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Can we create abstract methods in a non-abstract class ?
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3
What does the following code return ?3
Which modification of the following code WILL NOT make the output be "success" ?4
When can you do a+b in OOP ?6
Can a class implements several interfaces ?9
Inheritance in OOP.11
Overrided method visibility must be the same or less restrictive than the inherited method.3
Explain the difference between overriding and overloading in OOP.