Java: ArrayList Methods()

How to use add() method to add an object in an ArrayList? How to use add() method to add an object at a specific index in an ArrayList? How to use remove() method to remove a specific object in an ArrayList? How to use remove() method to remove an object at a specific index in an ArrayList? How to use get() to return an object in an ArrayList? How to use set() to replace an existing object in an ArrayList? How to use size() to know the size of an ArrayList?

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