1st round: Coding with MCQ questions.

2nd round: Technical interview.

The interviewer started from the basics and went in-depth into Java.

You should have in-depth knowledge of the language you work on.

1. Questions on Multithreading:

   • How to spawn all threads at the same time.
   • How to start a thread from different classes.
   • How would you create 100 threads?

2. Questions on Collections:

   • The difference between a list and a set.
   • Unordered vs. ordered maps.
   • Which map offers insertion order?
   • Calculate the size of the set and list.
   • Custom questions they asked.

3. Exception Handling:

   • Parent class of Exception.
   • Compile-time exception vs. runtime exception.
   • IO exception questions related to files.
   • Custom exceptions.
   • Use of the throw keyword.
   • An example of compile-time exceptions.

4. OOPs Concepts:

   • Encapsulation, inheritance, polymorphism.
   • Ask to show examples of method overriding.
   • Few basic depth questions on method overriding.
   • If a static method can be overloaded.
   • What is method shadowing?
   • Where is the equals method defined in Java?