Understanding Java's Four Functional Interface Categories
Java's functional interfaces fall into four primary categories. Memorizing these patterns helps when working with lambda expressions and the Streams API.
Consumer Interfaces
A Consumer accepts a parameter but produces no return value.
@FunctionalInterface
public interface Consumer<T> {
void accept(T input);
default Consumer&l ...
Posted on Wed, 03 Jun 2026 16:31:42 +0000 by pdn