Java 8 vs Java 21 – What Changed in 10 Years? (With Code Examples)

Published: 06 July 2025
on channel: ITCorner4U

442

Are you still writing Java like it's 2014?

In this video, I break down the most important features Java has gained since version 8 — and why Java 21 is a game changer.

🔍 Topics Covered:
👉Pattern Matching (Introduced in Java 14 (preview) Final in Java 16)
👉Text Blocks (Introduced in Java 13 (preview) Final in Java 15)
👉Records (Introduced in Java 14 (preview) Final in Java 16)
👉Switch Expressions (Introduced in Java 12 (preview) Final in Java 14)
👉Virtual Threads (Project Loom) (Introduced in Java 19 (preview) Final in Java 21)
👉Sealed Classes (Introduced in Java 15 (preview) Final in Java 17)

You'll see before vs after code snippets that are perfect for upgrading legacy code or prepping for interviews.

👉 Like the video if this helped, and don't forget to subscribe for more real-world Java tips.
💬 Have questions? Drop them in the comments!

#java #java21 #java8 #javaupgrade #javaprogramming
#virtualthreads #projectloom #cleanarchitecture
#softwareengineering #backenddeveloper #fullstackdeveloper

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