8370890: Start of release updates for JDK 27

.jcheck/conf

@@ -1,7 +1,7 @@
 [general]
 project=jdk
 jbs=JDK
-version=26
+version=27
 
 [checks]
 error=author,committer,reviewers,merge,issues,executable,symlink,message,hg-tag,whitespace,problemlists,copyright

bin/generate-symbol-data.sh

@@ -38,7 +38,7 @@
 #   directory.
 # - open a terminal program and run these commands:
 #     cd "${JDK_CHECKOUT}"/src/jdk.compiler/share/data/symbols
-#     bash ../../../../../make/scripts/generate-symbol-data.sh "${JDK_N_INSTALL}"
+#     bash ../../../../../bin/generate-symbol-data.sh "${JDK_N_INSTALL}"
 # - this command will generate or update data for "--release N" into the ${JDK_CHECKOUT}/src/jdk.compiler/share/data/symbols
 #   directory, updating all registration necessary. If the goal was to update the data, and there are no
 #   new or changed files in the ${JDK_CHECKOUT}/src/jdk.compiler/share/data/symbols directory after running this script,

make/conf/version-numbers.conf

@@ -26,17 +26,17 @@
 # Default version, product, and vendor information to use,
 # unless overridden by configure
 
-DEFAULT_VERSION_FEATURE=26
+DEFAULT_VERSION_FEATURE=27
 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=2026-03-17
-DEFAULT_VERSION_CLASSFILE_MAJOR=70  # "`$EXPR $DEFAULT_VERSION_FEATURE + 44`"
+DEFAULT_VERSION_DATE=2026-09-15
+DEFAULT_VERSION_CLASSFILE_MAJOR=71  # "`$EXPR $DEFAULT_VERSION_FEATURE + 44`"
 DEFAULT_VERSION_CLASSFILE_MINOR=0
 DEFAULT_VERSION_DOCS_API_SINCE=11
 DEFAULT_ACCEPTABLE_BOOT_VERSIONS="25 26"
-DEFAULT_JDK_SOURCE_TARGET_VERSION=26
+DEFAULT_JDK_SOURCE_TARGET_VERSION=27
 DEFAULT_PROMOTED_VERSION_PRE=ea

src/hotspot/share/classfile/classFileParser.cpp

@@ -156,6 +156,8 @@
 
 #define JAVA_26_VERSION                   70
 
+#define JAVA_27_VERSION                   71
+
 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

@@ -1038,6 +1038,14 @@ default List<VerifyError> verify(Path path) throws IOException {
      */
     int JAVA_26_VERSION = 70;
 
+    /**
+     * The class major version introduced by Java SE 27, {@value}.
+     *
+     * @see ClassFileFormatVersion#RELEASE_27
+     * @since 27
+     */
+    int JAVA_27_VERSION = 71;
+
     /**
      * A minor version number {@value} indicating a class uses preview features
      * of a Java SE release since 12, for major versions {@value
@@ -1049,7 +1057,7 @@ default List<VerifyError> verify(Path path) throws IOException {
      * {@return the latest class major version supported by the current runtime}
      */
     static int latestMajorVersion() {
-        return JAVA_26_VERSION;
+        return JAVA_27_VERSION;
     }
 
     /**

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

@@ -379,10 +379,22 @@ public enum ClassFileFormatVersion {
      * @since 26
      *
      * @see <a
-     * href="https://docs.oracle.com/javase/specs/jvms/se26/html/index.html">
+     * href="https://docs.oracle.com/en/java/javase/26/docs/specs/jvms/index.html">
      * <cite>The Java Virtual Machine Specification, Java SE 26 Edition</cite></a>
      */
     RELEASE_26(70),
+
+    /**
+     * The version introduced by the Java Platform, Standard Edition
+     * 27.
+     *
+     * @since 27
+     *
+     * @see <a
+     * href="https://docs.oracle.com/en/java/javase/27/docs/specs/jvms/index.html">
+     * <cite>The Java Virtual Machine Specification, Java SE 27 Edition</cite></a>
+     */
+    RELEASE_27(71),
     ; // Reduce code churn when appending new constants
 
     // Note to maintainers: when adding constants for newer releases,
@@ -398,7 +410,7 @@ private ClassFileFormatVersion(int major) {
      * {@return the latest class file format version}
      */
     public static ClassFileFormatVersion latest() {
-        return RELEASE_26;
+        return RELEASE_27;
     }
 
     /**

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

@@ -480,6 +480,18 @@ public enum SourceVersion {
      * <cite>The Java Language Specification, Java SE 26 Edition</cite></a>
      */
     RELEASE_26,
+
+    /**
+     * The version introduced by the Java Platform, Standard Edition
+     * 27.
+     *
+     * @since 27
+     *
+     * @see <a
+     * href="https://docs.oracle.com/javase/specs/jls/se27/html/index.html">
+     * <cite>The Java Language Specification, Java SE 27 Edition</cite></a>
+     */
+    RELEASE_27,
     ; // Reduce code churn when appending new constants
 
