New candidate JEP: 492: Flexible Constructor Bodies (Third Preview)

[Gavin Bierman]

Dear experts:

The first draft of a spec covering JEP 492: Flexible Constructor Bodies (Third Preview) is available:

https://cr.openjdk.org/~gbierman/jep492/latest/

(As the feature is unchanged from the second preview, this spec is the same as the previous edition but with a small number of minor bugfixes.)

Feel free to contact me directly or on this list with any comments.

Thanks
Gavin


On 2 Oct 2024, at 14:14, Mark Reinhold <mark.reinhold at oracle.com> wrote:

https://openjdk.org/jeps/492

 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.

- Mark

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