this key -- think in java notes

class Person{
public void eat(Apple apple){
Apple peeled = apple.getPeeled();  //apple.getPeeled() == Peeler.peel(apple) == apple
System.out.println("Yummy");
}
}

class Peeler{                               //削皮
static Apple peel(Apple apple){
return apple;
}
}

class Apple{
Apple getPeeled() { return Peeler.peel(this);}
}

public class TJ_5_41 {
public static void main(String[] args){
new Person().eat(new Apple());
}
}