Add jdk28-preview module: JDK 28 early-access build, value classes, strict init flag, PEM, JSON incubator

Co-Authored-By: Claude Sonnet 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01Gth99spB1CzQmBFofXmU4Z
2026-09-28 08:48:04 +00:00
parent 57a04dc393
commit c8ff3acf09
15 changed files with 221 additions and 0 deletions
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+/** JEP 539 (preview in JDK 28): a JVM field flag. javac sets it on value-class fields; an identity class is the control. */
+public class StrictFieldProbe {
+	static value class Money { final long cents; Money(long c) { cents = c; } }
+	static class Legacy { final long cents; Legacy(long c) { cents = c; } }
+	public static void main(String[] args) { new Money(1); new Legacy(1); }
+}