Polish

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/tracing/zipkin/HttpSender.java

@@ -41,7 +41,7 @@
  */
 abstract class HttpSender extends Sender {
 
-	private static final DataSize MESSAGE_MAX_BYTES = DataSize.ofKilobytes(512);
+	private static final DataSize MESSAGE_MAX_SIZE = DataSize.ofKilobytes(512);
 
 	private volatile boolean closed;
 
@@ -52,7 +52,7 @@ public Encoding encoding() {
 
 	@Override
 	public int messageMaxBytes() {
-		return (int) MESSAGE_MAX_BYTES.toBytes();
+		return (int) MESSAGE_MAX_SIZE.toBytes();
 	}
 
 	@Override

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/tracing/zipkin/ZipkinWebClientSender.java

@@ -69,7 +69,7 @@ protected Void doExecute() {
 
 		@Override
 		protected void doEnqueue(Callback<Void> callback) {
-			sendRequest().subscribe((__) -> callback.onSuccess(null), callback::onError);
+			sendRequest().subscribe((entity) -> callback.onSuccess(null), callback::onError);
 		}
 
 		private Mono<ResponseEntity<Void>> sendRequest() {

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/tracing/zipkin/ZipkinHttpSenderTests.java

@@ -58,11 +58,11 @@ void sendSpansShouldThrowIfCloseWasCalled() throws IOException {
 
 	protected void makeRequest(List<byte[]> encodedSpans, boolean async) throws IOException {
 		if (async) {
-			CallbackResult callbackResult = this.makeAsyncRequest(encodedSpans);
+			CallbackResult callbackResult = makeAsyncRequest(encodedSpans);
 			assertThat(callbackResult.success()).isTrue();
 		}
 		else {
-			this.makeSyncRequest(encodedSpans);
+			makeSyncRequest(encodedSpans);
 		}
 	}
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/tracing/zipkin/ZipkinRestTemplateSenderTests.java

@@ -86,7 +86,7 @@ void sendSpansShouldSendSpansToZipkin(boolean async) throws IOException {
 		this.mockServer.expect(requestTo(ZIPKIN_URL)).andExpect(method(HttpMethod.POST))
 				.andExpect(content().contentType("application/json")).andExpect(content().string("[span1,span2]"))
 				.andRespond(withStatus(HttpStatus.ACCEPTED));
-		this.makeRequest(List.of(toByteArray("span1"), toByteArray("span2")), async);
+		makeRequest(List.of(toByteArray("span1"), toByteArray("span2")), async);
 	}
 
 	@ParameterizedTest
@@ -95,12 +95,12 @@ void sendSpansShouldHandleHttpFailures(boolean async) {
 		this.mockServer.expect(requestTo(ZIPKIN_URL)).andExpect(method(HttpMethod.POST))
 				.andRespond(withStatus(HttpStatus.INTERNAL_SERVER_ERROR));
 		if (async) {
-			CallbackResult callbackResult = this.makeAsyncRequest(List.of());
+			CallbackResult callbackResult = makeAsyncRequest(List.of());
 			assertThat(callbackResult.success()).isFalse();
 			assertThat(callbackResult.error()).isNotNull().hasMessageContaining("500 Internal Server Error");
 		}
 		else {
-			assertThatThrownBy(() -> this.makeSyncRequest(List.of())).hasMessageContaining("500 Internal Server Error");
+			assertThatThrownBy(() -> makeSyncRequest(List.of())).hasMessageContaining("500 Internal Server Error");
 		}
 	}
 
@@ -114,7 +114,7 @@ void sendSpansShouldCompressData(boolean async) throws IOException {
 		this.mockServer.expect(requestTo(ZIPKIN_URL)).andExpect(method(HttpMethod.POST))
 				.andExpect(header("Content-Encoding", "gzip")).andExpect(content().contentType("application/json"))
 				.andExpect(content().bytes(compressed)).andRespond(withStatus(HttpStatus.ACCEPTED));
-		this.makeRequest(List.of(toByteArray(uncompressed)), async);
+		makeRequest(List.of(toByteArray(uncompressed)), async);
 	}
 
 }

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/tracing/zipkin/ZipkinWebClientSenderTests.java

@@ -46,7 +46,7 @@ class ZipkinWebClientSenderTests extends ZipkinHttpSenderTests {
 
 	private static MockWebServer mockBackEnd;
 
-	public static String ZIPKIN_URL;
+	private static String ZIPKIN_URL;
 
