diff --git a/spring-test/src/main/java/org/springframework/test/context/bean/override/convention/TestBeanOverrideProcessor.java b/spring-test/src/main/java/org/springframework/test/context/bean/override/convention/TestBeanOverrideProcessor.java
index 71c6dc4787b..68cecbae8c5 100644
--- a/spring-test/src/main/java/org/springframework/test/context/bean/override/convention/TestBeanOverrideProcessor.java
+++ b/spring-test/src/main/java/org/springframework/test/context/bean/override/convention/TestBeanOverrideProcessor.java
@@ -28,6 +28,7 @@ import java.util.Objects;
 import java.util.Set;
 
 import org.springframework.beans.factory.config.BeanDefinition;
+import org.springframework.core.MethodIntrospector;
 import org.springframework.core.ResolvableType;
 import org.springframework.lang.Nullable;
 import org.springframework.test.context.TestContextAnnotationUtils;
@@ -88,24 +89,23 @@ class TestBeanOverrideProcessor implements BeanOverrideProcessor {
 				supportedNames.contains(method.getName()) &&
 				methodReturnType.isAssignableFrom(method.getReturnType()));
 
-		List<Method> methods = findMethods(clazz, methodFilter);
+		Set<Method> methods = findMethods(clazz, methodFilter);
 		if (methods.isEmpty() && TestContextAnnotationUtils.searchEnclosingClass(clazz)) {
 			methods = findMethods(clazz.getEnclosingClass(), methodFilter);
 		}
 
-		Assert.state(!methods.isEmpty(), () -> """
+		int methodCount = methods.size();
+		Assert.state(methodCount > 0, () -> """
 				Failed to find a static test bean factory method in %s with return type %s \
 				whose name matches one of the supported candidates %s""".formatted(
 						clazz.getName(), methodReturnType.getName(), supportedNames));
 
-		long nameCount = methods.stream().map(Method::getName).distinct().count();
-		int methodCount = methods.size();
-		Assert.state(nameCount == 1, () -> """
+		Assert.state(methodCount == 1, () -> """
 				Found %d competing static test bean factory methods in %s with return type %s \
 				whose name matches one of the supported candidates %s""".formatted(
 					methodCount, clazz.getName(), methodReturnType.getName(), supportedNames));
 
-		return methods.get(0);
+		return methods.iterator().next();
 	}
 
 	@Override
@@ -138,10 +138,8 @@ class TestBeanOverrideProcessor implements BeanOverrideProcessor {
 	}
 
 
-	private static List<Method> findMethods(Class<?> clazz, MethodFilter methodFilter) {
-		List<Method> methods = new ArrayList<>();
-		ReflectionUtils.doWithMethods(clazz, methods::add, methodFilter);
-		return methods;
+	private static Set<Method> findMethods(Class<?> clazz, MethodFilter methodFilter) {
+		return MethodIntrospector.selectMethods(clazz, methodFilter);
 	}
 
 
diff --git a/spring-test/src/test/java/org/springframework/test/context/bean/override/convention/TestBeanFactory.java b/spring-test/src/test/java/org/springframework/test/context/bean/override/convention/TestBeanFactory.java
new file mode 100644
index 00000000000..eeeb05d07c7
--- /dev/null
+++ b/spring-test/src/test/java/org/springframework/test/context/bean/override/convention/TestBeanFactory.java
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2002-2024 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.test.context.bean.override.convention;
+
+/**
+ * Shared {@link TestBean @TestBean} factory methods.
+ *
+ * @author Sam Brannen
+ * @since 6.2
+ */
+interface TestBeanFactory {
+
+	public static String createTestMessage() {
+		return "test";
+	}
+
+}
diff --git a/spring-test/src/test/java/org/springframework/test/context/bean/override/convention/TestBeanInterfaceIntegrationTests.java b/spring-test/src/test/java/org/springframework/test/context/bean/override/convention/TestBeanInterfaceIntegrationTests.java
new file mode 100644
index 00000000000..95e7bbdc079
--- /dev/null
+++ b/spring-test/src/test/java/org/springframework/test/context/bean/override/convention/TestBeanInterfaceIntegrationTests.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2002-2024 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.test.context.bean.override.convention;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * {@link TestBean @TestBean} integration tests for test bean factory methods
+ * defined in implemented interfaces.
+ *
+ * @author Sam Brannen
+ * @since 6.2
+ */
+@SpringJUnitConfig
+public class TestBeanInterfaceIntegrationTests implements TestBeanFactory {
+
+	@TestBean(methodName = "createTestMessage")
+	String message;
+
+
+	@Test
+	void test() {
+		assertThat(message).isEqualTo("test");
+	}
+
+
+	@Configuration
+	static class Config {
+
+		@Bean
+		String message() {
+			return "prod";
+		}
+	}
+
+}