Merge to tag jdk-28+1

.jcheck/conf

@@ -1,7 +1,7 @@
 [general]
 project=jdk
 jbs=JDK
-version=27
+version=28
 
 [checks]
 error=author,committer,reviewers,merge,issues,executable,symlink,message,hg-tag,whitespace,problemlists,copyright

make/CompileDemos.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2026, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -173,41 +173,41 @@ $(BUILD_DEMO_CodePointIM_JAR): $(CODEPOINT_METAINF_SERVICE_FILE)
 
 $(eval $(call SetupBuildDemo, FileChooserDemo, \
     DEMO_SUBDIR := jfc, \
-    DISABLED_WARNINGS := rawtypes deprecation unchecked this-escape, \
+    DISABLED_WARNINGS := this-escape, \
 ))
 
 $(eval $(call SetupBuildDemo, SwingSet2, \
     DEMO_SUBDIR := jfc, \
     EXTRA_COPY_TO_JAR := .java, \
     EXTRA_MANIFEST_ATTR := SplashScreen-Image: resources/images/splash.png, \
-    DISABLED_WARNINGS := rawtypes deprecation unchecked static serial cast this-escape, \
+    DISABLED_WARNINGS := rawtypes static serial cast this-escape, \
 ))
 
 $(eval $(call SetupBuildDemo, Font2DTest, \
-    DISABLED_WARNINGS := rawtypes deprecation unchecked serial cast this-escape dangling-doc-comments, \
+    DISABLED_WARNINGS := serial dangling-doc-comments, \
     DEMO_SUBDIR := jfc, \
 ))
 
 $(eval $(call SetupBuildDemo, J2Ddemo, \
     DEMO_SUBDIR := jfc, \
     MAIN_CLASS := java2d.J2Ddemo, \
-    DISABLED_WARNINGS := rawtypes deprecation unchecked cast lossy-conversions this-escape, \
+    DISABLED_WARNINGS := cast lossy-conversions this-escape, \
     JAR_NAME := J2Ddemo, \
 ))
 
 $(eval $(call SetupBuildDemo, Metalworks, \
-    DISABLED_WARNINGS := rawtypes unchecked this-escape, \
+    DISABLED_WARNINGS := this-escape, \
     DEMO_SUBDIR := jfc, \
 ))
 
 $(eval $(call SetupBuildDemo, Notepad, \
-    DISABLED_WARNINGS := rawtypes this-escape, \
+    DISABLED_WARNINGS := this-escape, \
     DEMO_SUBDIR := jfc, \
 ))
 
 $(eval $(call SetupBuildDemo, Stylepad, \
     DEMO_SUBDIR := jfc, \
-    DISABLED_WARNINGS := rawtypes unchecked this-escape, \
+    DISABLED_WARNINGS := this-escape, \
     EXTRA_SRC_DIR := $(DEMO_SHARE_SRC)/jfc/Notepad, \
     EXCLUDE_FILES := $(DEMO_SHARE_SRC)/jfc/Notepad/README.txt, \
 ))
@@ -217,7 +217,7 @@ $(eval $(call SetupBuildDemo, SampleTree, \
 ))
 
 $(eval $(call SetupBuildDemo, TableExample, \
-    DISABLED_WARNINGS := rawtypes unchecked deprecation this-escape dangling-doc-comments, \
+    DISABLED_WARNINGS := dangling-doc-comments, \
     DEMO_SUBDIR := jfc, \
 ))
 

make/conf/version-numbers.conf

@@ -26,17 +26,17 @@
 # Default version, product, and vendor information to use,
 # unless overridden by configure
 
-DEFAULT_VERSION_FEATURE=27
+DEFAULT_VERSION_FEATURE=28
 DEFAULT_VERSION_INTERIM=0
 DEFAULT_VERSION_UPDATE=0
 DEFAULT_VERSION_PATCH=0
 DEFAULT_VERSION_EXTRA1=0
 DEFAULT_VERSION_EXTRA2=0
 DEFAULT_VERSION_EXTRA3=0
-DEFAULT_VERSION_DATE=2026-09-15
-DEFAULT_VERSION_CLASSFILE_MAJOR=71  # "`$EXPR $DEFAULT_VERSION_FEATURE + 44`"
+DEFAULT_VERSION_DATE=2027-03-27
+DEFAULT_VERSION_CLASSFILE_MAJOR=72  # "`$EXPR $DEFAULT_VERSION_FEATURE + 44`"
 DEFAULT_VERSION_CLASSFILE_MINOR=0
 DEFAULT_VERSION_DOCS_API_SINCE=11
-DEFAULT_ACCEPTABLE_BOOT_VERSIONS="26 27"
-DEFAULT_JDK_SOURCE_TARGET_VERSION=27
+DEFAULT_ACCEPTABLE_BOOT_VERSIONS="26 27 28"
+DEFAULT_JDK_SOURCE_TARGET_VERSION=28
 DEFAULT_PROMOTED_VERSION_PRE=ea

make/modules/jdk.internal.le/Java.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2020, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2020, 2026, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -25,8 +25,6 @@
 
