Shulou(Shulou.com)06/01 Report--

This article mainly shows you "how to copy files through the JAVA NIO direct buffer", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and learn "how to copy files through the JAVA NIO direct buffer" this article.

Copy files through the JAVA NIO direct buffer

/ * copy files (memory mapped files) via JAVA NIO direct buffer * * @ param sourcePath source file path * @ param targetPath destination file path * / public static void copyFileByChannelBufferd (String sourcePath, String targetPath) {FileChannel inChannel = null; FileChannel outChannel = null Try {/ / get channel, StandardOpenOption.READ means readable, StandardOpenOption.WRITE means writable, StandardOpenOption.CREATE means you can create inChannel = FileChannel.open (Paths.get (sourcePath), StandardOpenOption.READ); outChannel = FileChannel.open (Paths.get (targetPath), StandardOpenOption.WRITE, StandardOpenOption.READ, StandardOpenOption.CREATE); / / create memory mapping file MappedByteBuffer inMapped = inChannel.map (FileChannel.MapMode.READ_ONLY, 0, inChannel.size ()) MappedByteBuffer outMapped = outChannel.map (FileChannel.MapMode.READ_WRITE, 0, inChannel.size ()); / / directly manipulate the memory mapping file byte [] buf = new byte [inMapped.limit ()]; inMapped.get (buf); outMapped.put (buf);} catch (IOException e) {e.printStackTrace () } finally {/ / close stream try {if (outChannel! = null) {outChannel.close ();} if (inChannel! = null) {inChannel.close ();}} catch (IOException e) {e.printStackTrace () } the above is all the contents of the article "how to copy files directly through the JAVA NIO buffer". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.