Update Eclipse JDT compiler to 4.38 / 3.43.0 / Dec 2025

Author: markt-asf

build.properties.default

@@ -144,15 +144,15 @@ base-maven.loc=https://repo.maven.apache.org/maven2
 # ----- Eclipse JDT, version 4.7 or later -----#
 # See https://cwiki.apache.org/confluence/display/TOMCAT/Managing+Tomcat%27s+Dependency+on+the+Eclipse+JDT+Core+Batch+Compiler
 #
-# Checksum is from "SHA512 Checksums for 4.36" link at
-# https://download.eclipse.org/eclipse/downloads/drops4/R-4.36-202505281830/
-# https://download.eclipse.org/eclipse/downloads/drops4/R-4.36-202505281830/checksum/eclipse-4.36-SUMSSHA512
+# Checksum is from "SHA512 Checksums for 4.38" link at
+# https://download.eclipse.org/eclipse/downloads/drops4/R-4.38-202512010920/
+# https://download.eclipse.org/eclipse/downloads/drops4/R-4.38-202512010920/checksum/eclipse-4.38-SUMSSHA512
 #
-jdt.version=4.37
-jdt.release=R-4.37-202509050730
+jdt.version=4.38
+jdt.release=R-4.38-202512010920
 jdt.checksum.enabled=true
 jdt.checksum.algorithm=SHA-512
-jdt.checksum.value=06d8974af46d81f7a03c257b54fb5854a9b9ba8ab2733db4946745142e07e7dc3e69ea864d4b011230ffb8f92243503d7ffb6ac2ddf9b747c1bbc155c55fb583
+jdt.checksum.value=41d5cea69f9bdc75eee3b5e89bf29ae9cbfe8de9f1ccdc94ea9364c182463bc4003fdee19b23c17b9ddc7c8950f4d196bb4cf3d8a5c2d1af56a769905385e906
 jdt.home=${base.path}/ecj-${jdt.version}
 jdt.jar=${jdt.home}/ecj-${jdt.version}.jar
 # The download will be moved to the archive area eventually. We are taking care of that in advance.

java/org/apache/jasper/compiler/JDTCompiler.java

@@ -310,11 +310,12 @@ public void cleanup() {
                 case "22" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_22);
                 case "23" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_23);
                 case "24" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_24);
-                case "25" ->
+                case "25" -> settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_25);
+                case "26" ->
                         // Constant not available in latest ECJ version shipped with
                         // Tomcat. May be supported in a snapshot build.
                         // This is checked against the actual version below.
-                        settings.put(CompilerOptions.OPTION_Source, "25");
+                        settings.put(CompilerOptions.OPTION_Source, "26");
                 default -> {
                     log.warn(Localizer.getMessage("jsp.warning.unknown.sourceVM", opt));
                     settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_21);
@@ -416,11 +417,15 @@ public void cleanup() {
                     settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_24);
                 }
                 case "25" -> {
+                    settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_25);
+                    settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_25);
+                }
+                case "26" -> {
                     // Constant not available in latest ECJ version shipped with
                     // Tomcat. May be supported in a snapshot build.
                     // This is checked against the actual version below.
-                    settings.put(CompilerOptions.OPTION_TargetPlatform, "25");
-                    settings.put(CompilerOptions.OPTION_Compliance, "25");
+                    settings.put(CompilerOptions.OPTION_TargetPlatform, "26");
+                    settings.put(CompilerOptions.OPTION_Compliance, "26");
                 }
                 default -> {
                     log.warn(Localizer.getMessage("jsp.warning.unknown.targetVM", opt));

res/maven/tomcat-embed-jasper.pom

@@ -48,7 +48,7 @@
     <dependency>
       <groupId>org.eclipse.jdt</groupId>
       <artifactId>ecj</artifactId>
-      <version>3.43.0</version>
+      <version>3.44.0</version>
     </dependency>
   </dependencies>
 </project>

res/maven/tomcat-jasper.pom

@@ -60,7 +60,7 @@
     <dependency>
       <groupId>org.eclipse.jdt</groupId>
       <artifactId>ecj</artifactId>
-      <version>3.43.0</version>
+      <version>3.44.0</version>
     </dependency>
     <dependency>
       <groupId>org.apache.tomcat</groupId>

webapps/docs/changelog.xml

@@ -359,6 +359,9 @@
       <update>
         Update Commons Daemon to 1.5.1. (markt)
       </update>
+      <update>
+        Update to the Eclipse JDT compiler 4.37. (markt)
+      </update>
     </changelog>
   </subsection>
 </section>