What does Collections.emptySet() return?(a) Immutable Set(b) Mutable Set(c) The type of Set depends on the parameter passed to the emptySet() method(d) Null object

What does Collections.emptySet() return?(a) Immutable Set(b) Mutable S

1.	What does Collections.emptySet() return?(a) Immutable Set(b) Mutable Set(c) The type of Set depends on the parameter passed to the emptySet() method(d) Null object
Answer» Correct option is (a) Immutable Set To explain I would say: Immutable Set is useful in multithreaded environment. One does not need to declare generic type collection. It is inferred by the context of method call.

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What does Collections.emptySet() return?(a) Immutable Set(b) Mutable Set(c) The type of Set depends on the parameter passed to the emptySet() method(d) Null object

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