JEP 191 provides a Foreign Function Interface at the Java level, similar to JNA or JNR. It will allow easy access to native functions, and will manage native memory at the JVM level.

The DaysInMonth application in Listing 1 revealed a complete Function interface. Starting with Java 8, you can remove this interface and import the identical predefined Function interface.

Funderby provides over 400 functional interfaces, mostly specialized for primitive types that aren't supported by the standard java.util.function interfaces. There are: Suppliers that return primitive ...

Any method you can conjure up takes an object and returns an object that fulfills the Java Function contract. How to use Java’s Function interface. For this Java Function interface example, we will ...

There are over 40 functional interfaces listed in the java.util.functions package, which can make the prospect of functional programming in Java a somewhat daunting task. However, on close inspection, ...