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Interview Questions and Answers for 'Doximity' - 1 question(s) found - Order By Rating | ||||
Frequently asked to fresh graduates and less experienced developers. Among the first few questions in many interviews. | ||||
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Ans. Composition - has-a relationship between objects. Inheritance - is-a relationship between classes. Composition - Composing object holds a reference to composed objects and hence relationship is loosely bound. Inheritance - Derived object carries the base class definition in itself and hence its tightly bound. Composition - Used in Dependency Injection Inheritance - Used in Runtime Polymorphism Composition - Single class objects can be composed within multiple classes. Inheritance - Single class can only inherit 1 Class. Composition - Its the relationship between objects. Inheritance - Its the relationship between classes. | ||||
Sample Code for inheritance Sample Code for composition | ||||
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Related Questions | ||||
Difference between Composition and Inheritance ? | ||||
Which of the following Java feature promotes access protection or Hiding ? a. Inheritance b. Encapsulation c. Abstraction d. Composition | ||||
Which of the following is tightly bound ? Inheritance or Composition ? | ||||
Can we compose the Parent Class object like this ? | ||||
Does use of Final class enforces composition over Inheritance in Java ? | ||||
Which of the following Java features facilitates Dependency Injection - Inheritance or Composition ? | ||||
How are the concept of Association related to Composition and Inheritance ? | ||||
Is dependency injection possible if we don't have inheritance / Composition ? | ||||
What is composition ? | ||||