Polish

See gh-30695

buildSrc/src/main/java/org/springframework/boot/build/devtools/DocumentDevtoolsPropertyDefaults.java

@@ -41,7 +41,7 @@ import org.gradle.api.tasks.TaskAction;
  */
 public class DocumentDevtoolsPropertyDefaults extends DefaultTask {
 
-	private Configuration devtools;
+	private final Configuration devtools;
 
 	private final RegularFileProperty outputFile;
 

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/thymeleaf/ThymeleafReactiveAutoConfigurationTests.java

@@ -96,8 +96,7 @@ class ThymeleafReactiveAutoConfigurationTests {
 								MediaType.APPLICATION_ATOM_XML, new MediaType("application", "javascript"),
 								new MediaType("application", "ecmascript"), new MediaType("text", "javascript"),
 								new MediaType("text", "ecmascript"), MediaType.APPLICATION_JSON,
-								new MediaType("text", "css"), MediaType.TEXT_PLAIN, MediaType.TEXT_EVENT_STREAM)
-						.satisfies(System.out::println));
+								new MediaType("text", "css"), MediaType.TEXT_PLAIN, MediaType.TEXT_EVENT_STREAM));
 	}
 
 	@Test

spring-boot-project/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/env/DevToolsPropertyDefaultsPostProcessor.java

@@ -18,6 +18,7 @@ package org.springframework.boot.devtools.env;
 
 import java.io.IOException;
 import java.io.InputStream;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Properties;
@@ -74,7 +75,7 @@ public class DevToolsPropertyDefaultsPostProcessor implements EnvironmentPostPro
 		for (String name : properties.stringPropertyNames()) {
 			map.put(name, properties.getProperty(name));
 		}
-		PROPERTIES = map;
+		PROPERTIES = Collections.unmodifiableMap(map);
 	}
 
 	@Override

spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/features/testing/springbootapplications/autoconfiguredspringdataelasticsearch/MyDataElasticsearchTests.java

@@ -20,7 +20,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.data.elasticsearch.DataElasticsearchTest;
 
 @DataElasticsearchTest
-public class MyDataElasticsearchTests {
+class MyDataElasticsearchTests {
 
 	@Autowired
 	@SuppressWarnings("unused")

spring-boot-project/spring-boot-tools/spring-boot-gradle-test-support/src/main/java/org/springframework/boot/testsupport/gradle/testkit/GradleBuild.java

@@ -184,7 +184,7 @@ public class GradleBuild {
 						buildOutput = buildOutput.replaceAll(message, "");
 					}
 				}
-				assertThat(buildOutput).doesNotContain("Deprecated").doesNotContain("deprecated");
+				assertThat(buildOutput).doesNotContainIgnoringCase("deprecated");
 			}
 			return result;
 		}

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/diagnostics/analyzer/MutuallyExclusiveConfigurationPropertiesFailureAnalyzer.java

@@ -37,7 +37,7 @@ import org.springframework.core.env.Environment;
 import org.springframework.core.env.PropertySource;
 
 /**
- * A {@link FailureAnalyzer} that performs analysis of failures caused by an
+ * A {@link FailureAnalyzer} that performs analysis of failures caused by a
  * {@link MutuallyExclusiveConfigurationPropertiesException}.
  *
  * @author Andy Wilkinson

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/context/MissingWebServerFactoryBeanFailureAnalyzer.java

@@ -24,7 +24,7 @@ import org.springframework.boot.diagnostics.FailureAnalyzer;
 import org.springframework.core.annotation.Order;
 
 /**
- * A {@link FailureAnalyzer} that performs analysis of failures caused by an
+ * A {@link FailureAnalyzer} that performs analysis of failures caused by a
  * {@link MissingWebServerFactoryBeanException}.
  *
  * @author Guirong Hu

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/reactive/context/ReactiveWebServerApplicationContext.java

@@ -107,7 +107,7 @@ public class ReactiveWebServerApplicationContext extends GenericReactiveWebAppli
 		// Use bean names so that we don't consider the hierarchy
 		String[] beanNames = getBeanFactory().getBeanNamesForType(ReactiveWebServerFactory.class);
 		if (beanNames.length == 0) {
-			throw new MissingWebServerFactoryBeanException(this.getClass(), ReactiveWebServerFactory.class,
+			throw new MissingWebServerFactoryBeanException(getClass(), ReactiveWebServerFactory.class,
 					WebApplicationType.REACTIVE);
 		}
 		if (beanNames.length > 1) {

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/servlet/context/ServletWebServerApplicationContext.java

@@ -209,7 +209,7 @@ public class ServletWebServerApplicationContext extends GenericWebApplicationCon
 		// Use bean names so that we don't consider the hierarchy
 		String[] beanNames = getBeanFactory().getBeanNamesForType(ServletWebServerFactory.class);
 		if (beanNames.length == 0) {
-			throw new MissingWebServerFactoryBeanException(this.getClass(), ServletWebServerFactory.class,
+			throw new MissingWebServerFactoryBeanException(getClass(), ServletWebServerFactory.class,
 					WebApplicationType.SERVLET);
 		}
 		if (beanNames.length > 1) {

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/SpringBootVersionTests.java

@@ -31,7 +31,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  *
  * @author Andy Wilkinson
  */
-public class SpringBootVersionTests {
+class SpringBootVersionTests {
 
 	@Test
 	void getVersionShouldReturnVersionMatchingGradleProperties() throws IOException {