NIO benefits should be taken with a grain of salt. In a HTTP server, most connections are keep-alive connections, they are idle most of times. It would be a waste of resource to pre-allocate a thread for each. For MMORPG things are very different. I guess connections are constantly busy receiving instructions from users and … Read more
You need to convert the found resource to URI. It works on all platforms and protects you from possible errors with paths. You must not worry about how full path looks like, whether it starts with ‘\’ or other symbols. If you think about such details – you do something wrong. ClassLoader classloader = Thread.currentThread().getContextClassLoader(); … Read more
WatcherServices reports events twice because the underlying file is updated twice. Once for the content and once for the file modified time. These events happen within a short time span. To solve this, sleep between the poll() or take() calls and the key.pollEvents() call. For example: @Override @SuppressWarnings( “SleepWhileInLoop” ) public void run() { setListening( … Read more
Java 8 provides a nice way for that: Files.walk(path) This method returns Stream<Path>.
For example in UNIX, a regular file is one that is not special in some way. Special files include symbolic links and directories. A regular file is a sequence of bytes stored permanently in a file system. Read this answer @ UNIX & Linux stackexchange: What is a regular file? I figure rm -i is … Read more
UPDATED: Since Java11 there is a specific method to write strings using java.nio.file.Files: Files.writeString(Paths.get(file.toURI()), “My string to save”); We can also customize the writing with: Files.writeString(Paths.get(file.toURI()), “My string to save”, StandardCharsets.UTF_8, StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING); ORIGINAL ANSWER: There is a one-line solution, using Java nio: java.nio.file.Files.write(Paths.get(file.toURI()), “My string to save”.getBytes(StandardCharsets.UTF_8), StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING); I have not benchmarked this … Read more
problem is that Paths.get() doesnt expect that kind of value which is generated from uri.getPath(). Solution: URI uri = ClassLoader.getSystemResource(“com/stackoverflow/json”).toURI(); String mainPath = Paths.get(uri).toString(); Path path = Paths.get(mainPath ,”Movie.class”);
The main difference between IO and NIO is that IO is blocking, while NIO is non-blocking. This article explains the differences in the packages and what blocking and non-blocking IO is. archived
I have much better response times if I change folder.register(watcher, StandardWatchEventKinds.ENTRY_MODIFY); to folder.register(watcher, new WatchEvent.Kind[]{StandardWatchEventKinds.ENTRY_MODIFY}, SensitivityWatchEventModifier.HIGH);
Use Files.size(Path) to get the size of a file. For the size of a directory (meaning the size of all files contained in it), you still need to recurse manually, as far as I know.