NIO: Con Windows 8 funzione mentre con Ubuntu no! :(

[giannino1995]

Perché il codice seguente gira solo su Windows 8 e non su Ubuntu? Sul libro c'è scritto di provare a sostituire Basis con Posix ma non c'è verso. Il file test si trova in un disco dedicato solo al salvataggio dei dati e partizionato con file NTFS.

// Obtain information about a path and a file. 
// Requires JDK 7 or later.  
  
import java.io.*;  
import java.nio.file.*;  
import java.nio.file.attribute.*;  
  
class Esempio {  
  public static void main(String args[]) {  
    Path filepath = Paths.get("examples\\test.txt");  
  
    System.out.println("File Name: " + filepath.getName(1));  
    System.out.println("Path: " + filepath);  
    System.out.println("Absolute Path: " + filepath.toAbsolutePath());  
    System.out.println("Parent: " + filepath.getParent());  
  
    if(Files.exists(filepath))  
      System.out.println("File exists");  
    else  
      System.out.println("File does not exist");  
  
    try {  
      if(Files.isHidden(filepath))  
        System.out.println("File is hidden");  
      else  
        System.out.println("File is not hidden");  
    } catch(IOException e) {  
        System.out.println("I/O Error: " + e);  
    }  
  
    Files.isWritable(filepath);  
    System.out.println("File is writeable");  
  
 
    Files.isReadable(filepath);  
    System.out.println("File is readable");  
  
    try {  
      BasicFileAttributes attribs =  
        Files.readAttributes(filepath, BasicFileAttributes.class);  
  
      if(attribs.isDirectory())  
        System.out.println("The file is a directory");  
      else  
        System.out.println("The file is not a directory");  
  
      if(attribs.isRegularFile())  
        System.out.println("The file is a normal file");  
      else  
        System.out.println("The file is not a normal file");  
  
      if(attribs.isSymbolicLink())  
        System.out.println("The file is a symbolic link");  
      else  
        System.out.println("The file is not a symbolic link");  
  
      System.out.println("File last modified: " + attribs.lastModifiedTime());  
      System.out.println("File size: " + attribs.size() + " Bytes");  
    } catch(IOException e) {  
      System.out.println("Error reading attributes: " + e);  
    }  
  }  
}

Su Ubuntu + Eclipce ottengo:

Exception in thread "main" java.lang.IllegalArgumentException
	at sun.nio.fs.UnixPath.getName(UnixPath.java:323)
	at sun.nio.fs.UnixPath.getName(UnixPath.java:43)
	at Esempio.main(Esempio.java:12)