A Java 9 update is not always trivial; quite the opposite, migrating to Java 9 can be challenging. Here's how to gather and categorize problems.
JDeps is a dependency analysis tool for Java bytecode (class files and JARs). Learn how to use filters, aggregate results, and create diagrams.
With v0.2 the JDeps Maven Plugin allows the creation of flexible exceptions from build-breaking for a self-paced preparation for Java 9 and Project Jigsaw.