JEP proposed to target JDK 18: 420: Pattern Matching for switch (Second Preview)

[mark.reinhold at oracle.com]

The following JEP is proposed to target JDK 18:

  420: Pattern Matching for switch (Second Preview)
       https://openjdk.java.net/jeps/420

  Summary: Enhance the Java programming language with pattern matching
  for switch expressions and statements, along with extensions to the
  language of patterns.  Extending pattern matching to switch allows
  an expression to be tested against a number of patterns, each with a
  specific action, so that complex data-oriented queries can be expressed
  concisely and safely.

Feedback on this proposal from JDK Project Committers and Reviewers [1]
is more than welcome, as are reasoned objections.  If no such objections
are raised by 23:59 UTC on Tuesday, 23 November, or if they’re raised
and then satisfactorily answered, then per the JEP 2.0 process proposal
[2] I’ll target this JEP to JDK 18.

- Mark


[1] https://openjdk.java.net/census#jdk
[2] https://cr.openjdk.java.net/~mr/jep/jep-2.0-02.html