 	@BeforeAll
 	static void beforeAll() throws IOException {
@@ -92,7 +92,7 @@ void checkShouldNotRaiseException() throws InterruptedException {
 	void sendSpansShouldSendSpansToZipkin(boolean async) throws IOException, InterruptedException {
 		mockBackEnd.enqueue(new MockResponse());
 		List<byte[]> encodedSpans = List.of(toByteArray("span1"), toByteArray("span2"));
-		this.makeRequest(encodedSpans, async);
+		makeRequest(encodedSpans, async);
 
 		requestAssertions((request) -> {
 			assertThat(request.getMethod()).isEqualTo("POST");
@@ -106,12 +106,12 @@ void sendSpansShouldSendSpansToZipkin(boolean async) throws IOException, Interru
 	void sendSpansShouldHandleHttpFailures(boolean async) throws InterruptedException {
 		mockBackEnd.enqueue(new MockResponse().setResponseCode(500));
 		if (async) {
-			CallbackResult callbackResult = this.makeAsyncRequest(List.of());
+			CallbackResult callbackResult = makeAsyncRequest(List.of());
 			assertThat(callbackResult.success()).isFalse();
 			assertThat(callbackResult.error()).isNotNull().hasMessageContaining("500 Internal Server Error");
 		}
 		else {
-			assertThatThrownBy(() -> this.makeSyncRequest(List.of())).hasMessageContaining("500 Internal Server Error");
+			assertThatThrownBy(() -> makeSyncRequest(List.of())).hasMessageContaining("500 Internal Server Error");
 		}
 
 		requestAssertions((request) -> assertThat(request.getMethod()).isEqualTo("POST"));
@@ -127,7 +127,7 @@ void sendSpansShouldCompressData(boolean async) throws IOException, InterruptedE
 
 		mockBackEnd.enqueue(new MockResponse());
 
-		this.makeRequest(List.of(toByteArray(uncompressed)), async);
+		makeRequest(List.of(toByteArray(uncompressed)), async);
 
 		requestAssertions((request) -> {
 			assertThat(request.getMethod()).isEqualTo("POST");

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/metrics/web/servlet/WebMvcMetricsFilterTests.java

@@ -315,7 +315,6 @@ void recordHistogram() throws Exception {
 
 	@Test
 	void trailingSlashShouldNotRecordDuplicateMetrics() throws Exception {
-
 		this.mvc.perform(get("/api/c1/simple/10")).andExpect(status().isOk());
 		this.mvc.perform(get("/api/c1/simple/10/")).andExpect(status().isOk());
 		assertThat(this.registry.get("http.server.requests").tags("status", "200", "uri", "/api/c1/simple/{id}").timer()

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/WebResourcesRuntimeHintsTests.java

@@ -56,7 +56,7 @@ void registerHintsWithNoLocation() {
 		assertThat(hints.resources().resourcePatterns()).isEmpty();
 	}
 
-	RuntimeHints register(ClassLoader classLoader) {
+	private RuntimeHints register(ClassLoader classLoader) {
 		RuntimeHints hints = new RuntimeHints();
 		WebResourcesRuntimeHints registrar = new WebResourcesRuntimeHints();
 		registrar.registerHints(hints, classLoader);

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

@@ -86,7 +86,7 @@ class JarFileEntries implements CentralDirectoryVisitor, Iterable<JarEntry> {
 	private JarEntryCertification[] certifications;
 
 	private final Map<Integer, FileHeader> entriesCache = Collections
-			.synchronizedMap(new LinkedHashMap<Integer, FileHeader>(16, 0.75f, true) {
+			.synchronizedMap(new LinkedHashMap<>(16, 0.75f, true) {
 
 				@Override
 				protected boolean removeEldestEntry(Map.Entry<Integer, FileHeader> eldest) {
@@ -338,7 +338,7 @@ JarEntryCertification getCertification(JarEntry entry) throws IOException {
 			// We fall back to use JarInputStream to obtain the certs. This isn't that
 			// fast, but hopefully doesn't happen too often.
 			try (JarInputStream certifiedJarStream = new JarInputStream(this.jarFile.getData().getInputStream())) {
-				java.util.jar.JarEntry certifiedEntry = null;
+				java.util.jar.JarEntry certifiedEntry;
 				while ((certifiedEntry = certifiedJarStream.getNextJarEntry()) != null) {
 					// Entry must be closed to trigger a read and set entry certificates
 					certifiedJarStream.closeEntry();

spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-actuator/src/test/java/smoketest/actuator/ManagementDifferentPortSampleActuatorApplicationTests.java

@@ -33,8 +33,7 @@
  * @author HaiTao Zhang
  */
 @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT,
-		properties = { "management.endpoints.web.base-path=/", "management.server.port=0",
-				"logging.level.org.springframework.web=trace" })
+		properties = { "management.endpoints.web.base-path=/", "management.server.port=0" })
 class ManagementDifferentPortSampleActuatorApplicationTests {
 
 	@LocalManagementPort