How to avoid OutOfMemoryError when using Bytebuffers and NIO?

Question

I use ByteBuffersand FileChannelswrite binary data to a file. When you do this for large files or sequentially for multiple files, I get an exception OutOfMemoryError. I read elsewhere that use ByteBufferswith NIO is impaired and should be avoided. Have any of you already encountered such a problem and found a solution for efficiently saving large amounts of binary data in a file in java?

Is jvm option possible -XX:MaxDirectMemorySize?

Answer 1

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Answer 2

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Kirk Pepperdine ( Java) - www.JavaPerformanceTuning.com, MBB: NIO

Answer 3

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Answer 4

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Answer 5

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Answer 6

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The workaround is to use a small number of direct buffers yourself and save them for reuse.