Member-only story
Primitive Functional Interfaces in Java
Hello everyone, welcome back! In this article, we will discuss primitive functional interfaces in Java. These interfaces are specialized versions of Java’s standard functional interfaces, designed to work with primitive types like int, long, and double. They help improve performance by avoiding boxing and unboxing operations, which are common when using regular functional interfaces like Function<T, R>, Predicate<T>, and Consumer<T>. Let’s dive into these interfaces and how they can be used effectively.
2. Why Use Primitive Functional Interfaces?
In Java, autoboxing is the automatic conversion of primitive types (like int) into their corresponding wrapper classes (like Integer). This can lead to performance overhead, especially when working with large collections or streams of primitive values. To solve this, Java provides primitive functional interfaces that work directly with int, long, and double types, bypassing the need for autoboxing.
3. Types of Primitive Functional Interfaces
There are several primitive functional interfaces in Java, each designed to handle specific primitive types (int, long, double). These interfaces are specialized versions of the standard Function, Predicate, and Consumer interfaces, but are optimized for primitives. Let’s walk through the different types of primitive functional interfaces.
