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Instructor: Packt - Course Instructors
Included with 
Recommended experience
Intermediate level
This course is ideal for software developers with prior experience in Java, particularly those familiar with Java 17.
Recommended experience
Intermediate level
This course is ideal for software developers with prior experience in Java, particularly those familiar with Java 17.
Master Java 21 features like unnamed classes, record patterns, and virtual threads with hands-on practice.
Leverage advanced APIs, including Vector and Foreign Function, for performance optimization and scalability.
Enhance concurrency and security with structured concurrency, scoped values, and Key Encapsulation Mechanism (KEM).
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February 2025
11 assignments
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Discover the cutting-edge features of Java 21 and unlock new development possibilities in 2024. This course offers an in-depth exploration of the latest Java Enhancement Proposals (JEPs), including advanced programming constructs, performance optimizations, and enhanced concurrency management. By the end, you’ll have a robust understanding of Java 21’s transformative capabilities.
Starting with an overview of Java 21 and prerequisites, you’ll set up your development environment on both Windows and macOS, optimizing your IDE for efficient coding. From there, you’ll dive into Java 21’s innovations such as unnamed classes, enhanced pattern matching, and record patterns. With practical hands-on exercises, you’ll solidify these concepts through direct application. The course further delves into advanced topics like the Vector API, scoped values, virtual threads, and structured concurrency. You’ll also explore memory management enhancements with Generational ZGC, cryptographic advancements via Key Encapsulation Mechanisms (KEM), and native library integration through the Foreign Function and Memory API. Designed for Java developers seeking to elevate their skills, this course is ideal for professionals familiar with Java 17 or earlier versions. A basic understanding of Java fundamentals is recommended to fully benefit from this intermediate-level course.
In this module, we will set the stage for the course by outlining the prerequisites, revisiting essential Java concepts, and introducing Java Enhancement Proposals (JEPs) that shape the innovations in Java 21.
3 videos1 reading
In this module, we will guide you through setting up your development environment on Windows and MacOS, including SDKman, Java 21, and Visual Studio Code IDE. By the end, you'll be ready to dive into hands-on Java development.
3 videos1 assignment
In this module, we will explore the powerful new features of Java 21, such as unnamed classes, pattern matching, and unnamed variables. You'll practice using these innovations through interactive hands-on sessions.
5 videos1 assignment
In this module, we will dive into string templates and sequenced collections, two key features of Java 21 that simplify string operations and collection management. You'll solidify your skills through hands-on coding sessions.
5 videos1 assignment
In this module, we will focus on record patterns, examining how they transform Java's approach to data modeling and pattern matching. Through hands-on examples, you'll master their usage in real-world scenarios.
7 videos1 assignment
In this module, we will explore the generational ZGC, a major improvement in Java's garbage collection mechanism. You'll understand its benefits and its potential to enhance performance in modern applications.
1 video1 assignment
In this module, we will introduce virtual threads, a game-changing feature in Java 21. You'll gain hands-on experience with virtual threads, learning how to simplify concurrent programming and boost scalability.
2 videos1 assignment
In this module, we will compare scoped values with ThreadLocal, exploring their differences and best use cases. You'll apply scoped values in practical exercises and learn how they enhance context management.
3 videos1 assignment
In this module, we will examine the enhanced Vector API in Java 21. Through hands-on sessions, you'll learn how to use this API to perform high-performance computations efficiently.
2 videos1 assignment
In this module, we will delve into the Key Encapsulation Mechanism (KEM), exploring its role in enhancing Java's cryptographic capabilities. A detailed code walkthrough will help you understand its implementation.
2 videos1 assignment
In this module, we will uncover the Foreign Function & Memory API, a critical addition to Java 21. You'll see how it allows seamless interaction with native libraries, enabling more versatile application development.
1 video1 assignment
In this module, we will dive into structured concurrency, a feature designed to simplify and organize concurrent programming in Java. Through code demonstrations, you'll understand its benefits and implementation.
1 video1 assignment
Packt helps tech professionals put software to work by distilling and sharing the working knowledge of their peers. Packt is an established global technical learning content provider, founded in Birmingham, UK, with over twenty years of experience delivering premium, rich content from groundbreaking authors on a wide range of emerging and popular technologies.
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Yes, you can preview the first video and view the syllabus before you enroll. You must purchase the course to access content not included in the preview.
If you decide to enroll in the course before the session start date, you will have access to all of the lecture videos and readings for the course. You’ll be able to submit assignments once the session starts.
Once you enroll and your session begins, you will have access to all videos and other resources, including reading items and the course discussion forum. You’ll be able to view and submit practice assessments, and complete required graded assignments to earn a grade and a Course Certificate.
If you complete the course successfully, your electronic Course Certificate will be added to your Accomplishments page - from there, you can print your Course Certificate or add it to your LinkedIn profile.
This course is one of a few offered on Coursera that are currently available only to learners who have paid or received financial aid, when available.
You will be eligible for a full refund until two weeks after your payment date, or (for courses that have just launched) until two weeks after the first session of the course begins, whichever is later. You cannot receive a refund once you’ve earned a Course Certificate, even if you complete the course within the two-week refund period. See our full refund policy.
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