Java 27 and 26: runnable demos and captured output for every JEP, plus version lanes

Co-Authored-By: Claude Sonnet 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01B38FGKKam5SCGgwgduVAh3
2026-09-21 15:08:50 +00:00
commit f59c1de96d
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+# Thread.stop(), suspend(), resume(): when did they actually go?
+
+$ java ThreadStopRuntime      (JDK 21)
+    java.version = 21.0.12.1
+    Thread.stop(): UnsupportedOperationException
+
+$ java ThreadStopRuntime      (JDK 25)
+    java.version = 25.0.4.1
+    Thread.stop(): UnsupportedOperationException
+
+$ javac ThreadSuspendGone.java      (JDK 21)
+    exit=0
+
+$ javac ThreadSuspendGone.java      (JDK 25)
+    <repo>/lanes/src/ThreadSuspendGone.java:8: error: cannot find symbol
+            t.suspend();
+             ^
+      symbol:   method suspend()
+      location: variable t of type Thread
+    <repo>/lanes/src/ThreadSuspendGone.java:9: error: cannot find symbol
+            t.resume();
+             ^
+      symbol:   method resume()
+      location: variable t of type Thread
+    2 errors
+    exit=1
+
+$ javac ThreadSuspendGone.java      (JDK 26)
+    <repo>/lanes/src/ThreadSuspendGone.java:8: error: cannot find symbol
+            t.suspend();
+             ^
+      symbol:   method suspend()
+      location: variable t of type Thread
+    <repo>/lanes/src/ThreadSuspendGone.java:9: error: cannot find symbol
+            t.resume();
+             ^
+      symbol:   method resume()
+      location: variable t of type Thread
+    2 errors
+    exit=1
+
+$ javac ThreadSuspendGone.java      (JDK 23, Corretto image)
+    /src/ThreadSuspendGone.java:8: error: cannot find symbol
+            t.suspend();
+             ^
+      symbol:   method suspend()
+      location: variable t of type Thread
+    /src/ThreadSuspendGone.java:9: error: cannot find symbol
+            t.resume();
+             ^
+      symbol:   method resume()
+      location: variable t of type Thread
+    2 errors
+    exit=1
+
+$ javac ThreadSuspendGone.java      (JDK 24, Corretto image)
+    /src/ThreadSuspendGone.java:8: error: cannot find symbol
+            t.suspend();
+             ^
+      symbol:   method suspend()
+      location: variable t of type Thread
+    /src/ThreadSuspendGone.java:9: error: cannot find symbol
+            t.resume();
+             ^
+      symbol:   method resume()
+      location: variable t of type Thread
+    2 errors
+    exit=1