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

2026-09-21 13:55:46 +00:00
commit eecdf0e444
96 changed files with 3606 additions and 0 deletions
@@ -0,0 +1,16 @@
+$ javac --enable-preview --release 26 Lazy26.java      (JDK 26)
+exit=0
+
+$ javac --enable-preview --release 27 Lazy26.java      (JDK 27)
+Lazy26.java:12: error: cannot find symbol
+        if (!GREETING.isInitialized()) {
+                     ^
+  symbol:   method isInitialized()
+  location: variable GREETING of type LazyConstant<String>
+Lazy26.java:13: error: cannot find symbol
+            System.out.println("not yet: " + GREETING.orElse("<unset>"));
+                                                     ^
+  symbol:   method orElse(String)
+  location: variable GREETING of type LazyConstant<String>
+2 errors
+exit=1