What are sealed modifiers?
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Are constructors inherited? Can a subclass call the parent's class constructor? When?
Explain the concept of multiple inheritance (virtual inheritance). Write about its advantages and disadvantages?
What is a default method? Why do we need default methods in java 8 interfaces?
How do I make sure that an object is released in code such as a connection or file object?
What is the difference between class and interface?
Do we require a parameter for constructors?
Why is message passing between the objects important?
Which of the following is tightly bound ? Inheritance or composition ?
Is iterator a class or interface? What is its use?
Can we have a default method definition in the interface without specifying the keyword "default"?
How to define an abstract class?
What is data abstraction? what are the three levels of data abstraction with Example?