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 ...

You can use Java’s pre-defined functional interfaces (discussed later), or you can easily specify your own, as follows: @FunctionalInterface interface Function<T, R> { R apply(T t); } ...

In Java, we can implement the functional interface with a lambda expression and pass it to a method, then execute the function after an operation is finished. Here’s how that looks in code: ...

“Functional Programming in Java” is a new book written to help readers get on top of the new, essential Java 8 language features and the functional style that will change and improve your code. It’s a ...

So to learn Java lambda syntax, you need to be familiar with its three component parts: The argument list; The arrow; The method body; To apply these concepts, we first need a functional interface. A ...