Deserialize many objects in same file (java)

Question

When serializing objects, I set,

FileOutputStream fileOutputStream = new FileOutputStream(path +"\"+filename,true);

to append objects to serializing file. As an example, I serialize Email objects into the same file.

when deserializing these saved objects, I wanted to get all objects, but It gives only the very first object.

ObjectInputStream objectInputStream = new ObjectInputStream(fileInputStream);
Email sentEmail = (Email) objectInputStream.readObject();

I found a similar question about this, Deserialize many objects in java? but there is no, objectInputStream.hasNext() method. So, how to get all objects when deserializing?

user_15314575 · Answer

Serialize a Collection of Email objects. You should be able to read the collection with all Email Objects. For further information read How to read all objects from ObjectInputStream on SO.

Deserialize many objects in same file (java)

1 Answers