Ejemplo n.º 1
0
 public static void main(String[] arguments) {
   try {
     // read byte data into a byte buffer
     String data = "friends.dat";
     FileInputStream inData = new FileInputStream(data);
     FileChannel inChannel = inData.getChannel();
     long inSize = inChannel.size();
     ByteBuffer source = ByteBuffer.allocate((int) inSize);
     inChannel.read(source, 0);
     source.position(0);
     System.out.println("Original byte data:");
     for (int i = 0; source.remaining() > 0; i++) {
       System.out.print(source.get() + " ");
     }
     // convert byte data into character data
     source.position(0);
     Charset ascii = Charset.forName("US-ASCII");
     CharsetDecoder toAscii = ascii.newDecoder();
     CharBuffer destination = toAscii.decode(source);
     destination.position(0);
     System.out.println("\n\nNew character data:");
     for (int i = 0; destination.remaining() > 0; i++) {
       System.out.print(destination.get());
     }
     System.out.println();
   } catch (FileNotFoundException fne) {
     System.out.println(fne.getMessage());
   } catch (IOException ioe) {
     System.out.println(ioe.getMessage());
   }
 }
Ejemplo n.º 2
0
  /** @param args */
  public static void main(String[] args) {
    FileChannel fc = null;
    RandomAccessFile raf = null;
    // StringBuilder sb;

    if (args.length != 1) {
      System.out.println("Usage: Ntfs filename");
      System.exit(1);
    }
    /*
    sb = new StringBuilder();
    int[] foo = {129,4,229,33};
    for (int b: foo) {
        sb.insert(0,String.format("%02X", b));
    }
    System.out.println(sb.toString());
    System.exit(0);
    */
    try {
      raf = new RandomAccessFile(args[0], "r");
      fc = raf.getChannel();
      Filesystem fs = new Filesystem(fc);

      fs.demo();
      // fs.displayFs();
    } catch (FileNotFoundException x) {
      System.out.println("FNF exp: " + x.getMessage());
    } catch (IOException x) {
      System.out.println("IO exp: " + x.getMessage());
    } finally {
      if (raf != null)
        try {
          raf.close();
        } catch (IOException e) {
          e.printStackTrace(); // To change body of catch statement use File | Settings | File
          // Templates.
        }
    }
  }