JEP proposed to target JDK 23: 482: Flexible Constructor Bodies (Second Preview)

[Mark Reinhold]

The following JEP is proposed to target JDK 23:

  482: Flexible Constructor Bodies (Second Preview)
       https://openjdk.org/jeps/482

  Summary: In constructors in the Java programming language, allow
  statements to appear before an explicit constructor invocation, i.e.,
  super(..) or this(..).  The statements cannot reference the instance
  under construction, but they can initialize its fields.  Initializing
  fields before invoking another constructor makes a class more reliable
  when methods are overridden.  This is a preview language feature.

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 Monday, 27 May, 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 23.

- Mark


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