package Blocks;//鍚庣畫錛氫紶鍥炲弬鏁幫紝淇濆瓨import javax.microedition.lcdui.*;public class LevelCanvas extends Canvas implements CommandListener, ItemStateListener {    public Display dis;    public Displayable disp;    public Command back;    public Form form;    public ChoiceGroup choicegroup;    public Midlet midlet;        public LevelCanvas(Display dis, Displayable disp, Midlet midlet) {        this.dis = dis;        this.disp = disp;        this.midlet = midlet;        String[] string ={            "綆