What is Polymorphism? How is it implemented in Java?

What is Polymorphism? How is it implemented in Java?
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A: It literally means the ability to take ‘more than one forms’. The ability of a method to behave in more than one form is called polymorphism. In Java, it is implemented by method (function) overloading (compile time polymorphism) and method overriding (runtime polymorphism).
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