When adding a static method to an interface (java 8) for using in an expression the decorator created will try to override it and calling it using the mapper interface instance given to the decorator.

But in Java 8 now we can declare static method and can declare some default methods using "default " keyword. So now there's virtually no difference between an interface and an abstract class other ...

Use Java's packages and static imports to organize top-level types and simplify access to their static members.

A great deal of Java programming -- from conditional statements to iterative loops -- deals with the evaluation of true or false values. When you work with the JDK's Streams API and Lambda functions, ...

Interested in Java functional programming? The first place you need to start, especially if you use the Streams API, is with this Java Function interface example.