What is the purpose of garbage collection in java?
how to know the total memory occupied by the objects in the ArrayList(Array list may contain duplicate objects)
What is foreach loop in java?
How to implement an arraylist in java?
Can we declare array without size in java?
How will you calculate the depth of a binary tree if the tree contains 15 nodes?
What is the difference between Byte stream and Charecter Stream?
What are reference variables in java?
What is the difference between abstract class and interface1? What is an interface?
What is the main advantage of passing argument by reference?
What state is a thread in when it is executing?
How is string stored in java?
Can a class be defined inside an interface?