen == null)        {            buyCreditScreen = new BuyCreditScreen(this,                                                  httpPoster,                                                  logoImage,                                                  account);        }        buyCreditScreen.updateValues();        Display.getDisplay(this).setCurrent(buyCreditScreen);    }    public void gameScreenQuit()    {        quit();    }    public void changeBetScreenDone()    {        Display.getDisplay(this).setCurrent(gameScreen);    }    public void buyCreditScreenDone()    {        Display.getDisplay(this).setCurrent(gameScreen);    }    /*     * On the exit command, cleanup and notify that the MIDlet has been destroyed.     */    private void quit()    {        httpPoster.abort();  // terminate its independent thread	destroyApp(false);	notifyDestroyed();    }    private Image createImage(String filename)    {        Image image = null;        try        {            image = Image.createImage(filename);        }        catch (IOException e)        {            // just let return value be null        }        return image;    }}