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Java Class Q&A
1.abstract class
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Java Class Q&A » Inheritance » aggregate 

1. Clarification required - Design Patterns    stackoverflow.com

In most of the design patterns concepts, it was mentioned that "Has A" is better than "Is A" means. In the first chapter - Head First Design Patterns - "Intro to ...

2. Inheritance vs Aggregation    coderanch.com

Hi Folks, Polymorphism can be acheived by two means: 1.Inheritance is-a relationship 2.Aggregation has-a relationship Inheritance is achieved by extending the existing class using the extends clause and Aggregation is by declaring a object of a class as a member in another class. I need some clarifications on when and where to use inheritance and aggregation. Please provide me with some ...

3. Aggregation vs. Inheritance    coderanch.com

It is like comparing apples and oranges. Aggregation is usually described in the text books as "has a". Inheritance is usually described as "is a". An example of this is Class Car "is a" Vehicle. Thus Car would inherit from Vehicle. However Class Car "has a" Engine. Thus Engine is an aggregate of Car. You can never say an Engine "is ...

4. Composition,Aggregation,Delegation,Inheritance...!!!    coderanch.com

5. inheritance and aggregation    forums.oracle.com

6. Exact difference betwteen aggregation and Inheritance with example    forums.oracle.com

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