Use modern language features in tests

spring-beans/src/test/java/org/springframework/beans/support/PagedListHolderTests.java

@@ -195,14 +195,22 @@ public class PagedListHolderTests {
 
 		@Override
 		public boolean equals(Object o) {
-			if (this == o) return true;
-			if (!(o instanceof MockFilter)) return false;
-
-			final MockFilter mockFilter = (MockFilter) o;
-
-			if (!age.equals(mockFilter.age)) return false;
-			if (!extendedInfo.equals(mockFilter.extendedInfo)) return false;
-			if (!name.equals(mockFilter.name)) return false;
+			if (this == o) {
+				return true;
+			}
+			if (!(o instanceof MockFilter mockFilter)) {
+				return false;
+			}
+
+			if (!age.equals(mockFilter.age)) {
+				return false;
+			}
+			if (!extendedInfo.equals(mockFilter.extendedInfo)) {
+				return false;
+			}
+			if (!name.equals(mockFilter.name)) {
+				return false;
+			}
 
 			return true;
 		}

spring-beans/src/testFixtures/java/org/springframework/beans/testfixture/beans/NestedTestBean.java

@@ -44,10 +44,9 @@ public class NestedTestBean implements INestedTestBean {
 
 	@Override
 	public boolean equals(Object obj) {
-		if (!(obj instanceof NestedTestBean)) {
+		if (!(obj instanceof NestedTestBean ntb)) {
 			return false;
 		}
-		NestedTestBean ntb = (NestedTestBean) obj;
 		return this.company.equals(ntb.company);
 	}
 

spring-beans/src/testFixtures/java/org/springframework/beans/testfixture/beans/SerializablePerson.java

@@ -64,10 +64,9 @@ public class SerializablePerson implements Person, Serializable {
 
 	@Override
 	public boolean equals(Object other) {
-		if (!(other instanceof SerializablePerson)) {
+		if (!(other instanceof SerializablePerson p)) {
 			return false;
 		}
-		SerializablePerson p = (SerializablePerson) other;
 		return p.age == age && ObjectUtils.nullSafeEquals(name, p.name);
 	}
 

spring-beans/src/testFixtures/java/org/springframework/beans/testfixture/beans/TestBean.java

@@ -468,10 +468,9 @@ public class TestBean implements BeanNameAware, BeanFactoryAware, ITestBean, IOt
 		if (this == other) {
 			return true;
 		}
-		if (!(other instanceof TestBean)) {
+		if (!(other instanceof TestBean tb2)) {
 			return false;
 		}
-		TestBean tb2 = (TestBean) other;
 		return (ObjectUtils.nullSafeEquals(this.name, tb2.name) && this.age == tb2.age);
 	}
 

spring-beans/src/testFixtures/java/org/springframework/beans/testfixture/factory/xml/AbstractBeanFactoryTests.java

@@ -261,11 +261,9 @@ public abstract class AbstractBeanFactoryTests {
 	@Test
 	public void aliasing() {
 		BeanFactory bf = getBeanFactory();
-		if (!(bf instanceof ConfigurableBeanFactory)) {
+		if (!(bf instanceof ConfigurableBeanFactory cbf)) {
 			return;
 		}
-		ConfigurableBeanFactory cbf = (ConfigurableBeanFactory) bf;
-
 		String alias = "rods alias";
 
 		assertThatExceptionOfType(NoSuchBeanDefinitionException.class).isThrownBy(() ->

spring-context/src/test/java/org/springframework/context/annotation/ConfigurationClassPostProcessorTests.java

@@ -1358,7 +1358,7 @@ class ConfigurationClassPostProcessorTests {
 
 		@Bean
 		public Repository<String> stringRepo() {
-			return new Repository<String>() {
+			return new Repository<>() {
 				@Override
 				public String toString() {
 					return "Repository<String>";
@@ -1368,7 +1368,7 @@ class ConfigurationClassPostProcessorTests {
 
 		@Bean
 		public Repository<Integer> integerRepo() {
-			return new Repository<Integer>() {
+			return new Repository<>() {
 				@Override
 				public String toString() {
 					return "Repository<Integer>";
@@ -1378,7 +1378,7 @@ class ConfigurationClassPostProcessorTests {
 
 		@Bean
 		public Repository<?> genericRepo() {
-			return new Repository<Object>() {
+			return new Repository<>() {
 				@Override
 				public String toString() {
 					return "Repository<Object>";
@@ -1423,7 +1423,7 @@ class ConfigurationClassPostProcessorTests {
 		@Bean
 		@Scope("prototype")
 		public Repository<String> stringRepo() {
-			return new Repository<String>() {
+			return new Repository<>() {
 				@Override
 				public String toString() {
 					return "Repository<String>";
@@ -1434,7 +1434,7 @@ class ConfigurationClassPostProcessorTests {
 		@Bean
 		@Scope("prototype")
 		public Repository<Integer> integerRepo() {
-			return new Repository<Integer>() {
+			return new Repository<>() {
 				@Override
 				public String toString() {
 					return "Repository<Integer>";
@@ -1446,7 +1446,7 @@ class ConfigurationClassPostProcessorTests {
 		@Scope("prototype")
 		@SuppressWarnings("rawtypes")
 		public Repository genericRepo() {
-			return new Repository<Object>() {
+			return new Repository<>() {
 				@Override
 				public String toString() {
 					return "Repository<Object>";
@@ -1468,7 +1468,7 @@ class ConfigurationClassPostProcessorTests {
 		@Bean
 		@Scope(scopeName = "prototype", proxyMode = ScopedProxyMode.TARGET_CLASS)
 		public Repository<String> stringRepo() {
-			return new Repository<String>() {
+			return new Repository<>() {
 				@Override
 				public String toString() {
 					return "Repository<String>";
@@ -1479,7 +1479,7 @@ class ConfigurationClassPostProcessorTests {
 		@Bean
 		@PrototypeScoped
 		public Repository<Integer> integerRepo() {
-			return new Repository<Integer>() {
+			return new Repository<>() {
 				@Override
 				public String toString() {
 					return "Repository<Integer>";

spring-context/src/test/java/org/springframework/context/annotation/ConfigurationWithFactoryBeanBeanEarlyDeductionTests.java

