All Java methods have an argument list and a body, so it should come as no surprise that these two elements are an important part of Java lambda syntax. Furthermore, the Java lambda syntax separates ...

Creating DSLs in Java, Part 1: ... You want them to use the syntax you provide, ... in the context of Rake task is simply a method that takes a hash as a parameter.

Method and variable handles vs. Java reflection. To truly understand MethodHandles and VarHandles—what they do and why they are useful—it’s helpful to know a few things about reflection in Java.