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How can you forbid the instantiation of a given class ?
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12
Overrided method visibility must be the same or less restrictive than the inherited method.5
When can you do a+b in OOP ?7
Can a class implements several interfaces ?10
Inheritance in OOP.4
Explain the difference between overriding and overloading in OOP.4
What does the following code return ?3
Which modification of the following code WILL NOT make the output be "success" ?