@@ -95,7 +95,7 @@ public class ConfigurationWithFactoryBeanBeanEarlyDeductionTests {
 		beanDefinition.setFactoryBeanName("factoryBean");
 		beanDefinition.setFactoryMethodName("myBean");
 		GenericApplicationContext context = new GenericApplicationContext();
-		try {
+		try (context) {
 			context.registerBeanDefinition("factoryBean", factoryBeanDefinition);
 			context.registerBeanDefinition("myBean", beanDefinition);
 			NameCollectingBeanFactoryPostProcessor postProcessor = new NameCollectingBeanFactoryPostProcessor();
@@ -103,9 +103,6 @@ public class ConfigurationWithFactoryBeanBeanEarlyDeductionTests {
 			context.refresh();
 			assertContainsMyBeanName(postProcessor.getNames());
 		}
-		finally {
-			context.close();
-		}
 	}
 
 	private void assertPostFreeze(Class<?> configurationClass) {
@@ -118,16 +115,13 @@ public class ConfigurationWithFactoryBeanBeanEarlyDeductionTests {
 			BeanFactoryPostProcessor... postProcessors) {
 		NameCollectingBeanFactoryPostProcessor postProcessor = new NameCollectingBeanFactoryPostProcessor();
 		AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
-		try {
+		try (context) {
 			Arrays.stream(postProcessors).forEach(context::addBeanFactoryPostProcessor);
 			context.addBeanFactoryPostProcessor(postProcessor);
 			context.register(configurationClass);
 			context.refresh();
 			assertContainsMyBeanName(postProcessor.getNames());
 		}
-		finally {
-			context.close();
-		}
 	}
 
 	private void assertContainsMyBeanName(AnnotationConfigApplicationContext context) {

spring-context/src/test/java/org/springframework/context/annotation/PropertySourceAnnotationTests.java

@@ -327,7 +327,7 @@ class PropertySourceAnnotationTests {
 		@Bean
 		FactoryBean<TestBean> testBean() {
 			final String name = env.getProperty("testbean.name");
-			return new FactoryBean<TestBean>() {
+			return new FactoryBean<>() {
 				@Override
 				public TestBean getObject() {
 					return new TestBean(name);
@@ -417,7 +417,7 @@ class PropertySourceAnnotationTests {
 		@Override
 		public org.springframework.core.env.PropertySource<?> createPropertySource(String name, EncodedResource resource) throws IOException {
 			Properties props = PropertiesLoaderUtils.loadProperties(resource);
-			return new org.springframework.core.env.PropertySource<Properties>("my" + name, props) {
+			return new org.springframework.core.env.PropertySource<>("my" + name, props) {
 				@Override
 				public Object getProperty(String name) {
 					String value = props.getProperty(name);

spring-context/src/test/java/org/springframework/context/annotation/Spr15275Tests.java

@@ -78,7 +78,7 @@ public class Spr15275Tests {
 
 		@Bean
 		public FactoryBean<Foo> foo() {
-			return new FactoryBean<Foo>() {
+			return new FactoryBean<>() {
 				@Override
 				public Foo getObject() {
 					return new Foo("x");
@@ -103,7 +103,7 @@ public class Spr15275Tests {
 
 		@Bean
 		public FactoryBean<Foo> foo() {
-			return new AbstractFactoryBean<Foo>() {
+			return new AbstractFactoryBean<>() {
 				@Override
 				public Foo createInstance() {
 					return new Foo("x");
@@ -128,7 +128,7 @@ public class Spr15275Tests {
 
 		@Bean
 		public FactoryBean<FooInterface> foo() {
-			return new AbstractFactoryBean<FooInterface>() {
+			return new AbstractFactoryBean<>() {
 				@Override
 				public FooInterface createInstance() {
 					return new Foo("x");
@@ -153,7 +153,7 @@ public class Spr15275Tests {
 
 		@Bean
 		public AbstractFactoryBean<FooInterface> foo() {
-			return new AbstractFactoryBean<FooInterface>() {
+			return new AbstractFactoryBean<>() {
 				@Override
 				public FooInterface createInstance() {
 					return new Foo("x");

spring-context/src/test/java/org/springframework/context/annotation/Spr16179Tests.java

@@ -53,7 +53,7 @@ public class Spr16179Tests {
 
 		@Bean
 		Assembler<SomeType> someAssembler() {
-			return new Assembler<SomeType>() {};
+			return new Assembler<>() {};
 		}
 	}
 

spring-context/src/test/java/org/springframework/context/event/AnnotationDrivenEventListenerTests.java

@@ -774,8 +774,7 @@ class AnnotationDrivenEventListenerTests {
 			if (event.content == null) {
 				return null;
 			}
-			else if (event.content instanceof String) {
-				String s = (String) event.content;
+			else if (event.content instanceof String s) {
 				if (s.equals("String")) {
 					return event.content;
 				}

spring-context/src/test/java/org/springframework/context/support/ConversionServiceFactoryBeanTests.java

@@ -64,7 +64,7 @@ public class ConversionServiceFactoryBeanTests {
 		converters.add(new ConverterFactory<String, Bar>() {
 			@Override
 			public <T extends Bar> Converter<String, T> getConverter(Class<T> targetType) {
-				return new Converter<String, T> () {
+				return new Converter<> () {
 					@SuppressWarnings("unchecked")
 					@Override
 					public T convert(String source) {

spring-context/src/test/java/org/springframework/context/support/PropertySourcesPlaceholderConfigurerTests.java

@@ -265,7 +265,7 @@ public class PropertySourcesPlaceholderConfigurerTests {
 
 		PropertySourcesPlaceholderConfigurer ppc = new PropertySourcesPlaceholderConfigurer();
 
-		PropertySource<?> ps = new PropertySource<Object>("simplePropertySource", new Object()) {
+		PropertySource<?> ps = new PropertySource<>("simplePropertySource", new Object()) {
 			@Override
 			public Object getProperty(String key) {
 				return "bar";

spring-context/src/test/java/org/springframework/jmx/export/NotificationListenerTests.java

@@ -168,8 +168,7 @@ public class NotificationListenerTests extends AbstractMBeanServerTests {
 		NotificationListenerBean listenerBean = new NotificationListenerBean();
 		listenerBean.setNotificationListener(listener);
 		listenerBean.setNotificationFilter(notification -> {
-			if (notification instanceof AttributeChangeNotification) {
-				AttributeChangeNotification changeNotification = (AttributeChangeNotification) notification;
+			if (notification instanceof AttributeChangeNotification changeNotification) {
 				return "Name".equals(changeNotification.getAttributeName());
 			}
 			else {
@@ -450,8 +449,7 @@ public class NotificationListenerTests extends AbstractMBeanServerTests {
 
 		@Override
 		public void handleNotification(Notification notification, Object handback) {
-			if (notification instanceof AttributeChangeNotification) {
-				AttributeChangeNotification attNotification = (AttributeChangeNotification) notification;
+			if (notification instanceof AttributeChangeNotification attNotification) {
 				String attributeName = attNotification.getAttributeName();
 
