36 lines
852 B
Java
36 lines
852 B
Java
//: references/HorrorFlick.java
|
|
// ©2015 MindView LLC: see Copyright.txt
|
|
// You can insert Cloneability
|
|
// at any level of inheritance.
|
|
|
|
class Person {}
|
|
|
|
class Hero extends Person {}
|
|
|
|
class Scientist extends Person
|
|
implements Cloneable {
|
|
public Object clone() {
|
|
try {
|
|
return super.clone();
|
|
} catch(CloneNotSupportedException e) {
|
|
// Should never happen; it's Cloneable:
|
|
throw new RuntimeException(e);
|
|
}
|
|
}
|
|
}
|
|
|
|
class MadScientist extends Scientist {}
|
|
|
|
public class HorrorFlick {
|
|
public static void main(String[] args) {
|
|
Person p = new Person();
|
|
Hero h = new Hero();
|
|
Scientist s = new Scientist();
|
|
MadScientist m = new MadScientist();
|
|
//! p = (Person)p.clone(); // Compile error
|
|
//! h = (Hero)h.clone(); // Compile error
|
|
s = (Scientist)s.clone();
|
|
m = (MadScientist)m.clone();
|
|
}
|
|
} ///:~
|