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I have stream saved in ByteArrayOutputStream. now I want to to read that in FileInputStream. how Can I do that?

it's my outputStream.

... OutputStream out = new ByteArrayOutputStream(); ...

now how to read that, from FileInputStream?

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  • 2
    outputStreams are meant for writing, you can read from them Commented Jul 11, 2013 at 14:20
  • close the outputstream, and open the file with the fileinputstream? Commented Jul 11, 2013 at 14:21
  • Stream is in my memory - it's ByteArrayOutputStream. then I need FileInputStream variable, of that Stream. Commented Jul 11, 2013 at 14:22
  • I don't have file. I have ByteArrayOutputStream. Commented Jul 11, 2013 at 14:23

1 Answer 1

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You can create a ByteArrayInputStream with

InputStream is = new ByteArrayInputStream(bos.toByteArray());

and then read from this InputStream.

If your interface only accepts a FileInputStream then the interface is broken...

If, at all, an interface only works with files it should accept a File else it should use an InputStream.

Also if you use threads you can use PipedInputStream and PipedOutputStream directly between the threads.

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2 Comments

I need only FileInputStream. or I have byte array (byte [] variable) and I want to read from FileInputStream
+1 for "If your interface only accepts a FileInputStream then the interface is broken"