 				Integer currentCount = (Integer) this.attributeCounts.get(attributeName);

spring-context/src/test/java/org/springframework/scheduling/support/BitsCronFieldTests.java

@@ -108,7 +108,7 @@ class BitsCronFieldTests {
 	}
 
 	private static Condition<BitsCronField> set(int... indices) {
-		return new Condition<BitsCronField>(String.format("set bits %s", Arrays.toString(indices))) {
+		return new Condition<>(String.format("set bits %s", Arrays.toString(indices))) {
 			@Override
 			public boolean matches(BitsCronField value) {
 				for (int index : indices) {
@@ -122,7 +122,7 @@ class BitsCronFieldTests {
 	}
 
 	private static Condition<BitsCronField> setRange(int min, int max) {
-		return new Condition<BitsCronField>(String.format("set range %d-%d", min, max)) {
+		return new Condition<>(String.format("set range %d-%d", min, max)) {
 			@Override
 			public boolean matches(BitsCronField value) {
 				for (int i = min; i < max; i++) {
@@ -136,7 +136,7 @@ class BitsCronFieldTests {
 	}
 
 	private static Condition<BitsCronField> clear(int... indices) {
-		return new Condition<BitsCronField>(String.format("clear bits %s", Arrays.toString(indices))) {
+		return new Condition<>(String.format("clear bits %s", Arrays.toString(indices))) {
 			@Override
 			public boolean matches(BitsCronField value) {
 				for (int index : indices) {
@@ -150,7 +150,7 @@ class BitsCronFieldTests {
 	}
 
 	private static Condition<BitsCronField> clearRange(int min, int max) {
-		return new Condition<BitsCronField>(String.format("clear range %d-%d", min, max)) {
+		return new Condition<>(String.format("clear range %d-%d", min, max)) {
 			@Override
 			public boolean matches(BitsCronField value) {
 				for (int i = min; i < max; i++) {

spring-context/src/test/java/org/springframework/scheduling/support/CronExpressionTests.java

@@ -43,7 +43,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 class CronExpressionTests {
 
-	private static final Condition<Temporal> weekday = new Condition<Temporal>("weekday") {
+	private static final Condition<Temporal> weekday = new Condition<>("weekday") {
 
 		@Override
 		public boolean matches(Temporal value) {

spring-core/src/main/java/org/springframework/core/convert/support/GenericConversionService.java

@@ -85,8 +85,8 @@ public class GenericConversionService implements ConfigurableConversionService {
 	@Override
 	public void addConverter(Converter<?, ?> converter) {
 		ResolvableType[] typeInfo = getRequiredTypeInfo(converter.getClass(), Converter.class);
-		if (typeInfo == null && converter instanceof DecoratingProxy) {
-			typeInfo = getRequiredTypeInfo(((DecoratingProxy) converter).getDecoratedClass(), Converter.class);
+		if (typeInfo == null && converter instanceof DecoratingProxy decoratingProxy) {
+			typeInfo = getRequiredTypeInfo(decoratingProxy.getDecoratedClass(), Converter.class);
 		}
 		if (typeInfo == null) {
 			throw new IllegalArgumentException("Unable to determine source type <S> and target type <T> for your " +

spring-core/src/main/java/org/springframework/core/type/classreading/SimpleAnnotationMetadataReadingVisitor.java

@@ -85,8 +85,8 @@ final class SimpleAnnotationMetadataReadingVisitor extends ClassVisitor {
 		if (supername != null && !isInterface(access)) {
 			this.superClassName = toClassName(supername);
 		}
-		for (int i = 0; i < interfaces.length; i++) {
-			this.interfaceNames.add(toClassName(interfaces[i]));
+		for (String element : interfaces) {
+			this.interfaceNames.add(toClassName(element));
 		}
 	}
 

spring-core/src/test/java/org/springframework/core/ParameterizedTypeReferenceTests.java

@@ -34,21 +34,21 @@ class ParameterizedTypeReferenceTests {
 
 	@Test
 	void stringTypeReference() {
-		ParameterizedTypeReference<String> typeReference = new ParameterizedTypeReference<String>() {};
+		ParameterizedTypeReference<String> typeReference = new ParameterizedTypeReference<>() {};
 		assertThat(typeReference.getType()).isEqualTo(String.class);
 	}
 
 	@Test
 	void mapTypeReference() throws Exception {
 		Type mapType = getClass().getMethod("mapMethod").getGenericReturnType();
-		ParameterizedTypeReference<Map<Object,String>> typeReference = new ParameterizedTypeReference<Map<Object,String>>() {};
+		ParameterizedTypeReference<Map<Object,String>> typeReference = new ParameterizedTypeReference<>() {};
 		assertThat(typeReference.getType()).isEqualTo(mapType);
 	}
 
 	@Test
 	void listTypeReference() throws Exception {
 		Type listType = getClass().getMethod("listMethod").getGenericReturnType();
-		ParameterizedTypeReference<List<String>> typeReference = new ParameterizedTypeReference<List<String>>() {};
+		ParameterizedTypeReference<List<String>> typeReference = new ParameterizedTypeReference<>() {};
 		assertThat(typeReference.getType()).isEqualTo(listType);
 	}
 

spring-core/src/test/java/org/springframework/core/convert/converter/DefaultConversionServiceTests.java

@@ -1096,10 +1096,9 @@ class DefaultConversionServiceTests {
 
 		@Override
 		public boolean equals(Object o) {
-			if (!(o instanceof SSN)) {
+			if (!(o instanceof SSN ssn)) {
 				return false;
 			}
-			SSN ssn = (SSN) o;
 			return this.value.equals(ssn.value);
 		}
 
@@ -1137,10 +1136,9 @@ class DefaultConversionServiceTests {
 
 		@Override
 		public boolean equals(Object o) {
-			if (!(o instanceof ISBN)) {
+			if (!(o instanceof ISBN isbn)) {
 				return false;
 			}
-			ISBN isbn = (ISBN) o;
 			return this.value.equals(isbn.value);
 		}
 

spring-core/src/test/java/org/springframework/core/env/CustomEnvironmentTests.java

