JDK 11‑13 Enhancements: Switch Expressions, Text Blocks, Dynamic CDS, ZGC Improvements, Socket API Rewrite, New FileSystem Methods, NIO Updates, Time API, I18N, and Feature Removals
This article summarizes the major JDK 11‑13 updates, including switch expression simplifications, multi‑line text block literals, dynamic AppCDS archives, ZGC memory‑release enhancements, a modernized socket API, new FileSystems methods, bulk NIO ByteBuffer operations, the Reiwa era in java.time, Unicode 12.1 support, and several deprecated features that have been removed.
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