If you want to master functional programming, the best place to start is with the Java Function interface. This example will show you four different ways to implement this functional interface in your ...

This project provides a set of Java code examples illustrating the set of functional interfaces that were added to the JDK’s java.util.function package in Java 8+, their general use cases and usage in ...

There were a lot of new interfaces introduced in Java 8 to make working with Streams and lambda expressions possible. But, most of those functions are simply just derivations of these five basic ...

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 ...

Prior to Java 8, interfaces were contracted only with the abstract methods and subclass was obliged to implement the contract. Child class has to implement the abstract functions in order to fulfill ...