How to append to an ObjectInputStream without getting java.io.StreamCorruptedException: invalid type code: AC? [duplicate]

Answer 1

Creating a new ObjectInputStream without closing the underlying FileInputStream solves this problem:

    FileInputStream fin = new FileInputStream(file);
    while (...) {
        ObjectInputStream oin = new ObjectInputStream(fin);
        Object o = oin.readObject();
        ...
    }
    fin.close();