????????????д????????? Test ??????????????????
?????????? Test ???￡?
public class Test{
public static final int THINKPAD = 0;
public static final int MOUSE = 1;
public static final int KEYBOARD = 2;
public static void main(String[] args){
//????????
ShopCar shopcar = new ShopCar();
shopcar.add(new Thinkpad());
shopcar.add(new Mouse());
shopcar.add(new Keyboard());
//?????С
System.out.println("?????????????????? ——> "+shopcar.getSize());
//???????thinkpad????
Thinkpad thinkpad = (Thinkpad)shopcar.getListItem(THINKPAD);
thinkpad.boot();
thinkpad.program();
System.out.println("-------------------");
//???????Mouse???
Mouse mouse = (Mouse)shopcar.getListItem(MOUSE);
mouse.move();
mouse.onClick();
System.out.println("-------------------");
//???????Keyboard????
Keyboard keyboard = (Keyboard)shopcar.getListItem(KEYBOARD);
keyboard.input();
}
}
????????????????
????//???????thinkpad????
????Thinkpad thinkpad = (Thinkpad)shopcar.getListItem(THINKPAD);
????thinkpad.boot();
????thinkpad.program();
????shopcar.getListItem(THINKPAD) ????????????Electronics??????????????Thinkpad?????
????????????????????????????
????Thinkpad thinkpad = (Thinkpad)shopcar.getListItem(THINKPAD);
??????????????????????????????????????????????boot ??program??
?????????°?????????????????????????????????????????????????仰???????
??????????????????Thinkpad??????Mouse???KeyBoard?????????????????????Shopcar?????????
????????????????????????????????????????????????????????????????????????????????????????Щ????????????????????????????????Electronics?????????
?????????????????????????????????????????????????????????????????????????????????????????????????????
???????????????????????????????????????????????????????????????????????????????????????
??????????Java?????и????????????????????????????????????????????????
????????????????????????????????????????????ó?????????????????????????????????????
????……
????????????java????????????????????????????????????
????????????java??????????????Java????????????????
????????Android?????У???????Layout????У???xmlд?????????????Activity?????????? findViewById() ????????????? findViewById(R.id.textview) ????????TextView??id?????????TextView??????? Java ??????????????