Polish

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

@@ -69,7 +69,8 @@ public abstract class OnEndpointElementCondition extends SpringBootCondition {
 	}
 
 	protected ConditionOutcome getDefaultEndpointsOutcome(ConditionContext context) {
-		boolean match = Boolean.valueOf(context.getEnvironment().getProperty(this.prefix + "defaults.enabled", "true"));
+		boolean match = Boolean
+				.parseBoolean(context.getEnvironment().getProperty(this.prefix + "defaults.enabled", "true"));
 		return new ConditionOutcome(match, ConditionMessage.forCondition(this.annotationType)
 				.because(this.prefix + "defaults.enabled is considered " + match));
 	}

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/context/properties/ConfigurationPropertiesReportEndpoint.java

@@ -186,7 +186,7 @@ public class ConfigurationPropertiesReportEndpoint implements ApplicationContext
 	 * @param prefix the prefix
 	 * @return the serialized instance
 	 */
-	@SuppressWarnings("unchecked")
+	@SuppressWarnings({ "unchecked", "rawtypes" })
 	private Map<String, Object> safeSerialize(ObjectMapper mapper, Object bean, String prefix) {
 		try {
 			return new HashMap<>(mapper.convertValue(bean, Map.class));

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/web/PathMappedEndpoints.java

@@ -65,13 +65,11 @@ public class PathMappedEndpoints implements Iterable<PathMappedEndpoint> {
 
 	private Map<EndpointId, PathMappedEndpoint> getEndpoints(Collection<EndpointsSupplier<?>> suppliers) {
 		Map<EndpointId, PathMappedEndpoint> endpoints = new LinkedHashMap<>();
-		suppliers.forEach((supplier) -> {
-			supplier.getEndpoints().forEach((endpoint) -> {
-				if (endpoint instanceof PathMappedEndpoint) {
-					endpoints.put(endpoint.getEndpointId(), (PathMappedEndpoint) endpoint);
-				}
-			});
-		});
+		suppliers.forEach((supplier) -> supplier.getEndpoints().forEach((endpoint) -> {
+			if (endpoint instanceof PathMappedEndpoint) {
+				endpoints.put(endpoint.getEndpointId(), (PathMappedEndpoint) endpoint);
+			}
+		}));
 		return Collections.unmodifiableMap(endpoints);
 	}
 

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

@@ -99,7 +99,7 @@ public class HealthWebEndpointResponseMapper {
 	}
 
 	private WebEndpointResponse<Health> createWebEndpointResponse(Health health) {
-		Integer status = this.statusHttpMapper.mapStatus(health.getStatus());
+		int status = this.statusHttpMapper.mapStatus(health.getStatus());
 		return new WebEndpointResponse<>(health, status);
 	}
 

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/amqp/RabbitProperties.java

@@ -1059,7 +1059,7 @@ public class RabbitProperties {
 			}
 			else {
 				this.host = input.substring(0, portIndex);
-				this.port = Integer.valueOf(input.substring(portIndex + 1));
+				this.port = Integer.parseInt(input.substring(portIndex + 1));
 			}
 		}
 

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/redis/RedisConnectionConfiguration.java

@@ -120,7 +120,7 @@ abstract class RedisConnectionConfiguration {
 			try {
 				String[] parts = StringUtils.split(node, ":");
 				Assert.state(parts.length == 2, "Must be defined as 'host:port'");
-				nodes.add(new RedisNode(parts[0], Integer.valueOf(parts[1])));
+				nodes.add(new RedisNode(parts[0], Integer.parseInt(parts[1])));
 			}
 			catch (RuntimeException ex) {
 				throw new IllegalStateException("Invalid redis sentinel property '" + node + "'", ex);

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/http/HttpMessageConverters.java

