What is @functionalinterface?
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Why does java not support multiple inheritance?
What is data abstraction? what are the three levels of data abstraction with Example?
How a program can be structured using the concept of object oriented programming?
Can you call the base class method without creating an instance?
What are the various types of constructors?
What is the practical implementation of inner classes?
What is static polymorphism?
Difference Between Attribute and Association.
What are the rules to define a functional interface?
What is the benefit of using inheritance?
What are sealed modifiers?
Can you create an instance for an abstract class?