1.Format:Kobe kb24=(Kobe)ai;
即为将ai转换成Kobe类型的对象;
2.e.g.
public class Superman{
public static void main(String[] args) {
Superman chunhe =new Superman();
Iverson schwin=new Iverson();
chunhe.bball(schwin);
}
public void bball(Kobe kb24){
if(kb24 instanceof Iverson){
Iverson ai=(Iverson)kb24;
ai.slamdunk();
}
}
}
class Kobe{
}
class Iverson extends Kobe{
public void slamdunk(){
System.out.println("SALUTE 老科AI");
}
}
编译运行'
SALUTE 老科AI