Explain OOPs concept.
What are java packages? What is the significance of packages?
In how many ways we can do exception handling in java?
What an i/o filter in java programming?
how we can create packages in java?
Explain list interface?
What is constant in programming?
What do you mean by constant time complexity?
What is singleton class and how can we make a class singleton?
I want to persist data of objects for later use. What is the best approach to do so?
Why runnable interface is used in java?
Define inheritance?
Give me some null interfaces in java?
What is an accessor?
Why do we need singleton class?