Top Features of Java 21

This is the repository for the LinkedIn Learning course Top Features of Java 21. The full course is available from LinkedIn Learning.

In this course, developer Bethan Palmer guides you through the top features of Java 21. After an overview of the Java release cycle, dive into string templates, sequenced collections, and record patterns. Learn about pattern matching with switch statements, as well as how to use unnamed patterns and variables. Discover the new way to define main methods and find out what an unnamed class is. Plus, explore virtual threads and generational ZGC.

See the readme file in the main branch for updated instructions and information.

Instructions

This repository has branches for each of the videos in the course. You can use the branch pop up menu in github to switch to a specific branch and take a look at the course at that stage, or you can add /tree/BRANCH_NAME to the URL to go to the branch you want to access.

Branches

The branches are structured to correspond to the videos in the course. The naming convention is CHAPTER#_MOVIE#. As an example, the branch named 02_03 corresponds to the second chapter and the third video in that chapter. Some branches will have a beginning and an end state. These are marked with the letters b for "beginning" and e for "end". The b branch contains the code as it is at the beginning of the movie. The e branch contains the code as it is at the end of the movie. The main branch holds the final state of the code when in the course.

When switching from one exercise files branch to the next after making changes to the files, you may get a message like this:

error: Your local changes to the following files would be overwritten by checkout:        [files]
Please commit your changes or stash them before you switch branches.
Aborting

To resolve this issue:

Add changes to git using this command: git add .
Commit changes using this command: git commit -m "some message"

Instructor

Bethan Palmer

Developer