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OOAD Interview Questions
Questions Answers Views Company eMail

What are the types of polymorphism?

 959

What is inheritance in java?

 2 1251

What is abstract method?

 979

If there is a conflict between base class method definition and interface default method definition, which definition is picked?

 1 1837

Can we have default method with same name and signature in the derived interface as the static method in base interface and vice versa?

 1035

What if we make the method as abstract in another interface?

 962

What is the @functionalinterface annotation?

 935

Can we have a default method definition in the interface without specifying the keyword "default"?

 963

What is a nested interface?

 1038

If a method definition has been specified in the base class and the interface which the class is implementing, which definition will be picked if we try to access it using interface reference and class object?

 960

Can we use static method definitions in interfaces?

 1026

Can a class implement two interfaces having default method with same name and signature?

 1007

What if we override the conflicting method in the class?

 947

Can we override static methods? Why?

 941

Can we access interface static method using interface references?

 1059

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Un-Answered Questions { OOAD }

Explain the purpose of composition.

1029

What do you mean by data hiding?

1117

What is overriding?

1026

Differentiate between an abstract class and an interface?

978

Can a class implement two interfaces having default method with same name and signature?

1007

What is difference between encapsulation and abstraction?

992

What are manipulators?

1031

Explain about multiple inheritance?

1041

What is the difference between multiple and multilevel inheritance?

1004

What is an abstract property. Give an example?

943

Explain about uml?

957

What does the keyword virtual represented in the method definition?

1054

Why is java not fully objective oriented?

1056

What is the difference between an abstract class and interface in java?

998

What is a ternary operator?

950

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