Using FileChannel to write any InputStream?

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I'm using java.nio.channels. FileChannel to open a file and lock it, then writing a InputStream to the output file. The InputStream may be opened by another file, URL, socket, or anything.

I've write the following codes: FileOutputStream outputStream = new FileOutputStream(outputFile); FileChannel outputChannel = outputStream.getChannel(); FileLock lock = outputChannel.lock(); try { outputChannel. TransferFrom(?); } finally { lock.release(); outputChannel.close(); outputStream.close(); } However, the first argument of outputChannel. TransferFrom(...) requests a ReadableByteChannel object.

Since I an using a InputStream as input, it do not have inputStream.getChannel() method to create the required channel. Is there any way to get a ReadableByteChannel from a InputStream? Java inputstream filelock filechannel link|improve this question asked Jul 8 '11 at 2:53KiKi786 86% accept rate.

You can use ReadableByteChannel readableChannel = Channels. NewChannel(myinputstream).

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