Write a program in java to calculate the difference between the sum of the odd level and even level nodes of a binary tree.
What is a short in java?
Can you pass by reference in java?
What is java and why do we need it? Explain
What are the advantages of user defined functions?
Is Java Class Threadsafe ????? How to make Java class Thread safe??
There can be a abstract class without abstract methods, but what is the need to declare a class abstract if it doesn't contain abstract methods?
Which is faster call by value or call by reference?
What are the different access modifiers available in java?
What are static methods?
what is meant by abstract class?
How can we make string upper case or lower case?
How is a variable stored in memory?