Java Core Functional Interfaces & Method References Explained | Java Mastery Series
#Java #FunctionalInterfaces #MethodReferences
Master Java's Built-in Functional Interfaces! In this tutorial, we explore the java.util.function package so you can stop writing custom interfaces from scratch and start using the highly optimized ones Java already provides.
We start with a quick introduction to built-in functional interfaces before diving deep into the most common ones you will use every day: Predicate (for returning booleans) and Function (for transforming data). Then, we blast through the rest of the essential toolkit, including Consumer, Supplier, the Bi-variants (like BiFunction), and Operator interfaces. Finally, we take your code to the absolute cleanest level possible by replacing standard Lambdas with the ultra-concise Double Colon (::) operator, known as Method References.
⏳ Chapters:
0:00 - Intro to Functional Interfaces
2:30 - Predicate
6:11 - Function
9:43 - Consumer, Supplier, Bi-variants & Operator Interfaces
16:05 - Method References
📌 Resources & Links:
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