diff --git a/gradle/ide.gradle b/gradle/ide.gradle
index a6d561e76b3..c39673c3a84 100644
--- a/gradle/ide.gradle
+++ b/gradle/ide.gradle
@@ -68,14 +68,16 @@ eclipse.classpath.file.whenMerged {
 	}
 }
 
-// Remove Java 21 classpath entries, since we currently use Java 17
-// within Eclipse. Consequently, Java 21 features managed via the
-// me.champeau.mrjar plugin cannot be built or tested within Eclipse.
+// Remove classpath entries for multi-release source sets (such as "src/main/java21")
+// and their Gradle output (such as "build/classes/java/java21"), since an Eclipse
+// project supports only a single Java compliance level. Consequently, features
+// managed via the multiReleaseJar plugin cannot be built or tested within Eclipse.
 eclipse.classpath.file.whenMerged { classpath ->
-	classpath.entries.removeAll { it.path =~ /src\/(main|test)\/java(21|24)/ }
+	classpath.entries.removeAll { it.path =~ /src\/(main|test)\/java\d+/ }
+	classpath.entries.removeAll { it.path =~ /build\/classes\/[^\/]+\/java\d+(Test)?$/ }
 }
 
-// Remove classpath entries for non-existent libraries added by the me.champeau.mrjar
+// Remove classpath entries for non-existent libraries added by the multiReleaseJar
 // plugin, such as "spring-core/build/classes/kotlin/java21".
 eclipse.classpath.file.whenMerged {
 	entries.findAll { it instanceof Library && !file(it.path).exists() }.each {
diff --git a/import-into-eclipse.md b/import-into-eclipse.md
index 65f6bf7351f..b486406c945 100644
--- a/import-into-eclipse.md
+++ b/import-into-eclipse.md
@@ -53,6 +53,11 @@ within your locally cloned `spring-framework` working directory._
      compile `spring-core` and generate JAXB types for `spring-oxm`.
 1. `spring-aspects` does not compile due to references to aspect types unknown to Eclipse.
    - If you installed _AJDT_ into Eclipse it should work.
+1. The Java 21 and Java 24 multi-release sources in `spring-core` (`src/main/java21`,
+   `src/main/java24`, and `src/test/java21`) are not configured as source folders in
+   Eclipse, since an Eclipse project supports only a single Java compliance level.
+   - Use `./gradlew :spring-core:java21Test` or `./gradlew :spring-core:java24Test` to
+     build and test those sources from the command line.
 1. While JUnit tests pass from the command line with Gradle, some may fail when run from
    the IDE.
    - Resolving this is a work in progress.