inheritance is funny

[Kalpesh Soni]

class Base{}
class Derived extends Base{}
class TestNow{
public static void main(String []args){
call(null);
//which one gets called
//hmmmmmmmmmmmmmmmmm
}
public static void call(Base b){
System.out.println("base");
}
public static void call(Derived d){
System.out.println("derived");
}
}

why does this happen ?
:-/
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KS

[shabbir zakir]

hi!
The code executes with the output derived. I think due latebinding the method call(null) executes mathod taking parameter of the subclass.Correct me if i am wrong.

[Kalpesh Soni]

Originally posted by shabbir zakir:
hi!
The code executes with the output derived. I think due latebinding the method call(null) executes mathod taking parameter of the subclass.Correct me if i am wrong.

late binding, without an object, in static method ??
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KS

[Cherry Mathew]

this question was anwered before in this forum if u want a detailed explanation search for that
The reason for this is java goes for more specific method
now try using two classes which are not related then u will get a compile time error bcoz java cant resolve this
Cherry

[Kalpesh Soni]

thanks cherry
but how will i find it

[Jane Griscti]

Hi Kalpesh,
Select the 'search' function at the top of the page, enter relevant keywords, for example: derived base class; then click 'Perform Search'.
You'll get a list of all the previous posts containing the same words; you can then browse through them.
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Jane Griscti
Sun Certified Java 2 Programmer