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.

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 ...

The release of Java SE 15 in Sept 2020 will introduce "sealed classes" (JEP 360) as a preview feature. A sealed class is a class or interface which restricts which other classes or interfaces may ...

Java Supplier interface tutorial. As you can see, the code for the class that implements Java’s Supplier interface is fairly simple. The only requirements are the class declaration and the ...

Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs.