Technical Interview Questions

OOPS

 Why Java doesn't support multiple inheritance?
 When can an object reference be cast to an interface reference?
 What is marker interface?
  Can an Interface be final?
 Can you declare an interface method static?
 Can there be any abstract method without abstract class?
 What is the difference between abstraction and encapsulation?
  What is abstraction?
 What is the difference between static binding and dynamic binding?
 What is the difference between static binding and dynamic binding?
 Can you achieve Runtime Polymorphism by data members?
 What is Runtime Polymorphism?
 What is the difference between an Interface and an Abstract class?
 What is an interface?
 What is an abstract method?
 What is an abstract class?
 Can we have virtual functions in Java?
 Difference between method Overloading and Overriding.
 Can we override the overloaded method?
 Why we cannot override static method?
 Can we override static method?
 What is method overriding?
 Can we overload main() method?
 Why method overloading is not possible by changing the return type in java?
 What is method overloading?
 What is early and late binding?
 What is sealed modifiers?
 What are tokens?
 What is Inline function?
 What are manipulators?
 What are the Object Characteristics?
 What is Dependency?
 What is the meaning of "IS-A" and "HAS-A" relationship?
 What is the diamond problem in inheritance?
 What is the difference between Procedural programming and OOPS?
 What are the advantages of OOPS concepts?
 What is the 5 objects oriented design principle from SOLID?
 What is the difference between Association, Aggregation, and Composition in OOP?
 What is the difference between State and Strategy Pattern?
 Which OOP concept Decorator design Pattern is based upon?
 What problem is solved by Strategy pattern in Java?
 Can a class extend more than one class in Java?
 Can an interface extend more than one interface in Java?
 Can we have a non-abstract method inside interface?
 What is the default method of Java 8?
 Can we override a method which throws runtime exception without throws clause?
 Can we change the return type of method to subclass while overriding?
 Can we override a private method in Java?
 Can we prevent overriding a method without using the final modifier?
 Is Java a pure object oriented language? if not why?
 What is method hiding?
 What is Aggregation?
 What is Association?
 Why we can't create object for abstract class.
 Why we can't create object for abstract class.
 Why we can't create object for abstract class.
 Why we can't create object for abstract class.
 Why we can't create object for abstract class.
 Why we can't create object for abstract class.
 Why we can't create object for abstract class.
 Why we can't create object for abstract class.
 Why we can't create object for abstract class.

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