Is array passed by reference in java?
What is the use of StringTokenizer class?
Is age discrete or continuous?
Explain the difference between comparator and comparable in java?
How hashset works internally in java?
Explain the difference between abstract classes and interfaces in java?
How do you differentiate abstract class from interface?
What are the elements of java?
Explain about OOPS concepts and fundamentals.
Explain Big-O notation with an example
What is a java string?
when everything can be done by static block then why do we use main method?.
Do you know thread pools?