What is the difference between class and interface?
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What is difference between class and interface?
What is @functionalinterface?
What is the difference between new and override?
Explain what an object is.
What is the abstract method modifier?
Explain basic concepts of OOPS?
Explain about the relationship between object oriented programming and databases?
What are the interfaces you used in beans?
Explain the concept of multiple inheritance (virtual inheritance). Write about its advantages and disadvantages?
Is @functionalinterface annotation mandatory to define a functional interface? What is the use of @functionalinterface annotation? Why do we need functional interfaces in java?
Can encapsulation be called as a security device?
What are inner classes and what is the practical implementation of inner classes?