Polishing

spring-beans/src/main/java/org/springframework/beans/factory/config/DependencyDescriptor.java

@@ -430,7 +430,7 @@ public class DependencyDescriptor extends InjectionPoint implements Serializable
 
 	@Override
 	public int hashCode() {
-		return 31 * super.hashCode() + ObjectUtils.nullSafeHashCode(this.containingClass);
+		return (31 * super.hashCode() + ObjectUtils.nullSafeHashCode(this.containingClass));
 	}
 
 

spring-context/src/main/java/org/springframework/validation/ObjectError.java

 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -144,7 +144,7 @@ public class ObjectError extends DefaultMessageSourceResolvable {
 
 	@Override
 	public int hashCode() {
-		return super.hashCode() * 29 + getObjectName().hashCode();
+		return (29 * super.hashCode() + getObjectName().hashCode());
 	}
 
 	@Override

spring-jms/src/main/java/org/springframework/jms/connection/CachingConnectionFactory.java

@@ -591,7 +591,7 @@ public class CachingConnectionFactory extends SingleConnectionFactory {
 
 		@Override
 		public int hashCode() {
-			return 31 * super.hashCode() + ObjectUtils.nullSafeHashCode(this.selector);
+			return (31 * super.hashCode() + ObjectUtils.nullSafeHashCode(this.selector));
 		}
 
 		@Override

spring-messaging/src/main/java/org/springframework/messaging/handler/invocation/HandlerMethodArgumentResolverComposite.java

 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -110,9 +110,8 @@ public class HandlerMethodArgumentResolverComposite implements HandlerMethodArgu
 	public Object resolveArgument(MethodParameter parameter, Message<?> message) throws Exception {
 		HandlerMethodArgumentResolver resolver = getArgumentResolver(parameter);
 		if (resolver == null) {
-			throw new IllegalStateException(
-					"Unsupported parameter type [" + parameter.getParameterType().getName() + "]." +
-							" supportsParameter should be called first.");
+			throw new IllegalArgumentException("Unsupported parameter type [" +
+					parameter.getParameterType().getName() + "]. supportsParameter should be called first.");
 		}
 		return resolver.resolveArgument(parameter, message);
 	}

spring-test/src/main/java/org/springframework/test/context/web/WebMergedContextConfiguration.java

 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -178,7 +178,7 @@ public class WebMergedContextConfiguration extends MergedContextConfiguration {
 	 */
 	@Override
 	public int hashCode() {
-		return super.hashCode() * 31 + this.resourceBasePath.hashCode();
+		return (31 * super.hashCode() + this.resourceBasePath.hashCode());
 	}
 
 	/**

spring-web/src/main/java/org/springframework/http/HttpStatus.java

 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -447,6 +447,7 @@ public enum HttpStatus {
 	 * Whether this status code is in the HTTP series
 	 * {@link org.springframework.http.HttpStatus.Series#INFORMATIONAL}.
 	 * This is a shortcut for checking the value of {@link #series()}.
+	 * @since 4.0
 	 * @see #series()
 	 */
 	public boolean is1xxInformational() {
@@ -457,6 +458,7 @@ public enum HttpStatus {
 	 * Whether this status code is in the HTTP series
 	 * {@link org.springframework.http.HttpStatus.Series#SUCCESSFUL}.
 	 * This is a shortcut for checking the value of {@link #series()}.
+	 * @since 4.0
 	 * @see #series()
 	 */
 	public boolean is2xxSuccessful() {
@@ -467,6 +469,7 @@ public enum HttpStatus {
 	 * Whether this status code is in the HTTP series
 	 * {@link org.springframework.http.HttpStatus.Series#REDIRECTION}.
 	 * This is a shortcut for checking the value of {@link #series()}.
+	 * @since 4.0
 	 * @see #series()
 	 */
 	public boolean is3xxRedirection() {
@@ -477,6 +480,7 @@ public enum HttpStatus {
 	 * Whether this status code is in the HTTP series
 	 * {@link org.springframework.http.HttpStatus.Series#CLIENT_ERROR}.
 	 * This is a shortcut for checking the value of {@link #series()}.
+	 * @since 4.0
 	 * @see #series()
 	 */
 	public boolean is4xxClientError() {
@@ -487,6 +491,7 @@ public enum HttpStatus {
 	 * Whether this status code is in the HTTP series
 	 * {@link org.springframework.http.HttpStatus.Series#SERVER_ERROR}.
 	 * This is a shortcut for checking the value of {@link #series()}.
+	 * @since 4.0
 	 * @see #series()
 	 */
 	public boolean is5xxServerError() {

spring-web/src/main/java/org/springframework/http/ResponseEntity.java

 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -169,7 +169,7 @@ public class ResponseEntity<T> extends HttpEntity<T> {
 
