Maven 4: New foundations for a classic structure
summary
Maven 4 makes the multimodule reactor use a project-local repository so builds no longer require mvn install for modules inside one build and resume-from failures works reliably, the local build POM is enriched into a backwards-compatible consumer POM on install/deploy, CI-friendly version placeholders are expanded automatically, a native bom packaging is supported, builds can fail on logged warnings via fail-on-severity, the Maven Wrapper standardizes exact Maven versions, and the runtime requirement jumps to Java 17 while still allowing older target compilation via toolchains.
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chapters (19)
- 0:00Welcome
- 1:46Maven history
- 3:30Breaking changes in Maven 2/3
- 5:21Maven 4 timeline
- 6:02Maven 4 reactor
- 8:58Local repository
- 10:25Warnings as failures
- 12:34Consumer POM concept
- 17:15POMs working together
- 23:00Redundant elements removed
- 24:27CI-friendly versions
- 24:50BOM packaging
- 27:04Plugin and API compatibility
- 30:54Java 17 requirement
- 33:45Maven Wrapper
- 36:05Live demo
- 47:05Model version 4.1
- 48:08Maven Shell
- 48:52Migration path
