Summary

Remove support for the preview feature "String Templates" from the Java compiler and the Java API.

Problem

String templates were previewed in Java 21 (JEP 430) and re-previewed in Java 22 (JEP 459). After some experience with the prototype, it became clear that the processor-centric nature of the proposed design was confusing to users and lacked the desired compositionality. These problems were described in a post on the amber-spec-experts mailing list:

https://mail.openjdk.org/pipermail/amber-spec-experts/2024-April/004106.html

Solution

As there's no clear consensus on how to re-design the feature, we have come to the position that it would be more prudent to drop it for the time being. String templates will not be a feature of Java 23, even as a preview feature.

Specification

Specdiff: https://cr.openjdk.org/~mcimadamore/jdk/8329948/v2/specdiff_out/overview-summary.html