@@ -75,7 +75,7 @@ class CustomEnvironmentTests {
 			@Override
 			@SuppressWarnings("serial")
 			protected Set<String> getReservedDefaultProfiles() {
-				return new HashSet<String>() {{
+				return new HashSet<>() {{
 						add("rd1");
 						add("rd2");
 				}};

spring-core/src/test/java/org/springframework/core/env/PropertySourceTests.java

@@ -37,10 +37,10 @@ class PropertySourceTests {
 	@Test
 	@SuppressWarnings("serial")
 	void equals() {
-		Map<String, Object> map1 = new HashMap<String, Object>() {{
+		Map<String, Object> map1 = new HashMap<>() {{
 			put("a", "b");
 		}};
-		Map<String, Object> map2 = new HashMap<String, Object>() {{
+		Map<String, Object> map2 = new HashMap<>() {{
 			put("c", "d");
 		}};
 		Properties props1 = new Properties() {{
@@ -69,10 +69,10 @@ class PropertySourceTests {
 	@Test
 	@SuppressWarnings("serial")
 	void collectionsOperations() {
-		Map<String, Object> map1 = new HashMap<String, Object>() {{
+		Map<String, Object> map1 = new HashMap<>() {{
 			put("a", "b");
 		}};
-		Map<String, Object> map2 = new HashMap<String, Object>() {{
+		Map<String, Object> map2 = new HashMap<>() {{
 			put("c", "d");
 		}};
 

spring-core/src/test/java/org/springframework/util/concurrent/FutureAdapterTests.java

@@ -41,7 +41,7 @@ class FutureAdapterTests {
 	@SuppressWarnings("unchecked")
 	void setUp() {
 		adaptee = mock(Future.class);
-		adapter = new FutureAdapter<String, Integer>(adaptee) {
+		adapter = new FutureAdapter<>(adaptee) {
 			@Override
 			protected String adapt(Integer adapteeResult) throws ExecutionException {
 				return adapteeResult.toString();

spring-core/src/testFixtures/java/org/springframework/core/testfixture/security/TestPrincipal.java

@@ -41,10 +41,9 @@ public class TestPrincipal implements Principal {
 		if (obj == this) {
 			return true;
 		}
-		if (!(obj instanceof TestPrincipal)) {
+		if (!(obj instanceof TestPrincipal p)) {
 			return false;
 		}
-		TestPrincipal p = (TestPrincipal) obj;
 		return this.name.equals(p.name);
 	}
 

spring-jdbc/src/test/java/org/springframework/jdbc/core/support/LobSupportTests.java

@@ -111,7 +111,7 @@ public class LobSupportTests {
 	}
 
 	private AbstractLobStreamingResultSetExtractor<Void> getResultSetExtractor(final boolean ex) {
-		AbstractLobStreamingResultSetExtractor<Void> lobRse = new AbstractLobStreamingResultSetExtractor<Void>() {
+		AbstractLobStreamingResultSetExtractor<Void> lobRse = new AbstractLobStreamingResultSetExtractor<>() {
 
 			@Override
 			protected void streamData(ResultSet rs) throws SQLException, IOException {

spring-jdbc/src/test/java/org/springframework/jdbc/object/SqlQueryTests.java

@@ -107,7 +107,7 @@ public class SqlQueryTests  {
 		given(resultSet.next()).willReturn(true, false);
 		given(resultSet.getInt(1)).willReturn(1);
 
-		SqlQuery<Integer> query = new MappingSqlQueryWithParameters<Integer>() {
+		SqlQuery<Integer> query = new MappingSqlQueryWithParameters<>() {
 			@Override
 			protected Integer mapRow(ResultSet rs, int rownum, @Nullable Object[] params, @Nullable Map<? ,?> context)
 					throws SQLException {
@@ -129,7 +129,7 @@ public class SqlQueryTests  {
 
 	@Test
 	public void testQueryWithoutEnoughParams() {
-		MappingSqlQuery<Integer> query = new MappingSqlQuery<Integer>() {
+		MappingSqlQuery<Integer> query = new MappingSqlQuery<>() {
 			@Override
 			protected Integer mapRow(ResultSet rs, int rownum) throws SQLException {
 				return rs.getInt(1);
@@ -147,7 +147,7 @@ public class SqlQueryTests  {
 
 	@Test
 	public void testQueryWithMissingMapParams() {
-		MappingSqlQuery<Integer> query = new MappingSqlQuery<Integer>() {
+		MappingSqlQuery<Integer> query = new MappingSqlQuery<>() {
 			@Override
 			protected Integer mapRow(ResultSet rs, int rownum) throws SQLException {
 				return rs.getInt(1);

spring-jdbc/src/test/java/org/springframework/jdbc/support/KeyHolderTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2022 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.
@@ -16,7 +16,6 @@
 
 package org.springframework.jdbc.support;
 
-import java.util.HashMap;
 import java.util.Map;
 
 import org.junit.jupiter.api.Test;
@@ -69,12 +68,7 @@ class KeyHolderTests {
 
 	@Test
 	void getKeyWithMultipleKeysInMap() {
-		@SuppressWarnings("serial")
-		Map<String, Object> m = new HashMap<String, Object>() {{
-			put("key", 1);
-			put("seq", 2);
-		}};
-		kh.getKeyList().add(m);
+		kh.getKeyList().add(Map.of("key", 1, "seq", 2));
 
 		assertThat(kh.getKeys()).as("two keys should be in the map").hasSize(2);
 		assertThatExceptionOfType(InvalidDataAccessApiUsageException.class)
@@ -110,10 +104,7 @@ class KeyHolderTests {
 	@Test
 	void getKeysWithMultipleKeyRows() {
 		@SuppressWarnings("serial")
-		Map<String, Object> m = new HashMap<String, Object>() {{
-			put("key", 1);
-			put("seq", 2);
-		}};
+		Map<String, Object> m = Map.of("key", 1, "seq", 2);
 		kh.getKeyList().addAll(asList(m, m));
 
 		assertThat(kh.getKeyList()).as("two rows should be in the list").hasSize(2);

spring-messaging/src/test/java/org/springframework/messaging/simp/user/TestSimpSubscription.java

@@ -61,10 +61,9 @@ public class TestSimpSubscription implements SimpSubscription {
 		if (this == other) {
 			return true;
 		}
-		if (!(other instanceof SimpSubscription)) {
+		if (!(other instanceof SimpSubscription otherSubscription)) {
 			return false;
 		}
-		SimpSubscription otherSubscription = (SimpSubscription) other;
 		return (ObjectUtils.nullSafeEquals(getSession(), otherSubscription.getSession()) &&
 				this.id.equals(otherSubscription.getId()));
 	}

spring-web/src/test/java/org/springframework/http/client/AbstractHttpRequestFactoryTests.java

@@ -89,8 +89,7 @@ abstract class AbstractHttpRequestFactoryTests extends AbstractMockWebServerTest
 		final byte[] body = "Hello World".getBytes(StandardCharsets.UTF_8);
 		request.getHeaders().setContentLength(body.length);
 