 ################################################################################
 
-DISABLED_WARNINGS_java += dangling-doc-comments this-escape
-
 COPY += .properties .caps .txt
 
 ################################################################################

make/modules/jdk.jpackage/Java.gmk

@@ -25,8 +25,6 @@
 
 ################################################################################
 
-DISABLED_WARNINGS_java += dangling-doc-comments
-
 COPY += .gif .png .txt .spec .script .prerm .preinst \
     .postrm .postinst .list .sh .desktop .copyright .control .plist .template \
     .icns .scpt .wxs .wxl .wxi .wxf .ico .bmp .tiff .service .xsl .js

make/test/BuildMicrobenchmark.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2018, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2018, 2026, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -83,8 +83,8 @@ $(eval $(call SetupJavaCompilation, BUILD_JDK_MICROBENCHMARK, \
     SMALL_JAVA := false, \
     CLASSPATH := $(JMH_COMPILE_JARS), \
     CREATE_API_DIGEST := true, \
-    DISABLED_WARNINGS := restricted this-escape processing rawtypes removal cast \
-        serial preview dangling-doc-comments, \
+    DISABLED_WARNINGS := restricted this-escape rawtypes removal cast \
+        serial preview, \
     SRC := $(MICROBENCHMARK_SRC), \
     BIN := $(MICROBENCHMARK_CLASSES), \
     JAVAC_FLAGS := \

make/test/BuildTestLib.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2015, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2015, 2026, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -46,7 +46,6 @@ $(eval $(call SetupJavaCompilation, BUILD_WB_JAR, \
     SRC := $(TEST_LIB_SOURCE_DIR)/jdk/test/whitebox/, \
     BIN := $(TEST_LIB_SUPPORT)/wb_classes, \
     JAR := $(TEST_LIB_SUPPORT)/wb.jar, \
-    DISABLED_WARNINGS := deprecation removal preview, \
     JAVAC_FLAGS := --enable-preview, \
 ))
 

src/hotspot/share/classfile/classFileParser.cpp

@@ -154,6 +154,8 @@
 
 #define JAVA_27_VERSION                   71
 
+#define JAVA_28_VERSION                   72
+
 void ClassFileParser::set_class_bad_constant_seen(short bad_constant) {
   assert((bad_constant == JVM_CONSTANT_Module ||
           bad_constant == JVM_CONSTANT_Package) && _major_version >= JAVA_9_VERSION,

src/java.base/share/classes/java/lang/classfile/ClassFile.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2022, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -1046,6 +1046,14 @@ default List<VerifyError> verify(Path path) throws IOException {
      */
     int JAVA_27_VERSION = 71;
 
+    /**
+     * The class major version introduced by Java SE 28, {@value}.
+     *
+     * @see ClassFileFormatVersion#RELEASE_28
+     * @since 28
+     */
+    int JAVA_28_VERSION = 72;
+
     /**
      * A minor version number {@value} indicating a class uses preview features
      * of a Java SE release since 12, for major versions {@value
@@ -1057,7 +1065,7 @@ default List<VerifyError> verify(Path path) throws IOException {
      * {@return the latest class major version supported by the current runtime}
      */
     static int latestMajorVersion() {
-        return JAVA_27_VERSION;
+        return JAVA_28_VERSION;
     }
 
     /**

src/java.base/share/classes/java/lang/reflect/ClassFileFormatVersion.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2022, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -395,6 +395,18 @@ public enum ClassFileFormatVersion {
      * <cite>The Java Virtual Machine Specification, Java SE 27 Edition</cite></a>
      */
     RELEASE_27(71),
+
+    /**
+     * The version introduced by the Java Platform, Standard Edition
+     * 28.
+     *
+     * @since 28
+     *
+     * @see <a
+     * href="https://docs.oracle.com/en/java/javase/28/docs/specs/jvms/index.html">
+     * <cite>The Java Virtual Machine Specification, Java SE 28 Edition</cite></a>
+     */
+    RELEASE_28(72),
     ; // Reduce code churn when appending new constants
 
     // Note to maintainers: when adding constants for newer releases,
@@ -410,7 +422,7 @@ private ClassFileFormatVersion(int major) {
      * {@return the latest class file format version}
      */
     public static ClassFileFormatVersion latest() {
-        return RELEASE_27;
+        return RELEASE_28;
     }
 
     /**

src/java.compiler/share/classes/javax/lang/model/SourceVersion.java

@@ -89,6 +89,7 @@ public enum SourceVersion {
      *      switch in fourth preview)
      *  27: no changes (primitive Types in Patterns, instanceof, and
      *      switch in fifth preview)
+     *  28: tbd
      */
 