     // Note that when adding constants for newer releases, the
@@ -489,7 +501,7 @@ public enum SourceVersion {
      * {@return the latest source version that can be modeled}
      */
     public static SourceVersion latest() {
-        return RELEASE_26;
+        return RELEASE_27;
     }
 
     private static final SourceVersion latestSupported = getLatestSupported();
@@ -504,7 +516,7 @@ public static SourceVersion latest() {
     private static SourceVersion getLatestSupported() {
         int intVersion = Runtime.version().feature();
         return (intVersion >= 11) ?
-            valueOf("RELEASE_" + Math.min(26, intVersion)):
+            valueOf("RELEASE_" + Math.min(27, intVersion)):
             RELEASE_10;
     }
 

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

@@ -44,7 +44,7 @@
  * @see AbstractAnnotationValueVisitor9
  * @since 14
  */
-@SupportedSourceVersion(RELEASE_26)
+@SupportedSourceVersion(RELEASE_27)
 public abstract class AbstractAnnotationValueVisitor14<R, P> extends AbstractAnnotationValueVisitor9<R, P> {
 
     /**

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

@@ -50,7 +50,7 @@
  * @see AbstractAnnotationValueVisitor14
  * @since 23
  */
-@SupportedSourceVersion(RELEASE_26)
+@SupportedSourceVersion(RELEASE_27)
 @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

@@ -50,7 +50,7 @@
  * @see AbstractElementVisitor9
  * @since 16
  */
-@SupportedSourceVersion(RELEASE_26)
+@SupportedSourceVersion(RELEASE_27)
 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

@@ -53,7 +53,7 @@
  * @see AbstractElementVisitor14
  * @since 23
  */
-@SupportedSourceVersion(RELEASE_26)
+@SupportedSourceVersion(RELEASE_27)
 @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

@@ -47,7 +47,7 @@
  * @see AbstractTypeVisitor9
  * @since 14
  */
-@SupportedSourceVersion(RELEASE_26)
+@SupportedSourceVersion(RELEASE_27)
 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

@@ -53,7 +53,7 @@
  * @see AbstractTypeVisitor14
  * @since 23
  */
-@SupportedSourceVersion(RELEASE_26)
+@SupportedSourceVersion(RELEASE_27)
 @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

@@ -61,7 +61,7 @@
  * @see ElementKindVisitor9
  * @since 16
  */
-@SupportedSourceVersion(RELEASE_26)
+@SupportedSourceVersion(RELEASE_27)
 public class ElementKindVisitor14<R, P> extends ElementKindVisitor9<R, P> {
     /**
      * Constructor for concrete subclasses; uses {@code null} for the

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

@@ -67,7 +67,7 @@
  * @see ElementKindVisitor14
  * @since 23
  */
-@SupportedSourceVersion(RELEASE_26)
+@SupportedSourceVersion(RELEASE_27)
 @PreviewFeature(feature=PreviewFeature.Feature.LANGUAGE_MODEL, reflective=true)
 public class ElementKindVisitorPreview<R, P> extends ElementKindVisitor14<R, P> {
     /**

src/java.compiler/share/classes/javax/lang/model/util/ElementScanner14.java

@@ -77,7 +77,7 @@
  * @see ElementScanner9
  * @since 16
  */
-@SupportedSourceVersion(RELEASE_26)
+@SupportedSourceVersion(RELEASE_27)
 public class ElementScanner14<R, P> extends ElementScanner9<R, P> {
     /**
      * Constructor for concrete subclasses; uses {@code null} for the

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

@@ -81,7 +81,7 @@
  * @see ElementScanner14
  * @since 23
  */
-@SupportedSourceVersion(RELEASE_26)
+@SupportedSourceVersion(RELEASE_27)
 @PreviewFeature(feature=PreviewFeature.Feature.LANGUAGE_MODEL, reflective=true)
 public class ElementScannerPreview<R, P> extends ElementScanner14<R, P> {
     /**

src/java.compiler/share/classes/javax/lang/model/util/SimpleAnnotationValueVisitor14.java

@@ -52,7 +52,7 @@
  * @see SimpleAnnotationValueVisitor9
  * @since 14
  */
-@SupportedSourceVersion(RELEASE_26)
+@SupportedSourceVersion(RELEASE_27)
 public class SimpleAnnotationValueVisitor14<R, P> extends SimpleAnnotationValueVisitor9<R, P> {
     /**
      * Constructor for concrete subclasses; uses {@code null} for the

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

@@ -58,7 +58,7 @@
  * @see SimpleAnnotationValueVisitor14
  * @since 23
  */
-@SupportedSourceVersion(RELEASE_26)
+@SupportedSourceVersion(RELEASE_27)
 @PreviewFeature(feature=PreviewFeature.Feature.LANGUAGE_MODEL, reflective=true)
 public class SimpleAnnotationValueVisitorPreview<R, P> extends SimpleAnnotationValueVisitor14<R, P> {
     /**

src/java.compiler/share/classes/javax/lang/model/util/SimpleElementVisitor14.java