-		if (request instanceof StreamingHttpOutputMessage) {
-			StreamingHttpOutputMessage streamingRequest = (StreamingHttpOutputMessage) request;
+		if (request instanceof StreamingHttpOutputMessage streamingRequest) {
 			streamingRequest.setBody(outputStream -> StreamUtils.copy(body, outputStream));
 		}
 		else {
@@ -111,8 +110,7 @@ abstract class AbstractHttpRequestFactoryTests extends AbstractMockWebServerTest
 		ClientHttpRequest request = factory.createRequest(new URI(baseUrl + "/echo"), HttpMethod.POST);
 
 		final byte[] body = "Hello World".getBytes(StandardCharsets.UTF_8);
-		if (request instanceof StreamingHttpOutputMessage) {
-			StreamingHttpOutputMessage streamingRequest = (StreamingHttpOutputMessage) request;
+		if (request instanceof StreamingHttpOutputMessage streamingRequest) {
 			streamingRequest.setBody(outputStream -> {
 				StreamUtils.copy(body, outputStream);
 				outputStream.flush();

spring-web/src/test/java/org/springframework/http/codec/xml/Jaxb2XmlDecoderTests.java

@@ -289,8 +289,7 @@ public class Jaxb2XmlDecoderTests extends AbstractLeakCheckingTests {
 			if (this == o) {
 				return true;
 			}
-			if (o instanceof TypePojo) {
-				TypePojo other = (TypePojo) o;
+			if (o instanceof TypePojo other) {
 				return this.foo.equals(other.foo) && this.bar.equals(other.bar);
 			}
 			return false;

spring-web/src/test/java/org/springframework/http/converter/json/GsonHttpMessageConverterTests.java

@@ -207,7 +207,7 @@ public class GsonHttpMessageConverterTests {
 	@Test
 	@SuppressWarnings("unchecked")
 	public void readAndWriteParameterizedType() throws Exception {
-		ParameterizedTypeReference<List<MyBean>> beansList = new ParameterizedTypeReference<List<MyBean>>() {
+		ParameterizedTypeReference<List<MyBean>> beansList = new ParameterizedTypeReference<>() {
 		};
 
 		String body = "[{\"bytes\":[1,2],\"array\":[\"Foo\",\"Bar\"]," +
@@ -234,8 +234,8 @@ public class GsonHttpMessageConverterTests {
 	@Test
 	@SuppressWarnings("unchecked")
 	public void writeParameterizedBaseType() throws Exception {
-		ParameterizedTypeReference<List<MyBean>> beansList = new ParameterizedTypeReference<List<MyBean>>() {};
-		ParameterizedTypeReference<List<MyBase>> baseList = new ParameterizedTypeReference<List<MyBase>>() {};
+		ParameterizedTypeReference<List<MyBean>> beansList = new ParameterizedTypeReference<>() {};
+		ParameterizedTypeReference<List<MyBase>> baseList = new ParameterizedTypeReference<>() {};
 
 		String body = "[{\"bytes\":[1,2],\"array\":[\"Foo\",\"Bar\"]," +
 				"\"number\":42,\"string\":\"Foo\",\"bool\":true,\"fraction\":42.0}]";

spring-web/src/test/java/org/springframework/http/converter/json/JsonbHttpMessageConverterTests.java

@@ -207,7 +207,7 @@ public class JsonbHttpMessageConverterTests {
 	@Test
 	@SuppressWarnings("unchecked")
 	public void readAndWriteParameterizedType() throws Exception {
-		ParameterizedTypeReference<List<MyBean>> beansList = new ParameterizedTypeReference<List<MyBean>>() {};
+		ParameterizedTypeReference<List<MyBean>> beansList = new ParameterizedTypeReference<>() {};
 
 		String body = "[{\"bytes\":[1,2],\"array\":[\"Foo\",\"Bar\"]," +
 				"\"number\":42,\"string\":\"Foo\",\"bool\":true,\"fraction\":42.0}]";
@@ -233,8 +233,8 @@ public class JsonbHttpMessageConverterTests {
 	@Test
 	@SuppressWarnings("unchecked")
 	public void writeParameterizedBaseType() throws Exception {
-		ParameterizedTypeReference<List<MyBean>> beansList = new ParameterizedTypeReference<List<MyBean>>() {};
-		ParameterizedTypeReference<List<MyBase>> baseList = new ParameterizedTypeReference<List<MyBase>>() {};
+		ParameterizedTypeReference<List<MyBean>> beansList = new ParameterizedTypeReference<>() {};
+		ParameterizedTypeReference<List<MyBase>> baseList = new ParameterizedTypeReference<>() {};
 
 		String body = "[{\"bytes\":[1,2],\"array\":[\"Foo\",\"Bar\"]," +
 				"\"number\":42,\"string\":\"Foo\",\"bool\":true,\"fraction\":42.0}]";

spring-web/src/test/java/org/springframework/http/converter/json/MappingJackson2HttpMessageConverterTests.java

@@ -281,7 +281,7 @@ public class MappingJackson2HttpMessageConverterTests {
 	@Test
 	@SuppressWarnings("unchecked")
 	public void readAndWriteParameterizedType() throws Exception {
-		ParameterizedTypeReference<List<MyBean>> beansList = new ParameterizedTypeReference<List<MyBean>>() {};
+		ParameterizedTypeReference<List<MyBean>> beansList = new ParameterizedTypeReference<>() {};
 
 		String body = "[{" +
 				"\"bytes\":\"AQI=\"," +
@@ -312,8 +312,8 @@ public class MappingJackson2HttpMessageConverterTests {
 	@Test
 	@SuppressWarnings("unchecked")
 	public void writeParameterizedBaseType() throws Exception {
-		ParameterizedTypeReference<List<MyBean>> beansList = new ParameterizedTypeReference<List<MyBean>>() {};
-		ParameterizedTypeReference<List<MyBase>> baseList = new ParameterizedTypeReference<List<MyBase>>() {};
+		ParameterizedTypeReference<List<MyBean>> beansList = new ParameterizedTypeReference<>() {};
+		ParameterizedTypeReference<List<MyBase>> baseList = new ParameterizedTypeReference<>() {};
 
 		String body = "[{" +
 				"\"bytes\":\"AQI=\"," +
@@ -468,7 +468,7 @@ public class MappingJackson2HttpMessageConverterTests {
 		bar.setNumber(123);
 		beans.add(bar);
 		ParameterizedTypeReference<List<MyInterface>> typeReference =
-				new ParameterizedTypeReference<List<MyInterface>>() {};
+				new ParameterizedTypeReference<>() {};
 
 		this.converter.writeInternal(beans, typeReference.getType(), outputMessage);
 

spring-web/src/test/java/org/springframework/http/converter/xml/Jaxb2CollectionHttpMessageConverterTests.java

