なお、Java 8ではjava.util.functionパッケージで以下のような汎用的な関数型インタフェースがいくつか用意されており、後述するコレクションAPIなど ...

Functionインタフェースはラムダ式やメソッド参照の代入先として使用するための関数型インタフェースで、java.util.functionパッケージで提供されて ...

Along with lambdas, Java SE 8 brought method references to the Java language. This tutorial offers a brief overview of method references in Java, then gets you started using them with Java code ...

Many developers get intimidated when they look at all the new APIs that accept lambda expressions as arguments, and wonder how they’ll ever figure out which Java function to use and what the proper ...

Traditional Java 8 Predicate example While the Java 8 Predicate is a functional interface, there's nothing to stop a developer from using it in a traditional manner. Here's a Java Predicate example ...

Learn how to use synchronous and asynchronous callbacks in Java—including callbacks with lambda expressions, CompletableFuture, and more.