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|Java - Interview Questions and Answers|
|Frequently asked to fresh graduates and less experienced.|
|Ans. Inheritance means a object inheriting reusable properties of the base class. Compositions means that an abject holds other objects. |
In Inheritance there is only one object in memory ( derived object ) whereas in Composition , parent object holds references of all composed objects.
From Design perspective - Inheritance is "is a" relationship among objects whereas Composition is "has a" relationship among objects.
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Try 2 Question(s) Test
|What are the difference between composition and inheritance in Java?|
| Explain OOPs |
Explain OOPs Principles
Explain OOPs Concepts
Explain OOPs features
Tell me something about OOPs
|What is the difference between Encapsulation and Abstraction?|
|What are points to consider in terms of access modifier when we are overriding any method?|
|What is Polymorphism in Java ?|
|Can you give a real world example of Encapsulation and Abstraction ?|
|Why every object constructor automatically call super() in Object before its own constructors?|
|Difference between Overloading and Overriding ?|
|How compiler handles the exceptions in overriding ?|