What is the numeric promotion?
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When finalize method is called?
What are extraneous variables examples?
What is object class in java?
Why Set interface contains unique elements, what internally implemented for this so that it contains unique elements?
Which class contains a method: cloneable or object?
How do you calculate square roots?
Explain OOPs concept.
when asub class inherits a super class and overrides a public method of super class in sub class(public method in super class). why these methods needs to be public in sub class. (otherwise compile time error).
Does list maintain insertion order java?
What is use of map in java?
Discuss 2D arrays.
To what value is a variable of the Boolean type automatically initialized?