RELEASE NOTES FOR: 11.0.27
====================================================================================================

Notes generated: Fri Jan 17 05:18:10 CET 2025

Hint: Prefix bug IDs with https://bugs.openjdk.org/browse/ to reach the relevant JIRA entry.

JAVA ENHANCEMENT PROPOSALS (JEP):

  None.

RELEASE NOTES:

tools/javac:

    JDK-8273914: Indy String Concat Changes Order of Operations

      String concatenation has been changed to evaluate each argument and eagerly convert it to a
      string, in left-to-right order. This fixes a bug in the invokedynamic-based string
      concatentation strategies introduced in [JEP 280](http://openjdk.java.net/jeps/280).
      
      For example, the following now prints `"foofoobar"`, not `"foobarfoobar"`:
      
      ```     StringBuilder builder = new StringBuilder("foo");     System.err.println("" + builder
      + builder.append("bar")); ```

core-libs/java.util.jar:

    JDK-8335912: New jar command option to not overwrite existing files

      The `jar` tool's extract operation has been enhanced to allow the `--keep-old-files` or the
      `-k` options to be used to preventing overwriting existing files.
      
      *Example Usages:*
      
      `jar xkf foo.jar`
      
      or
      
      `jar --extract --keep-old-files --file foo.jar`
      
      Either of these commands will extract the `foo.jar`, and if an entry with the same name
      already exist in the target directory, then the existing file will not be overwritten. 


ALL FIXED ISSUES, BY COMPONENT AND PRIORITY:

core-libs/java.util.jar:
  (P5) JDK-8335912: Add an operation mode to the jar command when extracting to not overwriting existing files

hotspot/runtime:
  (P4) JDK-8268364: jmethod clearing should be done during unloading

infrastructure/other:
  (P4) JDK-8343474: [updates] Customize README.md to specifics of update project

infrastructure/release_eng:
  (P4) JDK-8345509: Bump update version of OpenJDK: 11.0.27

tools/javac:
  (P4) JDK-8273914: Indy string concat changes order of operations