iアプリ

A

import com.nttdocomo.ui.IApplication;
import com.nttdocomo.ui.Display;

public class A extends IApplication(){
    punlic void start(){
        B b = new B();
        Display.setCurrent(b);
        b.exe();
    }
}

B

import com.nttdocomo.ui.*;

public class B extends Canvas{
    private final static int
        S_TITLE = 0,
        S_PLAY  = 1;

    static int keyEvent = -999;
    static int scene    = S_TITLE;
    static int init     = S_TITLE;
    static int index    = 0;

    void exe(){
        Graphics g = getGraphics();
        try{
            while(true){
                if(init >= 0){
                    if(init == S_TITLE){
                        setSoftLabel(SOFT_KEY_1,"");
                        setSoftLabel(SOFT_KEY_2,"");
                    }else
                    if(init == S_PLAY){
                        setSoftLabel(SOFT_KEY_1,"");
                        setSoftLabel(SOFT_KEY_2,"");
                    }
                    keyEvent = -999;
                    init = -9;
                }
                if(scene == S_TITLE){
                    //処理
                        //画面描画
                    //キー操作
                }else
                if(scene == S_PLAY){
                    //処理
                        //画面描画
                       //キー操作
                }
                Thread.sleep(1);
            }
       }catch(Exception e){}
    }

    public void processEvent(int type,int param){
        if(type == Display.KEY_PRESSED_EVENT){keyEvent = param;}
        if(type == Display.KEY_RELEASED_EVENT){keyEvent = -999;}
    }
    public void paint(Graphics g){}
}