@@ -44,8 +44,8 @@ import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupp
  * needed, otherwise default converters will be used.
  * <p>
  * NOTE: The default converters used are the same as standard Spring MVC (see
- * {@link WebMvcConfigurationSupport#getMessageConverters} with some slight re-ordering to
- * put XML converters at the back of the list.
+ * {@link WebMvcConfigurationSupport}) with some slight re-ordering to put XML converters
+ * at the back of the list.
  *
  * @author Dave Syer
  * @author Phillip Webb

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jms/artemis/ArtemisConnectionFactoryFactory.java

@@ -68,10 +68,10 @@ class ArtemisConnectionFactoryFactory {
 	}
 
 	private void startEmbeddedJms() {
-		for (int i = 0; i < EMBEDDED_JMS_CLASSES.length; i++) {
-			if (ClassUtils.isPresent(EMBEDDED_JMS_CLASSES[i], null)) {
+		for (String embeddedJmsClass : EMBEDDED_JMS_CLASSES) {
+			if (ClassUtils.isPresent(embeddedJmsClass, null)) {
 				try {
-					this.beanFactory.getBeansOfType(Class.forName(EMBEDDED_JMS_CLASSES[i]));
+					this.beanFactory.getBeansOfType(Class.forName(embeddedJmsClass));
 				}
 				catch (Exception ex) {
 					// Ignore
@@ -103,8 +103,8 @@ class ArtemisConnectionFactoryFactory {
 	}
 
 	private boolean isEmbeddedJmsClassPresent() {
-		for (int i = 0; i < EMBEDDED_JMS_CLASSES.length; i++) {
-			if (ClassUtils.isPresent(EMBEDDED_JMS_CLASSES[i], null)) {
+		for (String embeddedJmsClass : EMBEDDED_JMS_CLASSES) {
+			if (ClassUtils.isPresent(embeddedJmsClass, null)) {
 				return true;
 			}
 		}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/ldap/LdapProperties.java

@@ -120,7 +120,7 @@ public class LdapProperties {
 		Assert.notNull(environment, "Environment must not be null");
 		String localPort = environment.getProperty("local.ldap.port");
 		if (localPort != null) {
-			return Integer.valueOf(localPort);
+			return Integer.parseInt(localPort);
 		}
 		return DEFAULT_PORT;
 	}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/embedded/TomcatWebServerFactoryCustomizer.java

@@ -282,17 +282,15 @@ public class TomcatWebServerFactoryCustomizer
 
 	private void customizeStaticResources(ConfigurableTomcatWebServerFactory factory) {
 		ServerProperties.Tomcat.Resource resource = this.serverProperties.getTomcat().getResource();
-		factory.addContextCustomizers((context) -> {
-			context.addLifecycleListener((event) -> {
-				if (event.getType().equals(Lifecycle.CONFIGURE_START_EVENT)) {
-					context.getResources().setCachingAllowed(resource.isAllowCaching());
-					if (resource.getCacheTtl() != null) {
-						long ttl = resource.getCacheTtl().toMillis();
-						context.getResources().setCacheTtl(ttl);
-					}
+		factory.addContextCustomizers((context) -> context.addLifecycleListener((event) -> {
+			if (event.getType().equals(Lifecycle.CONFIGURE_START_EVENT)) {
+				context.getResources().setCachingAllowed(resource.isAllowCaching());
+				if (resource.getCacheTtl() != null) {
+					long ttl = resource.getCacheTtl().toMillis();
+					context.getResources().setCacheTtl(ttl);
 				}
-			});
-		});
+			}
+		}));
 	}
 
 	private void customizeErrorReportValve(ErrorProperties error, ConfigurableTomcatWebServerFactory factory) {

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/embedded/UndertowWebServerFactoryCustomizer.java

@@ -168,16 +168,13 @@ public class UndertowWebServerFactoryCustomizer
 			return (value) -> this.factory.addBuilderCustomizers((builder) -> builder.setSocketOption(option, value));
 		}
 
