diff --git a/spring-context/src/test/java/org/springframework/validation/DataBinderConstructTests.java b/spring-context/src/test/java/org/springframework/validation/DataBinderConstructTests.java
index c4ee77a6f9..ccdd1f6b53 100644
--- a/spring-context/src/test/java/org/springframework/validation/DataBinderConstructTests.java
+++ b/spring-context/src/test/java/org/springframework/validation/DataBinderConstructTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2024 the original author or authors.
+ * Copyright 2002-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -225,7 +225,7 @@ class DataBinderConstructTests {
 	}
 
 
-	private static class NestedDataClass {
+	static class NestedDataClass {
 
 		private final String param1;
 
diff --git a/spring-core/src/test/java/org/springframework/aot/hint/annotation/RegisterReflectionReflectiveProcessorTests.java b/spring-core/src/test/java/org/springframework/aot/hint/annotation/RegisterReflectionReflectiveProcessorTests.java
index ba230f335f..26f9e7f0da 100644
--- a/spring-core/src/test/java/org/springframework/aot/hint/annotation/RegisterReflectionReflectiveProcessorTests.java
+++ b/spring-core/src/test/java/org/springframework/aot/hint/annotation/RegisterReflectionReflectiveProcessorTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2024 the original author or authors.
+ * Copyright 2002-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -180,10 +180,7 @@ class RegisterReflectionReflectiveProcessorTests {
 	@RegisterReflection(memberCategories = MemberCategory.INVOKE_DECLARED_CONSTRUCTORS)
 	static class AnnotatedSimplePojo {
 
-		private String test;
-
 		AnnotatedSimplePojo(String test) {
-			this.test = test;
 		}
 	}
 
diff --git a/spring-core/src/test/java/org/springframework/core/BridgeMethodResolverTests.java b/spring-core/src/test/java/org/springframework/core/BridgeMethodResolverTests.java
index 06dfcf4045..6f909c9fea 100644
--- a/spring-core/src/test/java/org/springframework/core/BridgeMethodResolverTests.java
+++ b/spring-core/src/test/java/org/springframework/core/BridgeMethodResolverTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2024 the original author or authors.
+ * Copyright 2002-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -405,7 +405,10 @@ class BridgeMethodResolverTests {
 	}
 
 
-	public abstract static class SubBar<T extends StringBuffer> extends InterBar<T> {
+	public abstract static class SubBar<T extends StringProducer> extends InterBar<T> {
+	}
+
+	public interface StringProducer extends CharSequence {
 	}
 
 
diff --git a/spring-core/src/test/java/org/springframework/core/convert/support/GenericConversionServiceTests.java b/spring-core/src/test/java/org/springframework/core/convert/support/GenericConversionServiceTests.java
index 818bd021b9..b5155635dc 100644
--- a/spring-core/src/test/java/org/springframework/core/convert/support/GenericConversionServiceTests.java
+++ b/spring-core/src/test/java/org/springframework/core/convert/support/GenericConversionServiceTests.java
@@ -570,12 +570,12 @@ class GenericConversionServiceTests {
 		conversionService.addConverter(new StringListToAListConverter());
 		conversionService.addConverter(new StringListToBListConverter());
 
-		List<ARaw> aList = (List<ARaw>) conversionService.convert(List.of("foo"),
+		List<?> aList = (List<?>) conversionService.convert(List.of("foo"),
 				TypeDescriptor.collection(List.class, TypeDescriptor.valueOf(String.class)),
 				TypeDescriptor.collection(List.class, TypeDescriptor.valueOf(ARaw.class)));
 		assertThat(aList).allMatch(e -> e instanceof ARaw);
 
-		List<BRaw> bList = (List<BRaw>) conversionService.convert(List.of("foo"),
+		List<?> bList = (List<?>) conversionService.convert(List.of("foo"),
 				TypeDescriptor.collection(List.class, TypeDescriptor.valueOf(String.class)),
 				TypeDescriptor.collection(List.class, TypeDescriptor.valueOf(BRaw.class)));
 		assertThat(bList).allMatch(e -> e instanceof BRaw);
@@ -945,9 +945,11 @@ class GenericConversionServiceTests {
 	private static class GenericBaseClass<T> {
 	}
 
+	@SuppressWarnings("rawtypes")
 	private static class ARaw extends GenericBaseClass {
 	}
 
+	@SuppressWarnings("rawtypes")
 	private static class BRaw extends GenericBaseClass {
 	}
 
diff --git a/spring-web/src/test/java/org/springframework/web/bind/support/WebExchangeDataBinderTests.java b/spring-web/src/test/java/org/springframework/web/bind/support/WebExchangeDataBinderTests.java
index 049d4a59cb..6bf41469e6 100644
--- a/spring-web/src/test/java/org/springframework/web/bind/support/WebExchangeDataBinderTests.java
+++ b/spring-web/src/test/java/org/springframework/web/bind/support/WebExchangeDataBinderTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2024 the original author or authors.
+ * Copyright 2002-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -330,7 +330,7 @@ class WebExchangeDataBinderTests {
 	}
 
 
-	private static class MultipartDataClass {
+	static class MultipartDataClass {
 
 		private final FilePart part;
 
@@ -351,4 +351,5 @@ class WebExchangeDataBinderTests {
 			return nullablePart;
 		}
 	}
+
 }