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JEP 441, Pattern Matching for the switch, is completed in JDK 21, following four previews in JDKs 17-20 (JEPs 406, 420, 427, 433). It finalizes the feature, addressing feedback from previews, and enha ...
Key Takeaways Pattern matching for the switch control-flow statement is a new feature introduced in Java 17 and refined in subsequent versions. A pattern can be used in case labels as case p.
The Singleton pattern is deceptively simple, even and especially for Java developers. In this classic JavaWorld article, David Geary demonstrates how Java developers implement singletons, with ...
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