-		@SuppressWarnings("unchecked")
 		<T> Consumer<Map<String, String>> forEach(Function<Option<T>, Consumer<T>> function) {
-			return (map) -> {
-				map.forEach((key, value) -> {
-					Option<T> option = (Option<T>) NAME_LOOKUP.get(getCanonicalName(key));
-					Assert.state(option != null, "Unable to find '" + key + "' in UndertowOptions");
-					T parsed = option.parseValue(value, getClass().getClassLoader());
-					function.apply(option).accept(parsed);
-				});
-			};
+			return (map) -> map.forEach((key, value) -> {
+				Option<T> option = (Option<T>) NAME_LOOKUP.get(getCanonicalName(key));
+				Assert.state(option != null, "Unable to find '" + key + "' in UndertowOptions");
+				T parsed = option.parseValue(value, getClass().getClassLoader());
+				function.apply(option).accept(parsed);
+			});
 		}
 
 		private static String getCanonicalName(String name) {

spring-boot-project/spring-boot-cli/src/main/java/org/springframework/boot/cli/command/archive/ArchiveCommand.java

@@ -18,7 +18,6 @@ package org.springframework.boot.cli.command.archive;
 
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.URI;
@@ -175,7 +174,7 @@ abstract class ArchiveCommand extends OptionParsingCommand {
 		}
 
 		private void writeJar(File file, Class<?>[] compiledClasses, List<MatchedResource> classpathEntries,
-				List<URL> dependencies) throws FileNotFoundException, IOException, URISyntaxException {
+				List<URL> dependencies) throws IOException, URISyntaxException {
 			final List<Library> libraries;
 			try (JarWriter writer = new JarWriter(file)) {
 				addManifest(writer, compiledClasses);

spring-boot-project/spring-boot-cli/src/main/java/org/springframework/boot/cli/command/core/HintCommand.java

@@ -17,6 +17,7 @@
 package org.springframework.boot.cli.command.core;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 
@@ -48,9 +49,7 @@ public class HintCommand extends AbstractCommand {
 		try {
 			int index = (args.length != 0) ? Integer.parseInt(args[0]) - 1 : 0;
 			List<String> arguments = new ArrayList<>(args.length);
-			for (int i = 2; i < args.length; i++) {
-				arguments.add(args[i]);
-			}
+			arguments.addAll(Arrays.asList(args).subList(2, args.length));
 			String starting = "";
 			if (index < arguments.size()) {
 				starting = arguments.remove(index);

spring-boot-project/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/livereload/LiveReloadServer.java

@@ -283,7 +283,7 @@ public class LiveReloadServer {
 			}
 		}
 
-		private void runConnection(Connection connection) throws IOException, Exception {
+		private void runConnection(Connection connection) throws Exception {
 			try {
 				addConnection(connection);
 				connection.run();

spring-boot-project/spring-boot-properties-migrator/src/main/java/org/springframework/boot/context/properties/migrator/PropertiesMigrationReporter.java

@@ -98,16 +98,14 @@ class PropertiesMigrationReporter {
 		MultiValueMap<String, PropertyMigration> result = new LinkedMultiValueMap<>();
 		List<ConfigurationMetadataProperty> candidates = this.allProperties.values().stream().filter(filter)
 				.collect(Collectors.toList());
-		getPropertySourcesAsMap().forEach((name, source) -> {
-			candidates.forEach((metadata) -> {
-				ConfigurationProperty configurationProperty = source
-						.getConfigurationProperty(ConfigurationPropertyName.of(metadata.getId()));
-				if (configurationProperty != null) {
-					result.add(name, new PropertyMigration(configurationProperty, metadata,
-							determineReplacementMetadata(metadata)));
-				}
-			});
-		});
+		getPropertySourcesAsMap().forEach((name, source) -> candidates.forEach((metadata) -> {
+			ConfigurationProperty configurationProperty = source
+					.getConfigurationProperty(ConfigurationPropertyName.of(metadata.getId()));
+			if (configurationProperty != null) {
+				result.add(name,
+						new PropertyMigration(configurationProperty, metadata, determineReplacementMetadata(metadata)));
+			}
+		}));
 		return result;
 	}
 

spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/context/runner/AbstractApplicationContextRunner.java

