Main method must be made static 

File.exists() are used to check whether the file exists or not 

Interface is collection of _______ methods and constants.

Which of this method is used for object cloning?

In the following code snippet, which lines of code contain an error?

Which of the following function is used to sort an array

How many threads can be executed concurrently in Java?

What does HQL stand for?

What is the process by which we can control the visibility and accessibility of the members of a class?

What is aggregation in Java?