code: public boolean exists() throws IOException {
          boolean exists = false;
          try {
              // force lookup again
              setFileHandle(null);
              exists = (getFileHandle() != null);
          } catch (FileNotFoundException e) {
              // do nothing
          }
          return exists;
      }
docs: /*
  (non-Javadoc)
  
  @see com.emc.ecs.nfsclient.util.NfsFile#exists()