Preparing for JDK 9 - The Sharp Edges of JDK 9

Preparing for JDK 9 - The Sharp Edges of JDK 9

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Intro

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1 of 23

Intro

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Preparing for JDK 9 - The Sharp Edges of JDK 9

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  1. 1 Intro
  2. 2 Introduction Aurelio Garcia-Ribeyro • Director Product Management, Java Platform Group, Oracle • In charge of managing the product requirements for Oracle's JDK since joining Oracle through the Sun a…
  3. 3 One Developer's Bug Fix Is Another Developer Bug
  4. 4 Common Incompatibilities Are Due To
  5. 5 Important Incompatibility Expected in JDK 9
  6. 6 JEP 260: Encapsulate Most Internal APIs
  7. 7 JEP 223: New Version String Scheme
  8. 8 JEP 220: Modular Run-Time Images
  9. 9 JEP 214: Remove GC Combinations Deprecated in JDK 8
  10. 10 General Rule: Look Out for Unrecognized VM Options
  11. 11 JEP 231: Remove Launch-Time JRE Version Selection
  12. 12 Endorsed Standard Override and Extension Mechanism, Deprecated in 8u40, Dropped in 9
  13. 13 JEP 240: Remove the JVM Tool Interface hprof Agent
  14. 14 The Entire HTTP Proxying Mechanism of RMI Was Deprecated in Java SE 8 And will be removed in JDK 9 • Remove RMI HTTP proxy implementation • Remove RMVJRMP HTTP tunneling implementation • Never worked…
  15. 15 Remove Serialized Applets Functionality
  16. 16 Non-strict JNLP Parsing No Longer Allowed
  17. 17 Remove Unsupported Apple APIs Legacy code received through Apple's contribution of their own port • JEP 272: Platform-Specific Desktop Features replaces
  18. 18 JEP 271: Unified GC Logging Re-implemented GC logging with the new JVM logging framework from JEP 158 • Logs are in different format
  19. 19 G1 Is the New Default Garbage Collector
  20. 20 Prepare for the Future Now! 1 Download JDK 9 EA and JDK 9-Enabled IDE for example, NetBeans Dev
  21. 21 Download NetBeans Dev
  22. 22 Identify Problematic Dependencies Use Java Dependency Analysis Tool (deps) • Available since JDK 8 • Best results from the version in JDK 9 EA Option to find internal dependencies
  23. 23 Stopgap: Expose Internal APIs But come back and fix! Sample command for earlier dev version of Netbeans

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