 	@Override
 	public int hashCode() {
-		return (super.hashCode() * 29 + ObjectUtils.nullSafeHashCode(this.status));
+		return (29 * super.hashCode() + ObjectUtils.nullSafeHashCode(this.status));
 	}
 
 	@Override

spring-web/src/main/java/org/springframework/http/server/reactive/AbstractServerHttpResponse.java

@@ -109,7 +109,7 @@ public abstract class AbstractServerHttpResponse implements ServerHttpResponse {
 	@Override
 	@Nullable
 	public HttpStatus getStatusCode() {
-		return this.statusCode != null ? HttpStatus.resolve(this.statusCode) : null;
+		return (this.statusCode != null ? HttpStatus.resolve(this.statusCode) : null);
 	}
 
 	/**

spring-web/src/main/java/org/springframework/http/server/reactive/ReactorServerHttpResponse.java

 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -19,7 +19,6 @@ package org.springframework.http.server.reactive;
 import java.nio.file.Path;
 
 import io.netty.buffer.ByteBuf;
-import io.netty.handler.codec.http.HttpResponseStatus;
 import io.netty.handler.codec.http.cookie.Cookie;
 import io.netty.handler.codec.http.cookie.DefaultCookie;
 import org.reactivestreams.Publisher;
@@ -62,14 +61,9 @@ class ReactorServerHttpResponse extends AbstractServerHttpResponse implements Ze
 	}
 
 	@Override
-	@SuppressWarnings("ConstantConditions")
 	public HttpStatus getStatusCode() {
 		HttpStatus httpStatus = super.getStatusCode();
-		if (httpStatus == null) {
-			HttpResponseStatus status = this.response.status();
-			httpStatus = status != null ? HttpStatus.resolve(status.code()) : null;
-		}
-		return httpStatus;
+		return (httpStatus != null ? httpStatus : HttpStatus.resolve(this.response.status().code()));
 	}
 
 

spring-web/src/main/java/org/springframework/http/server/reactive/ServletServerHttpResponse.java

 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -100,7 +100,7 @@ class ServletServerHttpResponse extends AbstractListenerServerHttpResponse {
 	@Override
 	public HttpStatus getStatusCode() {
 		HttpStatus httpStatus = super.getStatusCode();
-		return httpStatus != null ? httpStatus : HttpStatus.resolve(this.response.getStatus());
+		return (httpStatus != null ? httpStatus : HttpStatus.resolve(this.response.getStatus()));
 	}
 
 	@Override

spring-web/src/main/java/org/springframework/http/server/reactive/UndertowServerHttpResponse.java

 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -69,8 +69,7 @@ class UndertowServerHttpResponse extends AbstractListenerServerHttpResponse impl
 	}
 
 	private static HttpHeaders createHeaders(HttpServerExchange exchange) {
-		UndertowHeadersAdapter headersMap =
-				new UndertowHeadersAdapter(exchange.getResponseHeaders());
+		UndertowHeadersAdapter headersMap = new UndertowHeadersAdapter(exchange.getResponseHeaders());
 		return new HttpHeaders(headersMap);
 	}
 
@@ -84,7 +83,7 @@ class UndertowServerHttpResponse extends AbstractListenerServerHttpResponse impl
 	@Override
 	public HttpStatus getStatusCode() {
 		HttpStatus httpStatus = super.getStatusCode();
-		return httpStatus != null ? httpStatus : HttpStatus.resolve(this.exchange.getStatusCode());
+		return (httpStatus != null ? httpStatus : HttpStatus.resolve(this.exchange.getStatusCode()));
 	}
 
 

spring-web/src/main/java/org/springframework/web/method/support/HandlerMethodArgumentResolverComposite.java

 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -119,9 +119,8 @@ public class HandlerMethodArgumentResolverComposite implements HandlerMethodArgu
 
 		HandlerMethodArgumentResolver resolver = getArgumentResolver(parameter);
 		if (resolver == null) {
-			throw new IllegalArgumentException(
-					"Unsupported parameter type [" + parameter.getParameterType().getName() + "]." +
-							" supportsParameter should be called first.");
+			throw new IllegalArgumentException("Unsupported parameter type [" +
+					parameter.getParameterType().getName() + "]. supportsParameter should be called first.");
 		}
 		return resolver.resolveArgument(parameter, mavContainer, webRequest, binderFactory);
 	}

spring-web/src/test/java/org/springframework/web/method/support/HandlerMethodArgumentResolverCompositeTests.java

