What's the main difference between arraylist / hashmap and vector / hashtable?
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Can you create an instance of an interface?
Do we require a parameter for constructors?
What is inheritance?
Explain basic concepts of OOPS?
What are the different principle of OOPS?
Give any criteria when you use an abstract class and an interface?
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what is the difference between the up phase and up workflows?
What are sealed modifiers?
Explain the term constructor
Why are outlet connections required in object-oriented programming?
What are all the languages which support oop?
Which oops concept exposes only necessary information to the calling functions?