What do you mean by Hash Map and Hash Table?
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How to create two different thread class inside a main function?
What is operator?
What is string in java?
How do you control extraneous variables?
How do generics work in java?
what is run time polymorphism
Why method overloading and method overriding required in java?
whether java is fully object oriented language or partially object oriented language
what is a thread pool in java and why is it used?
What is java volatile?
Explain wait(), notify() and notifyall() methods of object class ?
What if the main() method is declared as private? What happens when the static modifier is removed from the signature of the main() method?