How to serialize a lambda?

Question

How can I elegantly serialize a lambda?

For example, the code below throws a NotSerializableException. How can I fix it without creating a Seriali

Answer 1

If you are willing to switch to another serialization framework like Kryo, you can get rid of the multiple bounds or the requirement that the implemented interface must implement Serializable. The approach is to

1. Modify the InnerClassLambdaMetafactory to always generate the code required for serialization
2. Directly call the LambdaMetaFactory during deserialization

For details and code see this blog post