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      JDK 9

      The goal of this Project was to produce an open-source reference implementation of the Java SE 9 Platform as defined by JSR 379 in the Java Community Process.

      JDK 9 reached General Availability on 21 September 2017. Production-ready binaries under the GPL are available from Oracle; binaries from other vendors will follow shortly.

      The features and schedule of this release were proposed and tracked via the JEP Process, as amended by the JEP 2.0 proposal.

      Features

      102: Process API Updates
      110: HTTP 2 Client
      143: Improve Contended Locking
      158: Unified JVM Logging
      165: Compiler Control
      193: Variable Handles
      197: Segmented Code Cache
      199: Smart Java Compilation, Phase Two
      200: The Modular JDK
      201: Modular Source Code
      211: Elide Deprecation Warnings on Import Statements
      212: Resolve Lint and Doclint Warnings
      213: Milling Project Coin
      214: Remove GC Combinations Deprecated in JDK 8
      215: Tiered Attribution for javac
      216: Process Import Statements Correctly
      217: Annotations Pipeline 2.0
      219: Datagram Transport Layer Security (DTLS)
      220: Modular Run-Time Images
      221: Simplified Doclet API
      222: jshell: The Java Shell (Read-Eval-Print Loop)
      223: New Version-String Scheme
      224: HTML5 Javadoc
      225: Javadoc Search
      226: UTF-8 Property Files
      227: Unicode 7.0
      228: Add More Diagnostic Commands
      229: Create PKCS12 Keystores by Default
      231: Remove Launch-Time JRE Version Selection
      232: Improve Secure Application Performance
      233: Generate Run-Time Compiler Tests Automatically
      235: Test Class-File Attributes Generated by javac
      236: Parser API for Nashorn
      237: Linux/AArch64 Port
      238: Multi-Release JAR Files
      240: Remove the JVM TI hprof Agent
      241: Remove the jhat Tool
      243: Java-Level JVM Compiler Interface
      244: TLS Application-Layer Protocol Negotiation Extension
      245: Validate JVM Command-Line Flag Arguments
      246: Leverage CPU Instructions for GHASH and RSA
      247: Compile for Older Platform Versions
      248: Make G1 the Default Garbage Collector
      249: OCSP Stapling for TLS
      250: Store Interned Strings in CDS Archives
      251: Multi-Resolution Images
      252: Use CLDR Locale Data by Default
      253: Prepare JavaFX UI Controls & CSS APIs for Modularization
      254: Compact Strings
      255: Merge Selected Xerces 2.11.0 Updates into JAXP
      256: BeanInfo Annotations
      257: Update JavaFX/Media to Newer Version of GStreamer
      258: HarfBuzz Font-Layout Engine
      259: Stack-Walking API
      260: Encapsulate Most Internal APIs
      261: Module System
      262: TIFF Image I/O
      263: HiDPI Graphics on Windows and Linux
      264: Platform Logging API and Service
      265: Marlin Graphics Renderer
      266: More Concurrency Updates
      267: Unicode 8.0
      268: XML Catalogs
      269: Convenience Factory Methods for Collections
      270: Reserved Stack Areas for Critical Sections
      271: Unified GC Logging
      272: Platform-Specific Desktop Features
      273: DRBG-Based SecureRandom Implementations
      274: Enhanced Method Handles
      275: Modular Java Application Packaging
      276: Dynamic Linking of Language-Defined Object Models
      277: Enhanced Deprecation
      278: Additional Tests for Humongous Objects in G1
      279: Improve Test-Failure Troubleshooting
      280: Indify String Concatenation
      281: HotSpot C++ Unit-Test Framework
      282: jlink: The Java Linker
      283: Enable GTK 3 on Linux
      284: New HotSpot Build System
      285: Spin-Wait Hints
      287: SHA-3 Hash Algorithms
      288: Disable SHA-1 Certificates
      289: Deprecate the Applet API
      290: Filter Incoming Serialization Data
      291: Deprecate the Concurrent Mark Sweep (CMS) Garbage Collector
      292: Implement Selected ECMAScript 6 Features in Nashorn
      294: Linux/s390x Port
      295: Ahead-of-Time Compilation
      297: Unified arm32/arm64 Port
      298: Remove Demos and Samples
      299: Reorganize Documentation

      Schedule

      2016/05/26 Feature Complete
      2016/12/22 Feature Extension Complete
      2017/01/05 Rampdown Start
      2017/02/09 All Tests Run
      2017/02/16 Zero Bug Bounce
      2017/03/16 Rampdown Phase Two
      2017/06/22 Initial Release Candidate
      2017/07/06 Final Release Candidate
      2017/09/21 General Availability

      Phases

      We stabilized the release in an increasingly-rigorous sequence of phases, listed here for the record:

      During those phases we used three processes to coordinate our work:

      Milestone definitions

      The milestone definitions for JDK 9 were the same as those for JDK 8, with the addition of:

      Last update: 2017/9/21 18:10 UTC
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