You could declare your confFile as File instead of Path. Then you can use confFile.getParentFile().mkdirs();, see example below: // … File confFile = new File(“./conf/conf.xml”); confFile.getParentFile().mkdirs(); // … Or, using your code as is, you can use: Files.createDirectories(confFile.getParent());
The documentation seems pretty clear to me: Creation of a buffer It is recommended to create a new buffer using the helper methods in Unpooled rather than calling an individual implementation’s constructor. Then in Unpooled, you’ve got options of wrapping or copying. For example: Unpooled.copiedBuffer(ByteBuffer) Unpooled.copiedBuffer(byte[]) Unpooled.wrappedBuffer(ByteBuffer) Unpooled.wrappedBuffer(byte[]) Choose whichever method is appropriate based on … Read more
I think the deep copy need not involve byte[]. Try the following: public static ByteBuffer clone(ByteBuffer original) { ByteBuffer clone = ByteBuffer.allocate(original.capacity()); original.rewind();//copy from the beginning clone.put(original); original.rewind(); clone.flip(); return clone; }
From the source code, they are very similar. You can see the follow: public final Buffer flip() { limit = position; position = 0; mark = -1; return this; } public final Buffer rewind() { position = 0; mark = -1; return this; } So the difference is the flip set the limit to the … Read more
I am a big fan of Java’s MappedByteBuffers for situations like this. It is blazing fast. Below is a snippet I put together for you that maps a buffer to the file, seeks to the middle, and then searches backwards to a newline character. This should be enough to get you going? I have similar … Read more
I have the same issue trying to watch a mounted windows share via CIFS. It seems not possible to get filesystem events for CIFS mounts. The linux implementation of the Java 7 NIO FileWatcher uses inotify. Inotify is a linux kernel subsystem to notice filesystem changes which works perfect for local directories, but apparently not … Read more
How ByteBuffer works and why Direct (Byte)Buffers are the only truly useful now. first I am a bit surprised it’s not common knowledge but bear it w/ me Direct byte buffers allocate an address outside the java heap. This is utmost importance: all OS (and native C) functions can utilize that address w/o locking the … Read more
It seems like what you’re really trying to do is accomplish what FTP does – copy files from one place to another. I would suggest you find better ways to do this with existing FTP code libraries. URIs are not file system paths, so you can’t treat them as such. They are addresses/resource locators that, … Read more
To change the file name of a Path, use one of the resolveSibling() methods: This is useful where a file name needs to be replaced with another file name. Using this method ensures that the result Path object is for the same FileSystem as the source Path object. So, to add extension “.bar” to a … Read more
The documentation that you linked give the answer: The java.nio.file package defines interfaces and classes for the Java virtual machine to access files, file attributes, and file systems. This API may be used to overcome many of the limitations of the java.io.File class. The toPath method may be used to obtain a Path that uses … Read more