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What are the differences between these two data structures and where should you use each of them?

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did you tried to read java generics? – Zagorulkin Dmitry Jul 2 '12 at 10:15
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Think of vectors as resizable arrays. Vectors are dynamically-allocated. Vectors are represneted internally using arrays. See stackoverflow.com/questions/2871775/j2me-arrays-vs-vector – Emmad Kareem Jul 2 '12 at 10:29

closed as off topic by maple_shaft♦ Jul 2 '12 at 11:36

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2 Answers

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the primitive array (declared as Object[]) has a fixed size and isn't that usefull outside using APIs of libraries using them or a quick temporary

the Vector (declared as Vector<Object>) is a legacy class representing a variable size array and again not usefull outside the library APIs

what you should use is the ArrayList (declared as ArrayList<Object but you should use the List interface) this is also a variable size array and is a bit more efficient as it doesn't have needless thread safety overhead Vector has

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up vote -1 down vote

just look at the docs, and don't use either btw, use something from the collections library

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-1 for "RTFM". Thanks, but don't really need that here. – DeadMG Jul 2 '12 at 10:43