@@ -351,16 +351,13 @@ public abstract class AbstractApplicationContextRunner<SELF extends AbstractAppl
 	 * @param consumer the consumer of the created {@link ApplicationContext}
 	 * @return this instance
 	 */
-	@SuppressWarnings("unchecked")
 	public SELF run(ContextConsumer<? super A> consumer) {
-		withContextClassLoader(this.classLoader, () -> {
-			this.systemProperties.applyToSystemProperties(() -> {
-				try (A context = createAssertableContext()) {
-					accept(consumer, context);
-				}
-				return null;
-			});
-		});
+		withContextClassLoader(this.classLoader, () -> this.systemProperties.applyToSystemProperties(() -> {
+			try (A context = createAssertableContext()) {
+				accept(consumer, context);
+			}
+			return null;
+		}));
 		return (SELF) this;
 	}
 

spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/mock/mockito/MockitoPostProcessor.java

@@ -20,6 +20,7 @@ import java.beans.PropertyDescriptor;
 import java.lang.reflect.Field;
 import java.util.Arrays;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.LinkedHashSet;
@@ -307,7 +308,7 @@ public class MockitoPostProcessor extends InstantiationAwareBeanPostProcessorAda
 				if (primaryBeanName != null) {
 					throw new NoUniqueBeanDefinitionException(type.resolve(), candidateBeanNames.size(),
 							"more than one 'primary' bean found among candidates: "
-									+ Arrays.asList(candidateBeanNames));
+									+ Collections.singletonList(candidateBeanNames));
 				}
 				primaryBeanName = candidateBeanName;
 			}

spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/main/java/org/springframework/boot/configurationprocessor/ConfigurationMetadataAnnotationProcessor.java

@@ -181,10 +181,10 @@ public class ConfigurationMetadataAnnotationProcessor extends AbstractProcessor
 			if (annotation != null) {
 				String prefix = getPrefix(annotation);
 				if (element instanceof TypeElement) {
-					processAnnotatedTypeElement(prefix, (TypeElement) element, new Stack<TypeElement>());
+					processAnnotatedTypeElement(prefix, (TypeElement) element, new Stack<>());
 				}
 				else if (element instanceof ExecutableElement) {
-					processExecutableElement(prefix, (ExecutableElement) element, new Stack<TypeElement>());
+					processExecutableElement(prefix, (ExecutableElement) element, new Stack<>());
 				}
 			}
 		}

spring-boot-project/spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/ExecutableArchiveLauncher.java

@@ -74,7 +74,7 @@ public abstract class ExecutableArchiveLauncher extends Launcher {
 	}
 
 	private Iterator<Archive> applyClassPathArchivePostProcessing(Iterator<Archive> archives) throws Exception {
-		List<Archive> list = new ArrayList<Archive>();
+		List<Archive> list = new ArrayList<>();
 		while (archives.hasNext()) {
 			list.add(archives.next());
 		}

spring-boot-project/spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/PropertiesLauncher.java

@@ -167,7 +167,7 @@ public class PropertiesLauncher extends Launcher {
 		}
 	}
 
-	private void initializeProperties() throws Exception, IOException {
+	private void initializeProperties() throws Exception {
 		List<String> configs = new ArrayList<>();
 		if (getProperty(CONFIG_LOCATION) != null) {
 			configs.add(getProperty(CONFIG_LOCATION));
@@ -195,7 +195,7 @@ public class PropertiesLauncher extends Launcher {
 		}
 	}
 
