Unlocking Java's Code Maze
summary
A live quiz walks through ~15–16 coding puzzles and finishes 14, covering static init order that yields 20, a regex vowel partition, parallelStream on 10,000 words as the chosen optimisation, generics type erasure that causes a ClassCastException on get, string operator precedence, ConcurrentHashMap.merge producing 2,000 total, AtomicInteger ending at 2, sealed-class compile error (missing draw method), records where equals is true but == is false, List.of throwing UnsupportedOperationException, skip/limit behavior, and preferring CompletableFuture.allOf.
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chapters (6)
- 0:00Introduction and agenda
- 1:47Setting the scene
- 2:20Code analysis exercises
- 27:20Modern java features
- 32:09Optimization challenges
- 46:48Conclusion and wrap-up
