Remove redundant explicit types

See gh-18754

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/health/AutoConfiguredHealthEndpointGroups.java

@@ -85,7 +85,7 @@ class AutoConfiguredHealthEndpointGroups implements HealthEndpointGroups {
 	private Map<String, HealthEndpointGroup> createGroups(Map<String, Group> groupProperties, BeanFactory beanFactory,
 			StatusAggregator defaultStatusAggregator, HttpCodeStatusMapper defaultHttpCodeStatusMapper,
 			Show defaultShowComponents, Show defaultShowDetails, Set<String> defaultRoles) {
-		Map<String, HealthEndpointGroup> groups = new LinkedHashMap<String, HealthEndpointGroup>();
+		Map<String, HealthEndpointGroup> groups = new LinkedHashMap<>();
 		groupProperties.forEach((groupName, group) -> {
 			Status status = group.getStatus();
 			Show showComponents = (group.getShowComponents() != null) ? group.getShowComponents()

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/health/HealthAggregatorStatusAggregatorAdapter.java

@@ -43,7 +43,7 @@ class HealthAggregatorStatusAggregatorAdapter implements StatusAggregator {
 	@Override
 	public Status getAggregateStatus(Set<Status> statuses) {
 		int index = 0;
-		Map<String, Health> healths = new LinkedHashMap<String, Health>();
+		Map<String, Health> healths = new LinkedHashMap<>();
 		for (Status status : statuses) {
 			index++;
 			healths.put("health" + index, asHealth(status));

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/health/HealthContributorRegistryHealthIndicatorRegistryAdapter.java

@@ -67,7 +67,7 @@ class HealthContributorRegistryHealthIndicatorRegistryAdapter implements HealthI
 
 	@Override
 	public Map<String, HealthIndicator> getAll() {
-		Map<String, HealthIndicator> all = new LinkedHashMap<String, HealthIndicator>();
+		Map<String, HealthIndicator> all = new LinkedHashMap<>();
 		for (NamedContributor<?> namedContributor : this.contributorRegistry) {
 			if (namedContributor.getContributor() instanceof HealthIndicator) {
 				all.put(namedContributor.getName(), (HealthIndicator) namedContributor.getContributor());

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/health/HealthIndicatorProperties.java

@@ -37,7 +37,7 @@ public class HealthIndicatorProperties {
 
 	private List<String> order = new ArrayList<>();
 
-	private final Map<String, Integer> httpMapping = new LinkedHashMap<String, Integer>();
+	private final Map<String, Integer> httpMapping = new LinkedHashMap<>();
 
 	@DeprecatedConfigurationProperty(replacement = "management.endpoint.health.status.order")
 	public List<String> getOrder() {

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/health/HealthEndpointSupport.java

@@ -80,7 +80,7 @@ abstract class HealthEndpointSupport<C, T> {
 		Object contributor = getContributor(path, pathOffset);
 		T health = getContribution(apiVersion, group, contributor, showComponents, showDetails,
 				isSystemHealth ? this.groups.getNames() : null);
-		return (health != null) ? new HealthResult<T>(health, group) : null;
+		return (health != null) ? new HealthResult<>(health, group) : null;
 	}
 
 	@SuppressWarnings("unchecked")

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/health/SimpleHttpCodeStatusMapper.java

@@ -66,7 +66,7 @@ public class SimpleHttpCodeStatusMapper implements HttpCodeStatusMapper {
 	}
 
 	private static Map<String, Integer> getUniformMappings(Map<String, Integer> mappings) {
-		Map<String, Integer> result = new LinkedHashMap<String, Integer>();
+		Map<String, Integer> result = new LinkedHashMap<>();
 		for (Map.Entry<String, Integer> entry : mappings.entrySet()) {
 			String code = getUniformCode(entry.getKey());
 			if (code != null) {

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/health/SimpleStatusAggregator.java

@@ -38,7 +38,7 @@ public class SimpleStatusAggregator implements StatusAggregator {
 
 	private static final List<String> DEFAULT_ORDER;
 	static {
-		List<String> defaultOrder = new ArrayList<String>();
+		List<String> defaultOrder = new ArrayList<>();
 		defaultOrder.add(Status.DOWN.getCode());
 		defaultOrder.add(Status.OUT_OF_SERVICE.getCode());
 		defaultOrder.add(Status.UP.getCode());

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/health/HealthEndpointWebIntegrationTests.java

@@ -177,8 +177,7 @@ class HealthEndpointWebIntegrationTests {
 		ReactiveHealthContributorRegistry reactiveHealthContributorRegistry(
 				Map<String, HealthContributor> healthContributorBeans,
 				Map<String, ReactiveHealthContributor> reactiveHealthContributorBeans) {
-			Map<String, ReactiveHealthContributor> allIndicators = new LinkedHashMap<String, ReactiveHealthContributor>(
-					reactiveHealthContributorBeans);
+			Map<String, ReactiveHealthContributor> allIndicators = new LinkedHashMap<>(reactiveHealthContributorBeans);
 			healthContributorBeans.forEach((name, contributor) -> allIndicators.computeIfAbsent(name,
 					(key) -> ReactiveHealthContributor.adapt(contributor)));
 			return new DefaultReactiveHealthContributorRegistry(allIndicators);

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/health/NamedContributorsMapAdapterTests.java

@@ -91,7 +91,7 @@ class NamedContributorsMapAdapterTests {
 	}
 
 	private TestNamedContributorsMapAdapter<String> createAdapter() {
-		Map<String, String> map = new LinkedHashMap<String, String>();
+		Map<String, String> map = new LinkedHashMap<>();
 		map.put("one", "one");
 		map.put("two", "two");
 		TestNamedContributorsMapAdapter<String> adapter = new TestNamedContributorsMapAdapter<>(map, this::reverse);

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/servlet/error/BasicErrorController.java

@@ -96,7 +96,7 @@ public class BasicErrorController extends AbstractErrorController {
 	public ResponseEntity<Map<String, Object>> error(HttpServletRequest request) {
 		HttpStatus status = getStatus(request);
 		if (status == HttpStatus.NO_CONTENT) {
-			return new ResponseEntity<Map<String, Object>>(status);
+			return new ResponseEntity<>(status);
 		}
 		Map<String, Object> body = getErrorAttributes(request, isIncludeStackTrace(request, MediaType.ALL));
 		return new ResponseEntity<>(body, status);

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/convert/LenientObjectToEnumConverterFactory.java

@@ -55,7 +55,7 @@ abstract class LenientObjectToEnumConverterFactory<T> implements ConverterFactor
 			enumType = enumType.getSuperclass();
 		}
 		Assert.notNull(enumType, () -> "The target type " + targetType.getName() + " does not refer to an enum");
-		return new LenientToEnumConverter<E>((Class<E>) enumType);
+		return new LenientToEnumConverter<>((Class<E>) enumType);
 	}
 
 	@SuppressWarnings("unchecked")