Serialization tasks?

Question

Java

Guys, give a more difficult task for serialization, I understand this topic, I need practical tasks to fill my hand

Answer 1

Write a vector graphics editor with the ability to save (serialize) an image to a file and then you can load the serialized file into the program and continue working from the save location. You can also add the ability to combine images from two serialized ones.
Pretty simple problem, but still

Answer 2

Any problem with complex graphs, graph serialization can be quite a challenge.

Answer 3

Here's a couple of puzzles.
1. Write a client-server application that implements a remote method call (RPC) mechanism. Provide integration with service clients implemented on other platforms through XML serialization. If the client application is implemented on the same platform as service - use binary serialization (essentially analogous to WCF/RMI ).
2. Write your own object serialization library (object graphs) to YAML format.
3.Perform task No. 1 using object serialization in the Protocol Buffers format.