What is the @functionalinterface annotation?
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Explain the purpose of composition.
What is the @functionalinterface annotation?
Tell me something about abstract classes?
Define exceptions?
Difference between Composition and Aggregation
What is a friend function?
what is the difference between the up phase and up workflows?
What is bootstrap, extension and system class loader?
Explain what an object is.
How do I make sure that an object is released in code such as a connection or file object?
What is a default method? Why do we need default methods in java 8 interfaces?
How will you define abstract classes?