What is an object in java?
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Explain the usage of this with constructors?
what is polymorphism?
What is the size of arraylist in java?
What is emant by API? is it related to java only or it is common for all OOPS supporting language?
Explain the importance of throws keyword in java?
Is empty set an element of empty set?
what is difference between global methods and local methods?
What is compareto () in java?
Which is illegal identifier in java?
What are recursive functions?
How do you implement tree mirroring in java?
explain different ways of using thread? : Java thread