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Write a program in java to calculate the difference between the sum of the odd level and even level nodes of a binary tree.
Can we declare an interface as final?
How many types of constructors are used in java?
What is the difference between compile-time polymorphism and runtime polymorphism?
Can you use this() and super() both in a constructor?
What is an i/o filter?
What is the difference between serializable and externalizable interface?
Can we execute a program without main() method?
What is the difference between static binding and dynamic binding?
Can a class have an interface?
Can we override the static methods?
What do you understand by an io stream?
What is the purpose of a default constructor?
Can we override the overloaded method?
Can an interface have a class?
