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Composition Vs Inheritance

prasad bhn
Greenhorn

Joined: May 04, 2001
Posts: 28
Can anybody please explain me what is the difference between composition and inheritance.
I would appreciate the help from anybody.
Thanks in advance,
Prasad Bh.


prasad bhuvanam
Laojar Chuger
Ranch Hand

Joined: Dec 20, 2000
Posts: 111
Basically, composition implements the relationship of "has a" and inhertance implements the relationship "is a".
Cindy Glass
"The Hood"
Sheriff

Joined: Sep 29, 2000
Posts: 8521
Composition means that a class is composed of implementations of interfaces instead of inheriting those behaviors from some other class.


"JavaRanch, where the deer and the Certified play" - David O'Meara
David Roberts
Ranch Hand

Joined: Nov 03, 2000
Posts: 142
An example of composition is the attribute reference, ie.
composition:
public class A
{
AnotherClass B = new AnotherClass();
}
inheritance:
public class A extends B
{
}
or
public class A implements B
{
}

------------------
David Roberts - SCJP2,MCP


David Roberts - SCJP2,MCP
prasad bhn
Greenhorn

Joined: May 04, 2001
Posts: 28
Thanks for the replies friends.
Best Regards,
prasad bhn.
 
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