@@ -224,8 +224,7 @@ public class Jaxb2CollectionHttpMessageConverterTests {
 			if (this == o) {
 				return true;
 			}
-			if (o instanceof RootElement) {
-				RootElement other = (RootElement) o;
+			if (o instanceof RootElement other) {
 				return this.type.equals(other.type);
 			}
 			return false;
@@ -256,8 +255,7 @@ public class Jaxb2CollectionHttpMessageConverterTests {
 			if (this == o) {
 				return true;
 			}
-			if (o instanceof TestType) {
-				TestType other = (TestType) o;
+			if (o instanceof TestType other) {
 				return this.s.equals(other.s);
 			}
 			return false;

spring-web/src/test/java/org/springframework/http/server/reactive/ChannelSendOperatorTests.java

@@ -140,7 +140,7 @@ public class ChannelSendOperatorTests {
 					return Mono.never();
 				});
 
-		BaseSubscriber<Void> subscriber = new BaseSubscriber<Void>() {};
+		BaseSubscriber<Void> subscriber = new BaseSubscriber<>() {};
 		operator.subscribe(subscriber);
 		subscriber.cancel();
 

spring-web/src/test/java/org/springframework/web/client/HttpMessageConverterExtractorTests.java

@@ -153,7 +153,7 @@ class HttpMessageConverterExtractorTests {
 	void generics() throws IOException {
 		responseHeaders.setContentType(contentType);
 		String expected = "Foo";
-		ParameterizedTypeReference<List<String>> reference = new ParameterizedTypeReference<List<String>>() {};
+		ParameterizedTypeReference<List<String>> reference = new ParameterizedTypeReference<>() {};
 		Type type = reference.getType();
 
 		GenericHttpMessageConverter<String> converter = mock(GenericHttpMessageConverter.class);

spring-web/src/test/java/org/springframework/web/client/RestTemplateIntegrationTests.java

@@ -115,8 +115,7 @@ class RestTemplateIntegrationTests extends AbstractMockWebServerTests {
 	 */
 	@RegisterExtension
 	TestExecutionExceptionHandler serverErrorToAssertionErrorConverter = (context, throwable) -> {
-		if (throwable instanceof HttpServerErrorException) {
-			HttpServerErrorException ex = (HttpServerErrorException) throwable;
+		if (throwable instanceof HttpServerErrorException ex) {
 			String responseBody = ex.getResponseBodyAsString();
 			String prefix = AssertionError.class.getName() + ": ";
 			if (responseBody.startsWith(prefix)) {

spring-web/src/test/java/org/springframework/web/client/RestTemplateTests.java

@@ -646,7 +646,7 @@ class RestTemplateTests {
 	void exchangeParameterizedType() throws Exception {
 		GenericHttpMessageConverter converter = mock(GenericHttpMessageConverter.class);
 		template.setMessageConverters(Collections.<HttpMessageConverter<?>>singletonList(converter));
-		ParameterizedTypeReference<List<Integer>> intList = new ParameterizedTypeReference<List<Integer>>() {};
+		ParameterizedTypeReference<List<Integer>> intList = new ParameterizedTypeReference<>() {};
 		given(converter.canRead(intList.getType(), null, null)).willReturn(true);
 		given(converter.getSupportedMediaTypes(any())).willReturn(Collections.singletonList(MediaType.TEXT_PLAIN));
 		given(converter.canWrite(String.class, String.class, null)).willReturn(true);

spring-web/src/testFixtures/java/org/springframework/web/testfixture/http/server/reactive/bootstrap/AbstractHttpHandlerIntegrationTests.java

@@ -52,8 +52,7 @@ public abstract class AbstractHttpHandlerIntegrationTests {
 	 */
 	@RegisterExtension
 	TestExecutionExceptionHandler serverErrorToAssertionErrorConverter = (context, throwable) -> {
-		if (throwable instanceof HttpServerErrorException) {
-			HttpServerErrorException ex = (HttpServerErrorException) throwable;
+		if (throwable instanceof HttpServerErrorException ex) {
 			String responseBody = ex.getResponseBodyAsString();
 			if (StringUtils.hasText(responseBody)) {
 				String prefix = AssertionError.class.getName() + ": ";

spring-web/src/testFixtures/java/org/springframework/web/testfixture/servlet/MockHttpServletRequest.java

@@ -1282,8 +1282,7 @@ public class MockHttpServletRequest implements HttpServletRequest {
 
 	public void setSession(HttpSession session) {
 		this.session = session;
-		if (session instanceof MockHttpSession) {
-			MockHttpSession mockSession = ((MockHttpSession) session);
+		if (session instanceof MockHttpSession mockSession) {
 			mockSession.access();
 		}
 	}

spring-web/src/testFixtures/java/org/springframework/web/testfixture/servlet/MockHttpServletResponse.java

@@ -447,8 +447,7 @@ public class MockHttpServletResponse implements HttpServletResponse {
 		if (cookie.isHttpOnly()) {
 			buf.append("; HttpOnly");
 		}
-		if (cookie instanceof MockCookie) {
-			MockCookie mockCookie = (MockCookie) cookie;
+		if (cookie instanceof MockCookie mockCookie) {
 			if (StringUtils.hasText(mockCookie.getSameSite())) {
 				buf.append("; SameSite=").append(mockCookie.getSameSite());
 			}

spring-web/src/testFixtures/java/org/springframework/web/testfixture/xml/Pojo.java

@@ -57,8 +57,7 @@ public class Pojo {
 		if (this == o) {
 			return true;
 		}
-		if (o instanceof Pojo) {
-			Pojo other = (Pojo) o;
+		if (o instanceof Pojo other) {
 			return this.foo.equals(other.foo) && this.bar.equals(other.bar);
 		}
 		return false;

spring-webflux/src/test/java/org/springframework/web/reactive/function/client/DefaultClientRequestBuilderTests.java

@@ -202,7 +202,7 @@ public class DefaultClientRequestBuilderTests {
 	public void bodyParameterizedTypeReference() {
 		String body = "foo";
 		Publisher<String> publisher = Mono.just(body);
-		ParameterizedTypeReference<String> typeReference = new ParameterizedTypeReference<String>() {};
+		ParameterizedTypeReference<String> typeReference = new ParameterizedTypeReference<>() {};
 		ClientRequest result = ClientRequest.create(POST, DEFAULT_URL).body(publisher, typeReference).build();
 
 		List<HttpMessageWriter<?>> messageWriters = new ArrayList<>();

spring-webflux/src/test/java/org/springframework/web/reactive/function/client/support/ClientResponseWrapperTests.java

