public void save(File file) throws IOException {
  FileOutputStream fos=new FileOutputStream(file);
  ObjectOutputStream out=new ObjectOutputStream(fos);
  try {
    out.writeObject(classLibraryBuilder);
  }
  finally {
    out.close();
    fos.close();
  }
}

public void save ( File file ) throws IOException { FileOutputStream fos = new FileOutputStream ( file ) ; ObjectOutputStream out = new ObjectOutputStream ( fos ) ; try { out . writeObject ( classLibraryBuilder ) ; } finally { out . close ( ) ; fos . close ( ) ; } }
persist the classlibrarybuilder to a file
