Is it possible to implement an interface at runtime in Java?

Question

I am working on a project where there are a lot of objects that are created by a library, and I have no access to the creation process of these objects.

The following sn

Answer 1

Depending on your java version, you could use the lambda expression (with java 8).

The code would be relatively simple:

Clazz o = .... // Here you obtain your object through third party library
ExampleInterface yourInterface = o::run;
yourInterface.run();

Note that this only works for interface with one method. Both signatures (interface and Clazz) must match.