code: public boolean processClassFile(String fileName) {
          Path path = Paths.get(fileName);
          try {
              ClassFile cf = ClassFile.read(path);
              processClass(cf);
              return true;
          } catch (NoSuchFileException nsfe) {
              errorNoFile(fileName);
          } catch (IOException | ConstantPoolException ex) {
              errorException(ex);
          }
          return false;
      }
docs: Scans the named class file for uses of deprecated APIs.
  
  @param fileName the class file to scan
  @return true on success, false on failure