BufferedOutputStream vs ByteArrayOutputStream

Question

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

score 20 · Accepted Answer · answered Jul 25 '11 at 20:32

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.

score 2 · Answer 2 · answered Jul 25 '11 at 20:52

2

Absolutely none. Though BufferedWriter and BufferedReader do offer extra functionality were you to be operating on strings.

answered Jul 25 '11 at 20:52

Dunes

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score 0 · Answer 3 · answered Feb 21 '16 at 19:24

ByteArrayOutputStream is not recommended if you want to get high performance, but one interesting feature is to send a message with unknown length. For a better comprehension about how these two methods work, see http://java-performance.info/java-io-bytearrayoutputstream/.

BufferedOutputStream vs ByteArrayOutputStream

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