@@ -58,7 +58,7 @@
  * @see SimpleElementVisitor9
  * @since 16
  */
-@SupportedSourceVersion(RELEASE_26)
+@SupportedSourceVersion(RELEASE_27)
 public class SimpleElementVisitor14<R, P> extends SimpleElementVisitor9<R, P> {
     /**
      * Constructor for concrete subclasses; uses {@code null} for the

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

@@ -61,7 +61,7 @@
  * @see SimpleElementVisitor14
  * @since 23
  */
-@SupportedSourceVersion(RELEASE_26)
+@SupportedSourceVersion(RELEASE_27)
 @PreviewFeature(feature=PreviewFeature.Feature.LANGUAGE_MODEL, reflective=true)
 public class SimpleElementVisitorPreview<R, P> extends SimpleElementVisitor14<R, P> {
     /**

src/java.compiler/share/classes/javax/lang/model/util/SimpleTypeVisitor14.java

@@ -56,7 +56,7 @@
  * @see SimpleTypeVisitor9
  * @since 14
  */
-@SupportedSourceVersion(RELEASE_26)
+@SupportedSourceVersion(RELEASE_27)
 public class SimpleTypeVisitor14<R, P> extends SimpleTypeVisitor9<R, P> {
     /**
      * Constructor for concrete subclasses; uses {@code null} for the

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

@@ -62,7 +62,7 @@
  * @see SimpleTypeVisitor14
  * @since 23
  */
-@SupportedSourceVersion(RELEASE_26)
+@SupportedSourceVersion(RELEASE_27)
 @PreviewFeature(feature=PreviewFeature.Feature.LANGUAGE_MODEL, reflective=true)
 public class SimpleTypeVisitorPreview<R, P> extends SimpleTypeVisitor14<R, P> {
     /**

src/java.compiler/share/classes/javax/lang/model/util/TypeKindVisitor14.java

@@ -61,7 +61,7 @@
  * @see TypeKindVisitor9
  * @since 14
  */
-@SupportedSourceVersion(RELEASE_26)
+@SupportedSourceVersion(RELEASE_27)
 public class TypeKindVisitor14<R, P> extends TypeKindVisitor9<R, P> {
     /**
      * Constructor for concrete subclasses to call; uses {@code null}

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

@@ -66,7 +66,7 @@
  * @see TypeKindVisitor14
  * @since 23
  */
-@SupportedSourceVersion(RELEASE_26)
+@SupportedSourceVersion(RELEASE_27)
 @PreviewFeature(feature=PreviewFeature.Feature.LANGUAGE_MODEL, reflective=true)
 public class TypeKindVisitorPreview<R, P> extends TypeKindVisitor14<R, P> {
     /**

src/jdk.compiler/share/classes/com/sun/tools/javac/code/Source.java

@@ -158,6 +158,11 @@ public enum Source {
       * 26, tbd
       */
     JDK26("26"),
+
+    /**
+      * 27, tbd
+      */
+    JDK27("27"),
     ; // Reduce code churn when appending new constants
 
     private static final Context.Key<Source> sourceKey = new Context.Key<>();
@@ -210,6 +215,7 @@ public boolean isSupported() {
 
     public Target requiredTarget() {
         return switch(this) {
+        case JDK27  -> Target.JDK1_27;
         case JDK26  -> Target.JDK1_26;
         case JDK25  -> Target.JDK1_25;
         case JDK24  -> Target.JDK1_24;
@@ -366,6 +372,7 @@ public static SourceVersion toSourceVersion(Source source) {
         case JDK24  -> RELEASE_24;
         case JDK25  -> RELEASE_25;
         case JDK26  -> RELEASE_26;
+        case JDK27  -> RELEASE_27;
         default     -> null;
         };
     }

src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/ClassFile.java

@@ -130,6 +130,7 @@ public enum Version {
         V68(68, 0),   // JDK 24
         V69(69, 0),   // JDK 25
         V70(70, 0),   // JDK 26
+        V71(71, 0),   // JDK 27
         ; // Reduce code churn when appending new constants
         Version(int major, int minor) {
             this.major = major;

src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/Target.java

@@ -113,6 +113,9 @@ public enum Target {
 
     /** JDK 26. */
     JDK1_26("26", 70, 0),
+
+    /** JDK 27. */
+    JDK1_27("27", 71, 0),
     ; // Reduce code churn when appending new constants
 
     private static final Context.Key<Target> targetKey = new Context.Key<>();

src/jdk.compiler/share/classes/com/sun/tools/javac/processing/PrintingProcessor.java

@@ -55,7 +55,7 @@
  * deletion without notice.</b>
  */
 @SupportedAnnotationTypes("*")
-@SupportedSourceVersion(SourceVersion.RELEASE_26)
+@SupportedSourceVersion(SourceVersion.RELEASE_27)
 public class PrintingProcessor extends AbstractProcessor {
     PrintWriter writer;
 

src/jdk.compiler/share/data/symbols/README

@@ -1,3 +1,3 @@
 This directory contains history data for -release.
 
-Please see $JDK_TOP_DIR/make/scripts/generate-symbol-data.sh for main usage.
+Please see $JDK_TOP_DIR/bin/generate-symbol-data.sh for main usage.