What is the benefit of lambda expressions?
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Write a program to calculate factorial in java?
what is abstract class in Java?
What is thread?
Can we declare array without size in java?
What does 0 mean in boolean?
What is the importance of hashcode() and equals() methods?
What is meant by design patterns?
What does nullpointerexception mean?
How is it possible for two string objects with identical values not to be equal under the == operator?
What are heterogeneous objects?
Explain OOPs concept.
Which one will take more memory: an int or integer?