Learning modern Java the playful way
summary
Demos show concrete upgrades: a multimodal encoder indexes image vectors into Elasticsearch and a hybrid search (keyword + vector, free reciprocal rank fusion) returns apples and oranges correctly; IDE demos enable compact source files, instance mains and IO.printLine for fast prototyping; converting beans to records shrinks code; stream gatherers use mapConcurrent with virtual threads (five workers shown) to simplify parallel mapping; structured concurrency replaces tangled CompletableFuture cancellation; a Project Panama/vector benchmark demonstrates the vector API can be much faster depending on CPU — the demos run but some features remain preview or beta.
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chapters (16)
- 0:00Introduction
- 2:55Modern Java matters
- 5:25Staying updated with Java
- 8:37Compact source files
- 12:35Demo: Multimodal image search
- 16:10Records in Java
- 17:15Module imports
- 18:17Command completion
- 20:25Simple IO replacement
- 22:11Stream gatherers
- 26:28Preview features
- 33:52Markdown comments
- 34:53Happy birthday
- 36:02Project Panama demo
- 43:25Convincing stakeholders
- 44:50Feedback
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