OpenJDK Courses and Certifications

Java

The G1 Garbage Collector in JDK 9 - Features and Improvements

Explore G1 garbage collector in JDK 9: its goals, implementation, and improvements. Learn about generational region-based memory management and upcoming features.

• YouTube
• 30 minutes
• On-Demand
• Free Video

Dan Vega

Getting Started with Java 21 - JDK 21 First Look

Explore Java 21's new features, learn where to download it, and discover how to enable preview features in this comprehensive introduction to the latest JDK release.

• YouTube
• 15 minutes
• On-Demand
• Free Video

Java

Java 24, Faster Than Ever

Explore five recent performance improvements in Java 24, including the "MergeStore" JIT-compiler feature that merges array write operations, with insights on design considerations and optimization techniques.

• YouTube
• 41 minutes
• On-Demand
• Free Video

Java

Recent Java Performance Improvements and Optimizations

Explore five recent JDK performance enhancements, including MergeStore optimization, and learn how to leverage these improvements for faster Java applications through practical examples.

• YouTube
• 53 minutes
• On-Demand
• Free Video

Java

Project Valhalla: Java's Type System Refactoring and Value Classes

Dive into Project Valhalla's groundbreaking changes to Java's type system, exploring value classes, null-restricted types, and enhanced initialization features for improved memory efficiency and performance.

• YouTube
• 52 minutes
• On-Demand
• Free Video

Java

Future Directions of the Java Language

Explore recent enhancements and future directions for Java with Brian Goetz, focusing on Projects Amber and Valhalla in this JavaOne 2025 presentation that offers insights into Java's evolution.

• YouTube
• 46 minutes
• On-Demand
• Free Video

Java

Java 24 Language and API Changes - New Features and Enhancements

Explore Java 24's extensive updates, including pattern matching primitives, stream gatherers, quantum-safe encryption, structured concurrency, and flexible constructors - enhancing development capabilities and performance.

• YouTube
• 13 minutes
• On-Demand
• Free Video

Java

How to Upgrade to Java 25

Navigate the upgrade from Java 21 to 25 by understanding breaking changes, removals, and potential pitfalls that could affect your projects during migration.

• YouTube
• 23 minutes
• On-Demand
• Free Video

Java

Generational ZGC and Beyond

Explore advancements in Java's ZGC, including generational garbage collection and future improvements, for enhanced performance and efficiency in memory management.

• YouTube
• 34 minutes
• On-Demand
• Conference Talk

Okta

Foreign Function and Memory API in Java 17 - Replacing JNI

Explore Java 17's Foreign Function & Memory API, comparing it with JNI and alternatives like JNA and JNR-FFI. Includes benchmarks and practical examples using getpid.

• YouTube
• 31 minutes
• On-Demand
• Free Video

Java

Java 20 Features and Changes Overview - Inside Java Newscast

Comprehensive overview of Java 20 release, covering new features, deprecations, removals, and differences between Oracle JDK and OpenJDK. Ideal for developers staying current with Java.

• YouTube
• 25 minutes
• On-Demand
• Free Video

Java

JDK 8 to JDK 18 - Garbage Collection Performance Improvements

Explore Garbage Collection improvements from JDK 8 to 18, focusing on G1 collector enhancements. Learn about throughput, latency, and footprint optimizations in Java's evolution.

• YouTube
• 25 minutes
• On-Demand
• Free Video

Java

Java 16 - New Features and Enhancements

Explore Java 16's innovations, including pattern matching, record types, and JVM improvements. Gain insights into future enhancements and practical applications.

• YouTube
• 41 minutes
• On-Demand
• Free Video

Java

Vector API - SIMD Programming in Java

Explore SIMD programming in Java with the Vector API, enabling platform-agnostic, data-parallel operations for enhanced performance and efficiency in your applications.

• YouTube
• 43 minutes
• On-Demand
• Free Video

Java

jpackage: Packaging Tool for Java Applications - Inside Java Podcast

Explore jpackage, a new Java packaging tool for creating native installers. Learn its history, capabilities, limitations, and future prospects from OpenJDK expert Kevin Rushforth.

• YouTube
• 25 minutes
• On-Demand
• Free Video