public static <T> void serialize(ArrayList<T> objToSerialize, String filename, String pathKey) throws Exception { FileOutputStream output = null; ObjectOutputStream objOut = null; try { File serializeF = FileUtil.createNewLocalFile(pathKey, "", filename); output = new FileOutputStream(serializeF); objOut = new ObjectOutputStream(output); for (int i = 0; i < objToSerialize.size(); i++) { objOut.writeObject(objToSerialize.get(i)); } } catch (Exception ex) { throw new ApplicationException( "[ObjSerializeHelper.serialize] Unable to serialize obj to a file.", ex); } finally { if (output != null) { output.close(); } if (objOut != null) { objOut.flush(); objOut.close(); } } }