diff --git a/spring-core/src/main/java24/org/springframework/core/type/classreading/ClassFileMethodMetadata.java b/spring-core/src/main/java24/org/springframework/core/type/classreading/ClassFileMethodMetadata.java
index be4e0d4761f..d5f9163649c 100644
--- a/spring-core/src/main/java24/org/springframework/core/type/classreading/ClassFileMethodMetadata.java
+++ b/spring-core/src/main/java24/org/springframework/core/type/classreading/ClassFileMethodMetadata.java
@@ -195,7 +195,7 @@ final class ClassFileMethodMetadata implements MethodMetadata {
 			builder.append(this.methodName);
 			builder.append('(');
 			builder.append(Stream.of(this.descriptor.parameterArray())
-					.map(desc -> desc.packageName() + "." + desc.displayName())
+					.map(ClassFileAnnotationMetadata::resolveTypeName)
 					.collect(Collectors.joining(",")));
 			builder.append(')');
 			return builder.toString();
diff --git a/spring-core/src/test/java/org/springframework/core/type/AbstractMethodMetadataTests.java b/spring-core/src/test/java/org/springframework/core/type/AbstractMethodMetadataTests.java
index 6d95c2466ad..39a12ab62bf 100644
--- a/spring-core/src/test/java/org/springframework/core/type/AbstractMethodMetadataTests.java
+++ b/spring-core/src/test/java/org/springframework/core/type/AbstractMethodMetadataTests.java
@@ -108,6 +108,12 @@ public abstract class AbstractMethodMetadataTests {
 		assertThat(getTagged(WithMethod.class).getMethodName()).isEqualTo("test");
 	}
 
+	@Test
+	void toStringMethodShowsPrimitives() {
+		assertThat(getTagged(WithMethodParameters.class).toString())
+				.isEqualTo("public java.lang.String org.springframework.core.type.AbstractMethodMetadataTests$WithMethodParameters.test(java.lang.String[],int)");
+	}
+
 	@Test
 	void getDeclaringClassReturnsDeclaringClass() {
 		assertThat(getTagged(WithMethod.class).getDeclaringClassName()).isEqualTo(WithMethod.class.getName());
@@ -269,6 +275,15 @@ public abstract class AbstractMethodMetadataTests {
 
 	}
 
+	public static class WithMethodParameters {
+
+		@Tag
+		public String test(String[] names, int age) {
+			return "";
+		}
+
+	}
+
 	public static class LocalType {
 	}