Introducing NIO.2 (JSR 203) Part 3: File System Attributes and Permissions support in NIO.2

 In two previous entries I covered Introducing NIO.2 (JSR 203) Part 1: What are new features?  and Introducing NIO.2 (JSR 203) Part 2: The Basics  In this entry I will discuss Attributes introduced in NIO.2. Using attributes we can read platform specific attributes of an element in the file system. For example to hide a file system in DOS file system or to check the last access date of a file in a UNIX machine. Using NIO.2 we can check which attributes are supported in the platform we are running on and then we can decide how to deal with the available attributes. Following sample code shows how we can detect the available attributes and then how to manipulate them. FileSystem fs = FileSystems.getDefault(); Path p = fs.getPath("/home/masoud/netbeans-6.9-ml-linux.sh"); //checking available attributes: Set supportedViews = fs.supportedFileAttributeViews(); //We always have at least one member in the set, the basic view. BasicFileAttributes ba = p.getFileAttributeView(BasicFileAttributeView.class, LinkOption.NOFOLLOW_LINKS).readAttributes(); //Printing some basic attributes System.out.println(p.toString() + " last access: " + ba.lastAccessTime()); System.out.println(p.toString() + " last modified " + ba.lastModifiedTime()); // As I know I am in NIX machine I access the unix attributes. // If I didnt I should have iterate over the set to determine which // attributes are su...

Date: June, 23 2010
Url: http://www.java.net/blog/kalali/archive/2010/06/23/introducing-nio2-jsr-203-part-3-file-system-attributes-and-permission

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