Web Reference: Jan 16, 2024 · Java 15 builds on several features of past releases, including records, text blocks, new garbage collection algorithms, and more. It also adds new preview features, including sealed classes and hidden classes. See JDK 15 Release Notes for the complete list of new features and enhancements in JDK 15. The following are some of the updates in Java SE 15 and JDK 15: Text Blocks, first previewed in Java SE 13, is a permanent feature in this release and can be used without enabling preview features. This guide explores the key features of Java 15, including new garbage collectors, string methods, and experimental features. It also covers performance improvements, deprecations, and other changes in this release.
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