Migd-635-en-javhd-today-0607202201-48-25 Min -

| Segment (Time‑Stamp) | Title | Core Topics Covered | |----------------------|-------|----------------------| | 00:00 – 02:30 | Introduction & Context | Overview of the MIGD‑635 module, why Java 17‑23 matters today, and the “TODAY” learning philosophy (immediate applicability). | | 02:31 – 12:45 | Language Evolution Snapshot | Quick walk‑through of JEPs 378 → 456; emphasis on records, sealed classes, pattern matching, and switch expressions. | | 12:46 – 23:10 | Hands‑On: Refactoring to Records & Sealed Types | Live coding demo: converting a POJO hierarchy into a record‑based data model; introducing sealed interfaces to enforce domain invariants. | | 23:11 – 33:00 | Build‑Tool Integration | Maven compiler plugin configuration for preview features, Gradle java-toolchains, and IDE setup tips for Java 23. | | 33:01 – 41:30 | Concurrency Modernization – Virtual Threads | Explanation of Project Loom, demo of a simple HTTP server using virtual threads, comparison with traditional thread‑pool models. | | 41:31 – 46:50 | Performance & Migration Checklist | Benchmarks (JMH) for records vs. classes, sealed types impact on JVM optimizations, risk‑mitigation checklist for production roll‑out. | | 46:51 – 48:25 | Wrap‑Up & Resources | Summary of key take‑aways, links to JDK documentation, MIGD‑635 supplemental PDFs, and next steps (MIGD‑636 – “Reactive Streams & Structured Concurrency”). |

By the end of the 48‑minute session, viewers will be able to: MIGD-635-EN-JAVHD-TODAY-0607202201-48-25 Min

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