How to call parent method from subclass (two level up) ?
Hi.
I have a problem ... I want to call a parent method from subclass(two level up) and(or) directly from object. Below my example ...
--
class A {
protected int var = 1;
public String method() {
return "A";
}
}
class B extends A {
protected int var = 2;
@Override
public String method() {
return "B";
}
}
class C extends B {
protected int var = 3;
@Override
public String method() {
return "C";
}
public String otherMethod() {
return ((A)this).method();
}
}
/** Main class. */
public class Main {
public static void main(String[] args) {
C c = new C();
System.out.println("c.var = " + c.var);
System.out.println("((A)c).var = " + ((A)c).var);
System.out.println("c.method() = " + c.method());
System.out.println("((A)c).method() = " + ((A)c).method());//Polymorphism - will print C
System.out.println("c.otherMethod = " + c.otherMethod());//Polymorphism - will print C
}
}
--
Output:
c.var = 3
((A)c).var = 1
c.method() = C
((A)c).method() = C
c.otherMethod = C
--
I want that two last lines call "A.method()", something like ((A)c).var. Does it even possible? If yes, then how to do it?
Cheers,
Marek
[1392 byte] By [
MarekKa] at [2007-11-26 20:30:19]
Normally you don't want to do that! But if you must, try this:
class A {
protected int var = 1;
public String method() {
return methodImplA();
}
protected final String methodImplA() {
return "A";
}
}
class B extends A {
protected int var = 2;
@Override
public String method() {
return "B";
}
}
class C extends B {
protected int var = 3;
@Override
public String method() {
return "C";
}
public String otherMethod() {
return methodImplA();
}
}
/** Main class. */
public class Main {
public static void main(String[] args) {
C c = new C();
System.out.println("c.var = " + c.var);
System.out.println("((A)c).var = " + ((A)c).var);
System.out.println("c.method() = " + c.method());
System.out.println("((A)c).method() = " + ((A)c).method());//Polymorphism - will print C
System.out.println("c.otherMethod = " + c.otherMethod());//Polymorphism - will print C
}
}
Well I have a situation similar to this:
class A {
@Override
public String toString() {
return "A";
}
}
class B extends A {
@Override
public String toString() {
return "B";
}
}
/** Main class. */
public class Main {
public static void main(String[] args) {
A a = new B();
System.out.println("a = " + a);
}
}
and I wanted to call Object.toString() on "a" just for debug.
At the end I simply log a.getClass() and Integer.toHexString(a.hashCode()) :-)