-	private void loadResource(InputStream resource) throws IOException, Exception {
+	private void loadResource(InputStream resource) throws Exception {
 		this.properties.load(resource);
 		for (Object key : Collections.list(this.properties.propertyNames())) {
 			String text = this.properties.getProperty((String) key);
@@ -591,7 +591,7 @@ public class PropertiesLauncher extends Launcher {
 	}
 
 	private List<Archive> asList(Iterator<Archive> iterator) {
-		List<Archive> list = new ArrayList<Archive>();
+		List<Archive> list = new ArrayList<>();
 		while (iterator.hasNext()) {
 			list.add(iterator.next());
 		}

spring-boot-project/spring-boot-tools/spring-boot-test-support/src/main/java/org/springframework/boot/testsupport/classpath/ModifiedClassPathClassLoader.java

@@ -172,9 +172,8 @@ final class ModifiedClassPathClassLoader extends URLClassLoader {
 		MergedAnnotations annotations = MergedAnnotations.from(testClass,
 				MergedAnnotations.SearchStrategy.TYPE_HIERARCHY);
 		ClassPathEntryFilter filter = new ClassPathEntryFilter(annotations.get(ClassPathExclusions.class));
-		List<URL> processedUrls = new ArrayList<>();
 		List<URL> additionalUrls = getAdditionalUrls(annotations.get(ClassPathOverrides.class));
-		processedUrls.addAll(additionalUrls);
+		List<URL> processedUrls = new ArrayList<>(additionalUrls);
 		for (URL url : urls) {
 			if (!filter.isExcluded(url)) {
 				processedUrls.add(url);

spring-boot-project/spring-boot-tools/spring-boot-test-support/src/main/java/org/springframework/boot/testsupport/classpath/ModifiedClassPathExtension.java

@@ -81,7 +81,7 @@ class ModifiedClassPathExtension implements InvocationInterceptor {
 	}
 
 	private void runTestWithModifiedClassPath(ReflectiveInvocationContext<Method> invocationContext,
-			ExtensionContext extensionContext) throws ClassNotFoundException, Throwable {
+			ExtensionContext extensionContext) throws Throwable {
 		Class<?> testClass = extensionContext.getRequiredTestClass();
 		Method testMethod = invocationContext.getExecutable();
 		ClassLoader originalClassLoader = Thread.currentThread().getContextClassLoader();
@@ -95,8 +95,7 @@ class ModifiedClassPathExtension implements InvocationInterceptor {
 		}
 	}
 
-	private void runTest(ClassLoader classLoader, String testClassName, String testMethodName)
-			throws ClassNotFoundException, Throwable {
+	private void runTest(ClassLoader classLoader, String testClassName, String testMethodName) throws Throwable {
 		Class<?> testClass = classLoader.loadClass(testClassName);
 		Method testMethod = findMethod(testClass, testMethodName);
 		LauncherDiscoveryRequest request = new LauncherDiscoveryRequestBuilder(classLoader)

spring-boot-project/spring-boot-tools/spring-boot-test-support/src/main/java/org/springframework/boot/testsupport/compiler/TestCompiler.java

@@ -20,6 +20,7 @@ import java.io.File;
 import java.io.IOException;
 import java.util.Arrays;
 import java.util.Collection;
+import java.util.Collections;
 
 import javax.annotation.processing.Processor;
 import javax.tools.JavaCompiler;
@@ -59,7 +60,7 @@ public class TestCompiler {
 		this.fileManager = compiler.getStandardFileManager(null, null, null);
 		this.outputLocation = outputLocation;
 		this.outputLocation.mkdirs();
-		Iterable<? extends File> temp = Arrays.asList(this.outputLocation);
+		Iterable<? extends File> temp = Collections.singletonList(this.outputLocation);
 		this.fileManager.setLocation(StandardLocation.CLASS_OUTPUT, temp);
 		this.fileManager.setLocation(StandardLocation.SOURCE_OUTPUT, temp);
 	}

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/jetty/JettyServletWebServerFactory.java

@@ -521,7 +521,7 @@ public class JettyServletWebServerFactory extends AbstractServletWebServerFactor
 		}
 
 		@Override
-		public Resource addPath(String path) throws IOException, MalformedURLException {
+		public Resource addPath(String path) throws IOException {
 			if (path.startsWith("/org/springframework/boot")) {
 				return null;
 			}