@@ -111,7 +111,7 @@ public class ClientResponseWrapperTests {
 	@Test
 	public void bodyToMonoParameterizedTypeReference() {
 		Mono<String> result = Mono.just("foo");
-		ParameterizedTypeReference<String> reference = new ParameterizedTypeReference<String>() {};
+		ParameterizedTypeReference<String> reference = new ParameterizedTypeReference<>() {};
 		given(mockResponse.bodyToMono(reference)).willReturn(result);
 
 		assertThat(wrapper.bodyToMono(reference)).isSameAs(result);
@@ -128,7 +128,7 @@ public class ClientResponseWrapperTests {
 	@Test
 	public void bodyToFluxParameterizedTypeReference() {
 		Flux<String> result = Flux.just("foo");
-		ParameterizedTypeReference<String> reference = new ParameterizedTypeReference<String>() {};
+		ParameterizedTypeReference<String> reference = new ParameterizedTypeReference<>() {};
 		given(mockResponse.bodyToFlux(reference)).willReturn(result);
 
 		assertThat(wrapper.bodyToFlux(reference)).isSameAs(result);
@@ -145,7 +145,7 @@ public class ClientResponseWrapperTests {
 	@Test
 	public void toEntityParameterizedTypeReference() {
 		Mono<ResponseEntity<String>> result = Mono.just(new ResponseEntity<>("foo", HttpStatus.OK));
-		ParameterizedTypeReference<String> reference = new ParameterizedTypeReference<String>() {};
+		ParameterizedTypeReference<String> reference = new ParameterizedTypeReference<>() {};
 		given(mockResponse.toEntity(reference)).willReturn(result);
 
 		assertThat(wrapper.toEntity(reference)).isSameAs(result);
@@ -162,7 +162,7 @@ public class ClientResponseWrapperTests {
 	@Test
 	public void toEntityListParameterizedTypeReference() {
 		Mono<ResponseEntity<List<String>>> result = Mono.just(new ResponseEntity<>(singletonList("foo"), HttpStatus.OK));
-		ParameterizedTypeReference<String> reference = new ParameterizedTypeReference<String>() {};
+		ParameterizedTypeReference<String> reference = new ParameterizedTypeReference<>() {};
 		given(mockResponse.toEntityList(reference)).willReturn(result);
 
 		assertThat(wrapper.toEntityList(reference)).isSameAs(result);

spring-webflux/src/test/java/org/springframework/web/reactive/function/server/DefaultEntityResponseBuilderTests.java

@@ -71,7 +71,7 @@ public class DefaultEntityResponseBuilderTests {
 	@Test
 	public void fromPublisher() {
 		Flux<String> body = Flux.just("foo", "bar");
-		ParameterizedTypeReference<String> typeReference = new ParameterizedTypeReference<String>() {};
+		ParameterizedTypeReference<String> typeReference = new ParameterizedTypeReference<>() {};
 		EntityResponse<Flux<String>> response = EntityResponse.fromPublisher(body, typeReference).build().block();
 		assertThat(response.entity()).isSameAs(body);
 	}
@@ -79,7 +79,7 @@ public class DefaultEntityResponseBuilderTests {
 	@Test
 	public void fromProducer() {
 		Single<String> body = Single.just("foo");
-		ParameterizedTypeReference<String> typeReference = new ParameterizedTypeReference<String>() {};
+		ParameterizedTypeReference<String> typeReference = new ParameterizedTypeReference<>() {};
 		EntityResponse<Single<String>> response = EntityResponse.fromProducer(body, typeReference).build().block();
 		assertThat(response.entity()).isSameAs(body);
 	}

spring-webflux/src/test/java/org/springframework/web/reactive/function/server/DefaultServerRequestTests.java

@@ -288,7 +288,7 @@ public class DefaultServerRequestTests {
 				.body(body);
 		DefaultServerRequest request = new DefaultServerRequest(MockServerWebExchange.from(mockRequest), messageReaders);
 
-		ParameterizedTypeReference<String> typeReference = new ParameterizedTypeReference<String>() {};
+		ParameterizedTypeReference<String> typeReference = new ParameterizedTypeReference<>() {};
 		Mono<String> resultMono = request.bodyToMono(typeReference);
 		assertThat(resultMono.block()).isEqualTo("foo");
 	}
@@ -346,7 +346,7 @@ public class DefaultServerRequestTests {
 				.body(body);
 		DefaultServerRequest request = new DefaultServerRequest(MockServerWebExchange.from(mockRequest), messageReaders);
 
-		ParameterizedTypeReference<String> typeReference = new ParameterizedTypeReference<String>() {};
+		ParameterizedTypeReference<String> typeReference = new ParameterizedTypeReference<>() {};
 		Flux<String> resultFlux = request.bodyToFlux(typeReference);
 		assertThat(resultFlux.collectList().block()).isEqualTo(Collections.singletonList("foo"));
 	}

spring-webflux/src/test/java/org/springframework/web/reactive/function/server/DispatcherHandlerIntegrationTests.java

@@ -88,7 +88,7 @@ class DispatcherHandlerIntegrationTests extends AbstractHttpHandlerIntegrationTe
 	void flux(HttpServer httpServer) throws Exception {
 		startServer(httpServer);
 
-		ParameterizedTypeReference<List<Person>> reference = new ParameterizedTypeReference<List<Person>>() {};
+		ParameterizedTypeReference<List<Person>> reference = new ParameterizedTypeReference<>() {};
 		ResponseEntity<List<Person>> result =
 				this.restTemplate
 						.exchange("http://localhost:" + this.port + "/flux", HttpMethod.GET, null, reference);

spring-webflux/src/test/java/org/springframework/web/reactive/function/server/PublisherHandlerFunctionIntegrationTests.java

@@ -69,7 +69,7 @@ class PublisherHandlerFunctionIntegrationTests extends AbstractRouterFunctionInt
 	void flux(HttpServer httpServer) throws Exception {
 		startServer(httpServer);
 
-		ParameterizedTypeReference<List<Person>> reference = new ParameterizedTypeReference<List<Person>>() {};
+		ParameterizedTypeReference<List<Person>> reference = new ParameterizedTypeReference<>() {};
 		ResponseEntity<List<Person>> result =
 				restTemplate.exchange("http://localhost:" + super.port + "/flux", HttpMethod.GET, null, reference);
 

spring-webflux/src/test/java/org/springframework/web/reactive/function/server/support/ServerRequestWrapperTests.java

