Flow of control in behaviors Java is not a dynamic language; to simulate a dynamic language’s features in Java, you must add a certain amount of “glue” to each class method that may be ...

This changed in Java 8, where invokedynamic is now generated and used under the hood to implement lambda expressions and default methods, as well as the primary dispatch mechanism for Nashorn.

The overloaded assertions introduced as part of #1638 broke Groovy's dynamic method dispatch. For example the following code yields the following exception: groovy.lang.GroovyRuntimeException: ...