     /**
@@ -498,6 +499,18 @@ public enum SourceVersion {
      * <cite>The Java Language Specification, Java SE 27 Edition</cite></a>
      */
     RELEASE_27,
+
+    /**
+     * The version introduced by the Java Platform, Standard Edition
+     * 28.
+     *
+     * @since 28
+     *
+     * @see <a
+     * href="https://docs.oracle.com/en/java/javase/28/docs/specs/jls/index.html">
+     * <cite>The Java Language Specification, Java SE 28 Edition</cite></a>
+     */
+    RELEASE_28,
     ; // Reduce code churn when appending new constants
 
     // Note that when adding constants for newer releases, the
@@ -507,7 +520,7 @@ public enum SourceVersion {
      * {@return the latest source version that can be modeled}
      */
     public static SourceVersion latest() {
-        return RELEASE_27;
+        return RELEASE_28;
     }
 
     private static final SourceVersion latestSupported = getLatestSupported();
@@ -522,7 +535,7 @@ public static SourceVersion latest() {
     private static SourceVersion getLatestSupported() {
         int intVersion = Runtime.version().feature();
         return (intVersion >= 11) ?
-            valueOf("RELEASE_" + Math.min(27, intVersion)):
+            valueOf("RELEASE_" + Math.min(28, intVersion)):
             RELEASE_10;
     }
 

src/java.compiler/share/classes/javax/lang/model/util/AbstractAnnotationValueVisitor14.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -44,7 +44,7 @@
  * @see AbstractAnnotationValueVisitor9
  * @since 14
  */
-@SupportedSourceVersion(RELEASE_27)
+@SupportedSourceVersion(RELEASE_28)
 public abstract class AbstractAnnotationValueVisitor14<R, P> extends AbstractAnnotationValueVisitor9<R, P> {
 
     /**

src/java.compiler/share/classes/javax/lang/model/util/AbstractAnnotationValueVisitorPreview.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -50,7 +50,7 @@
  * @see AbstractAnnotationValueVisitor14
  * @since 23
  */
-@SupportedSourceVersion(RELEASE_27)
+@SupportedSourceVersion(RELEASE_28)
 @PreviewFeature(feature=PreviewFeature.Feature.LANGUAGE_MODEL, reflective=true)
 public abstract class AbstractAnnotationValueVisitorPreview<R, P> extends AbstractAnnotationValueVisitor14<R, P> {
 

src/java.compiler/share/classes/javax/lang/model/util/AbstractElementVisitor14.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -50,7 +50,7 @@
  * @see AbstractElementVisitor9
  * @since 16
  */
-@SupportedSourceVersion(RELEASE_27)
+@SupportedSourceVersion(RELEASE_28)
 public abstract class AbstractElementVisitor14<R, P> extends AbstractElementVisitor9<R, P> {
     /**
      * Constructor for concrete subclasses to call.

src/java.compiler/share/classes/javax/lang/model/util/AbstractElementVisitorPreview.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -53,7 +53,7 @@
  * @see AbstractElementVisitor14
  * @since 23
  */
-@SupportedSourceVersion(RELEASE_27)
+@SupportedSourceVersion(RELEASE_28)
 @PreviewFeature(feature=PreviewFeature.Feature.LANGUAGE_MODEL, reflective=true)
 public abstract class AbstractElementVisitorPreview<R, P> extends AbstractElementVisitor14<R, P> {
     /**

src/java.compiler/share/classes/javax/lang/model/util/AbstractTypeVisitor14.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -47,7 +47,7 @@
  * @see AbstractTypeVisitor9
  * @since 14
  */
-@SupportedSourceVersion(RELEASE_27)
+@SupportedSourceVersion(RELEASE_28)
 public abstract class AbstractTypeVisitor14<R, P> extends AbstractTypeVisitor9<R, P> {
     /**
      * Constructor for concrete subclasses to call.

src/java.compiler/share/classes/javax/lang/model/util/AbstractTypeVisitorPreview.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -53,7 +53,7 @@
  * @see AbstractTypeVisitor14
  * @since 23
  */
-@SupportedSourceVersion(RELEASE_27)
+@SupportedSourceVersion(RELEASE_28)
 @PreviewFeature(feature=PreviewFeature.Feature.LANGUAGE_MODEL, reflective=true)
 public abstract class AbstractTypeVisitorPreview<R, P> extends AbstractTypeVisitor14<R, P> {
     /**

src/java.compiler/share/classes/javax/lang/model/util/ElementKindVisitor14.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -61,7 +61,7 @@
  * @see ElementKindVisitor9
  * @since 16
  */
-@SupportedSourceVersion(RELEASE_27)
+@SupportedSourceVersion(RELEASE_28)
 public class ElementKindVisitor14<R, P> extends ElementKindVisitor9<R, P> {
     /**
      * Constructor for concrete subclasses; uses {@code null} for the