intermediateJava 8 & Streams285 of 436
What is the latest LTS Java version? Key features and differences between Java 17 and Java 21 (Virtual Threads, Sequenced Collections, Pattern Matching)
Tests whether you can name what actually changed between the two LTS releases -- virtual threads (Project Loom) for cheap massive concurrency, sequenced collections giving a consistent first()/last() API across ordered types, and expanded pattern matching for switch -- rather than treating 17 and 21 as interchangeable 'modern Java.'
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