To JAR Hell And Back

source code

Want to play around with the code yourself? Check out the repository Java 9/11 Migration, a Java 8 code base that causes some migration challenges when updated to Java 9/11 - it contains many of the snippets shown in this talk. It has a permissive license, so you can reuse the code for your projects.

table of contents

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I'm sure you've heard about compatibility issues when upgrading from Java 8 to 9 and beyond, but did you try it yourself yet? This live coding session starts with a typical Java 8 application and runs up against and eventually overcomes the common hurdles:

build system configuration
dependency analysis with jdeps
dependencies on internal APIs and Java EE modules
split packages

To get the most out of this talk, you should have a good understanding of the module system basics - afterwards you will know how to approach your application's migration to Java 9 and the module system.

▚Slides

Here's the current version of the slides.

I also embedded them below. If they're focussed, you can navigate with arrow keys or swipes (they're two-dimensional, with chapters on the horizontal axis and chapter content layed out vertically). Use Page Up/Down for linearized order and ? for more shortcuts.