Java 22 has introduced several updates and features including JEPs, underscore usage, String Templates, 'Statements before super()', 'Implicitly Declared Classes', Stream Gatherer interface, G1 garbage collector, Region Pinning, and the Foreign Function & Memory API.

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Table of contents
1. Unnamed Variables and Patterns(JEP 456)2. String Templates(JEP 459)3. Statements before super(...) (JEP 447)4. Launch Multi-File Source Code Programs(JEP 458)5. Implicit Classes and Instance Main Methods(JEP 463)6. Stream Gatherers(JEP 461)7. Regional Pinning for G1(JEP 423)8. Foreign Function and Memory API(JEP 454)

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