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Код


package hello;

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



public class Kernel extends MIDlet {
    protected Display display;
    private Image splashLogo;
    private boolean isSplash = true;
    private MainMenuScreen mainMenuScreen;
    private SettingsScreen settingsScreen;
    private HighScoreScreen highScoreScreen;
    private HelpScreen helpScreen;
    private AboutScreen aboutScreen;    
    public Kernel() {
   
        }
    public void startApp() {
        display = Display.getDisplay(this);
        mainMenuScreen = new MainMenuScreen(this);
        settingsScreen = new SettingsScreen(this);
        highScoreScreen = new HighScoreScreen(this);
        helpScreen = new HelpScreen(this);
        aboutScreen = new AboutScreen(this);
        if(isSplash) {
            isSplash = false;
            try {
                splashLogo = Image.createImage("/splash.png");
                new SplashScreen(display, mainMenuScreen, splashLogo,3000);
                } catch(Exception ex) {
                    mainMenuScreenShow();
                    }
            } else {
            mainMenuScreenShow();
            }
        }
    public Display getDisplay() {
        return display;
        }
    public void pauseApp() {
        }
    public void destroyApp(boolean unconditional) {
        System.gc();
        notifyDestroyed();
        }
    private Image createImage(String filename) {
        Image image = null;
        try {
            image = Image.createImage(filename);
            } catch (Exception e) {
                }return image;
                }
    public void mainMenuScreenShow() {
        display.setCurrent(mainMenuScreen);
        }
    public void settingsScreenShow() {
        display.setCurrent(settingsScreen);
        }
    public void highScoreScreenShow() {
        display.setCurrent(highScoreScreen);
        }
    public void helpScreenShow() {
        display.setCurrent(helpScreen);
        }
    public void aboutScreenShow() {
        display.setCurrent(aboutScreen);
        }
    public void mainMenuScreenQuit() {
        destroyApp(true);
        }
    }

Код


package hello;


import javax.microedition.lcdui.*;



public class MainMenuScreen extends List implements CommandListener {
  
    private Kernel midlet;
    private Command selectCommand = new Command("Select", Command.ITEM,1);
    private Command exitCommand = new Command("Exit", Command.EXIT,1);
    private Alert alert;
    public MainMenuScreen(Kernel midlet) {
       
        super("Name List",Choice.IMPLICIT);
        this.midlet = midlet;


      

    
        append(Locale.get( "menu.StartGame"),null);
        
        append(Locale.get( "menu.LoadGame"),null);
      
        append(Locale.get( "menu.Highscore"), null);
   
        append(Locale.get( "menu.Quit"),null);
       
        append(Locale.get( "menu.Help"),null);
        addCommand(exitCommand);
        addCommand(selectCommand);
        setCommandListener(this);
        }
    public void commandAction(Command c, Displayable d) {
        if (c == exitCommand) {
            midlet.mainMenuScreenQuit();
            } else if (c == selectCommand) {
            processMenu();
            } else {
            processMenu();
            }
        }
    
    private void processMenu() {
        try {
               List down = (List)midlet.display.getCurrent();
            switch (down.getSelectedIndex()) {
                case 0: scnNewGame(); break;
                case 1: scnSettings(); break;
                case 2: scnHighScore(); break;
                case 3: scnHelp(); break;
                case 4: scnAbout(); break;
                };
                } catch (Exception ex) {
                    // Proper Error Handling should be done here
                    System.out.println("processMenu::"+ex);
                    }
        }
    private void scnNewGame() {
        midlet.mainMenuScreenShow();
        }
    private void scnSettings() {
        midlet.settingsScreenShow();
        }
    private void scnHighScore() {
        midlet.highScoreScreenShow();
        }
    private void scnHelp() {
        midlet.helpScreenShow();
        }
    private void scnAbout() {
        midlet.aboutScreenShow();
        }
    }