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Announcing support for upgrades to Java 21 in Amazon Q Developer

DevOps & Developer Productivity Blog



Amazon Q Developer now supports Java 21 upgrades, offering developers an easier way to modernize and improve their Java applications.

  • Supports upgrading Java applications from versions 8, 11, and 17 to Java 17 or 21
  • Provides key benefits of Java 21, including Virtual Threads, improved performance, and better memory management
  • Simplifies upgrade process through the `/transform` command in IDE chat windows
  • Analyzes codebase and provides detailed diffs for code transformations
  • Generates comprehensive summaries and tailored recommendations post-upgrade
  • Helps developers leverage new Java features and optimize application performance

The new capability aims to reduce manual effort in Java application upgrades, allowing development teams to focus on strategic initiatives while keeping their technology stack current.



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