Is iterator a class or interface? What is its use?
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What if we make the method as abstract in another interface?
What is the difference between an interface and abstract class?
Explain what a method is?
What is inheritance?
What is the diffrence between an abstract class and interface?
What is the @functionalinterface annotation?
How to resolve many to many relationship?
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What is the difference between an abstract class and interface in java?
Define exceptions?
A class inherits from 2 interfaces and both the interfaces have the same method name as shown below. How should the class implement the drive method for both car and bus interface?
How many methods do u implement if implement the serializable interface?
Is is possible to define our own functional interface?
Design Patterns 
