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Editorial Team
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Asked: 2026-05-19T22:19:58+00:00

FileInputStream in = new FileInputStream(myFile); ByteArrayOutputStream out = new ByteArrayOutputStream(); Question: How can I

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FileInputStream in = new FileInputStream(myFile);
ByteArrayOutputStream out = new ByteArrayOutputStream();

Question: How can I read everything from in into out in a way which is not a hand-crafted loop with my own byte buffer?

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1 Answer

  1. Editorial Team

    Write one method to do this, and call it from everywhere which needs the functionality. Guava already has code for this, in ByteStreams.copy. I’m sure just about any other library with “general” IO functionality has it too, but Guava’s my first “go-to” library where possible. It rocks 🙂

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