What is the @functionalinterface annotation?
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What is composition? Explain the purpose of composition.
What if we make the method as abstract in another interface?
What is meant by “abstract interface”?
What is diamond inheritance problem? How java 8 solves this problem?
Which OOPS concept exposes only the necessary information to the calling functions?
What is the syntax of object oriented method call?
What is data abstraction? what are the three levels of data abstraction with Example?
What is the difference between oop and sop?
What is inheritance?
What is the difference between class inheritance and interface inheritance?
What interface must an object implement before it can be written to a stream as an object?
What is meant by function overloading and function overriding?