?? objectconvert.java
字號:
class SuperClass{
private int x=100;
public int getx(){
return x;
}
}
class Subbie extends SuperClass{
private int y=200;
public int gety(){
return y;
}
}
public class ObjectConvert{
public static void main(String arg[]){
SuperClass superA=new SuperClass(),superB;
Subbie subA=new Subbie(),subB;
(new ObjectConvert()).useSubAsSuper(subA);
superB=subA;
System.out.println("superA.getx():"+superB.getx());
subB=(Subbie)superB;
System.out.println(subB.getx()+" "+subB.gety());
}
public void useSubAsSuper(SuperClass x){
System.out.println(x.getx()+"!!!!!!");
}
}
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -