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

Java 8 introduces the possibility to cast an object to an intersection of types by adding multiple bounds. In the case of serialization, it is therefore possible to write:

Runnable r = (Runnable & Serializable)() -> System.out.println("Serializable!");

And the lambda automagically becomes serializable.