Maven Puzzlers
Talkat JCON Europe 2023 · on Thursday, 2023-06-22· at 14:00· Cinema 9, Im Mediapark 1, 50670 Köln, Germany·
summary
Demonstrates exact Maven rules: direct dependency always wins (position irrelevant), but when two transitive versions tie the first discovered wins, so resolution is transitive first, direct last; BOM imports only dependencyManagement entries (no dependency blocks), parent/child dependencyManagement lets child override parent, and Maven 3 warns on duplicate deps while Maven 4 errors. Recommends tooling: enforcer plugin to fail builds early, prefer mvn verify over mvn install, and use Maven Wrapper, Maven Daemon or SDKMAN to pin reproducible environments.
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chapters (10)
- 0:00Introduction to Maven Puzzlers
- 1:46Why Maven matters today
- 5:15Maven lifecycle and verify vs install
- 8:04Dependency resolution challenges
- 15:37First interactive quiz round
- 20:51Maven Enforcer plugin explained
- 25:08Dependency management block rules
- 32:36Multi-project builds and parent POMs
- 39:37Bill of Materials (BOM) files
- 47:16Key takeaways and closing
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