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 ...

As you can see, there is nothing special about the interfaces defined in the java.util.function package. They are regular Java interfaces that comply with all of the traditional rules of syntax.

Get a deep dive into using method references in your Java programs, including stream operations, event listeners, and constructors and factories. Topics Spotlight: AI-ready data centers ...

Per-Åke Minborg, consulting member of technical staff, Java Core Libraries at Oracle, presented Function and Memory Access in Pure Java at JavaOne 2025.Minborg kicked off his presentation with an ...