Re: Vector vs. LinkedList

"Mike Schilling" <>
Fri, 19 Jan 2007 06:24:33 GMT
"Greg R. Broderick" <> wrote in

Hal Vaughan <> wrote in

I've read up on Vectors and LinkedLists. Other than slightly
different interfaces, I'm not clear on reasons for using one over
the other. Both can keep growing and can have members inserted or
removed as needed.

Is there a reason to use one over the other?

One complication that no one else has mentioned is that
java.util.vector is inherently synchronized, whereas
java.util.ArrayList and java.util.LinkedList are not. If you are
developing multithreaded code, then this should be a big

As long as we're on the subject, I'll mention that per-method
synchronization goes only so far. It's still possible that

    Vector v;
    for (int i = 0; i < v.size(); i++)
        Object o = v.get(i);

will throw an exception, say if another thread removes objects from the
vector between the call to size() and the call to get(). To guarantee
sensible behavior, it's necessary to synchronize the entire loop.

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