BufferedOutputStream vs ByteArrayOutputStream

java io bytearrayoutputstream
Hank picture Hank · Jul 25, 2011 · Viewed 11.7k times · Source

Is there any advantage in wrapping a BufferedOutputStream around a ByteArrayOutputStream instead of just using the ByteArrrayOutputStream by itself?

Answer

Binus picture Binus · Jul 25, 2011

Generally BufferedOutputStream wrapper is mostly used to avoid frequent disk or network writes. It can be much more expensive to separately write a lot of small pieces than make several rather large operations. The ByteArrayOutputStream operates in memory, so I think the wrapping is pointless.

If you want to know the exact answer, try to create a simple performance-measuring application.

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