@@ -159,7 +159,7 @@ public class ServerRequestWrapperTests {
 	@Test
 	public void bodyToMonoParameterizedTypeReference() {
 		Mono<String> result = Mono.just("foo");
-		ParameterizedTypeReference<String> reference = new ParameterizedTypeReference<String>() {};
+		ParameterizedTypeReference<String> reference = new ParameterizedTypeReference<>() {};
 		given(mockRequest.bodyToMono(reference)).willReturn(result);
 
 		assertThat(wrapper.bodyToMono(reference)).isSameAs(result);
@@ -176,7 +176,7 @@ public class ServerRequestWrapperTests {
 	@Test
 	public void bodyToFluxParameterizedTypeReference() {
 		Flux<String> result = Flux.just("foo");
-		ParameterizedTypeReference<String> reference = new ParameterizedTypeReference<String>() {};
+		ParameterizedTypeReference<String> reference = new ParameterizedTypeReference<>() {};
 		given(mockRequest.bodyToFlux(reference)).willReturn(result);
 
 		assertThat(wrapper.bodyToFlux(reference)).isSameAs(result);

spring-webflux/src/test/java/org/springframework/web/reactive/result/method/annotation/MessageReaderArgumentResolverTests.java

@@ -353,8 +353,7 @@ public class MessageReaderArgumentResolverTests {
 			if (this == o) {
 				return true;
 			}
-			if (o instanceof TestBean) {
-				TestBean other = (TestBean) o;
+			if (o instanceof TestBean other) {
 				return this.foo.equals(other.foo) && this.bar.equals(other.bar);
 			}
 			return false;

spring-webflux/src/test/java/org/springframework/web/reactive/result/method/annotation/RequestMappingMessageConversionIntegrationTests.java

@@ -71,7 +71,7 @@ import static org.springframework.http.MediaType.APPLICATION_XML;
 public class RequestMappingMessageConversionIntegrationTests extends AbstractRequestMappingIntegrationTests {
 
 	private static final ParameterizedTypeReference<List<Person>> PERSON_LIST =
-			new ParameterizedTypeReference<List<Person>>() {};
+			new ParameterizedTypeReference<>() {};
 
 	private static final MediaType JSON = MediaType.APPLICATION_JSON;
 

spring-webmvc/src/test/java/org/springframework/web/context/ContextLoaderTests.java

@@ -347,7 +347,7 @@ class ContextLoaderTests {
 		@Override
 		public void initialize(ConfigurableApplicationContext applicationContext) {
 			ConfigurableEnvironment environment = applicationContext.getEnvironment();
-			environment.getPropertySources().addFirst(new PropertySource<Object>("testPropertySource") {
+			environment.getPropertySources().addFirst(new PropertySource<>("testPropertySource") {
 				@Override
 				public Object getProperty(String key) {
 					return "name".equals(key) ? "testName" : null;

spring-webmvc/src/test/java/org/springframework/web/context/XmlWebApplicationContextTests.java

@@ -56,8 +56,8 @@ public class XmlWebApplicationContextTests extends AbstractApplicationContextTes
 		root.addBeanFactoryPostProcessor(beanFactory -> beanFactory.addBeanPostProcessor(new BeanPostProcessor() {
 			@Override
 			public Object postProcessBeforeInitialization(Object bean, String name) throws BeansException {
-				if (bean instanceof TestBean) {
-					((TestBean) bean).getFriends().add("myFriend");
+				if (bean instanceof TestBean testBean) {
+					testBean.getFriends().add("myFriend");
 				}
 				return bean;
 			}

spring-webmvc/src/test/java/org/springframework/web/servlet/config/annotation/InterceptorRegistryTests.java

@@ -182,8 +182,7 @@ public class InterceptorRegistryTests {
 		PathMatcher pathMatcher = new AntPathMatcher();
 		List<HandlerInterceptor> result = new ArrayList<>();
 		for (Object interceptor : this.registry.getInterceptors()) {
-			if (interceptor instanceof MappedInterceptor) {
-				MappedInterceptor mappedInterceptor = (MappedInterceptor) interceptor;
+			if (interceptor instanceof MappedInterceptor mappedInterceptor) {
 				if (mappedInterceptor.matches(lookupPath, pathMatcher)) {
 					result.add(mappedInterceptor.getInterceptor());
 				}

spring-webmvc/src/test/java/org/springframework/web/servlet/i18n/LocaleResolverTests.java

@@ -83,8 +83,7 @@ public class LocaleResolverTests {
 		}
 
 		// check LocaleContext
-		if (localeResolver instanceof LocaleContextResolver) {
-			LocaleContextResolver localeContextResolver = (LocaleContextResolver) localeResolver;
+		if (localeResolver instanceof LocaleContextResolver localeContextResolver) {
 			LocaleContext localeContext = localeContextResolver.resolveLocaleContext(request);
 			if (shouldSet) {
 				assertThat(localeContext.getLocale()).isEqualTo(Locale.GERMANY);

spring-webmvc/src/test/java/org/springframework/web/servlet/tags/form/ItemPet.java

@@ -46,10 +46,9 @@ public class ItemPet {
 		if (this == other) {
 			return true;
 		}
-		if (!(other instanceof ItemPet)) {
+		if (!(other instanceof ItemPet otherPet)) {
 			return false;
 		}
-		ItemPet otherPet = (ItemPet) other;
 		return (this.name != null && this.name.equals(otherPet.getName()));
 	}
 

spring-webmvc/src/test/java/org/springframework/web/servlet/tags/form/OptionTagTests.java

@@ -556,8 +556,7 @@ class OptionTagTests extends AbstractHtmlElementTagTests {
 
 		@Override
 		public boolean equals(Object obj) {
-			if (obj instanceof RulesVariant) {
-				RulesVariant other = (RulesVariant) obj;
+			if (obj instanceof RulesVariant other) {
 				return this.toId().equals(other.toId());
 			}
 			return false;

spring-websocket/src/test/java/org/springframework/web/socket/UndertowTestServer.java

@@ -144,7 +144,7 @@ public class UndertowTestServer implements WebSocketTestServer {
 
 		@Override
 		public InstanceHandle<Servlet> createInstance() throws InstantiationException {
-			return new InstanceHandle<Servlet>() {
+			return new InstanceHandle<>() {
 				@Override
 				public Servlet getInstance() {
 					return new DispatcherServlet(wac);
@@ -167,7 +167,7 @@ public class UndertowTestServer implements WebSocketTestServer {
 
 		@Override
 		public InstanceHandle<Filter> createInstance() throws InstantiationException {
-			return new InstanceHandle<Filter>() {
+			return new InstanceHandle<>() {
 				@Override
 				public Filter getInstance() {
 					return filter;