This library contains serializable versions of generic functional interface introduced in JDK 8. Starting with version 1.9.0, the library is also a Java module. Starting with version 1.8.4, the ...

JDK Enhancement Proposal (JEP) 191 defines the Java Foreign Function Interface (FFI), which are interfaces that can bind native functions to Java methods and can manage blocks of native memory.

The constantly "function" is defined in each functional interface. Its variants couldn't be defined in the Core interface since its return type varies but its argument list is the same for each arity.

Predefined functional interfaces. Java 8 introduced predefined functional interfaces (java.util.function) so that developers don’t have create our own functional interfaces for common tasks.

With a basic understanding of these functional interfaces, you can easily master the other 35 or so functions because the remainder simply build on these five concepts. Just look at the various ...

How to use Java’s Function interface. For this Java Function interface example, we will provide a single method named “apply” that takes an Integer as an argument, squares it and returns the result as ...