 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -40,7 +40,7 @@ public class HandlerMethodArgumentResolverCompositeTests {
 
 
 	@Before
-	public void setUp() throws Exception {
+	public void setup() throws Exception {
 		this.resolverComposite = new HandlerMethodArgumentResolverComposite();
 
 		Method method = getClass().getDeclaredMethod("handle", Integer.class, String.class);
@@ -50,7 +50,7 @@ public class HandlerMethodArgumentResolverCompositeTests {
 
 
 	@Test
-	public void supportsParameter() {
+	public void supportsParameter() throws Exception {
 		this.resolverComposite.addResolver(new StubArgumentResolver(Integer.class));
 
 		assertTrue(this.resolverComposite.supportsParameter(paramInt));

spring-web/src/test/java/org/springframework/web/method/support/HandlerMethodReturnValueHandlerCompositeTests.java

 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -30,6 +30,7 @@ import static org.mockito.Mockito.when;
 
 /**
  * Test fixture with {@link HandlerMethodReturnValueHandlerComposite}.
+ *
  * @author Rossen Stoyanchev
  */
 @SuppressWarnings("unused")
@@ -47,8 +48,7 @@ public class HandlerMethodReturnValueHandlerCompositeTests {
 
 
 	@Before
-	public void setUp() throws Exception {
-
+	public void setup() throws Exception {
 		this.integerType = new MethodParameter(getClass().getDeclaredMethod("handleInteger"), -1);
 		this.stringType = new MethodParameter(getClass().getDeclaredMethod("handleString"), -1);
 
@@ -61,6 +61,7 @@ public class HandlerMethodReturnValueHandlerCompositeTests {
 		mavContainer = new ModelAndViewContainer();
 	}
 
+
 	@Test
 	public void supportsReturnType() throws Exception {
 		assertTrue(this.handlers.supportsReturnType(this.integerType));
@@ -84,9 +85,8 @@ public class HandlerMethodReturnValueHandlerCompositeTests {
 		verifyNoMoreInteractions(anotherIntegerHandler);
 	}
 
-	@Test // SPR-13083
+	@Test  // SPR-13083
 	public void handleReturnValueWithAsyncHandler() throws Exception {
-
 		Promise<Integer> promise = new Promise<>();
 		MethodParameter promiseType = new MethodParameter(getClass().getDeclaredMethod("handlePromise"), -1);
 

spring-webflux/src/main/java/org/springframework/web/reactive/function/client/DefaultClientResponseBuilder.java

 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -129,13 +129,11 @@ final class DefaultClientResponseBuilder implements ClientResponse.Builder {
 
 	@Override
 	public ClientResponse build() {
-
 		ClientHttpResponse httpResponse =
 				new BuiltClientHttpResponse(this.statusCode, this.headers, this.cookies, this.body);
 
 		// When building ClientResponse manually, the ClientRequest.logPrefix() has to be passed,
 		// e.g. via ClientResponse.Builder, but this (builder) is not used currently.
-
 		return new DefaultClientResponse(httpResponse, this.strategies, "");
 	}
 

spring-webflux/src/main/java/org/springframework/web/reactive/function/client/DefaultWebClient.java

@@ -423,7 +423,7 @@ class DefaultWebClient implements WebClient {
 		private static IntPredicate toIntPredicate(Predicate<HttpStatus> predicate) {
 			return value -> {
 				HttpStatus status = HttpStatus.resolve(value);
-				return (status != null) && predicate.test(status);
+				return (status != null && predicate.test(status));
 			};
 		}
 
@@ -436,7 +436,6 @@ class DefaultWebClient implements WebClient {
 			}
 			this.statusHandlers.add(new StatusHandler(statusCodePredicate,
 					(clientResponse, request) -> exceptionFunction.apply(clientResponse)));
-
 			return this;
 		}
 
@@ -539,8 +538,6 @@ class DefaultWebClient implements WebClient {
 			public StatusHandler(IntPredicate predicate,
 					BiFunction<ClientResponse, HttpRequest, Mono<? extends Throwable>> exceptionFunction) {
 
-				Assert.notNull(predicate, "Predicate must not be null");
-				Assert.notNull(exceptionFunction, "Function must not be null");
 				this.predicate = predicate;
 				this.exceptionFunction = exceptionFunction;
 			}
@@ -552,8 +549,6 @@ class DefaultWebClient implements WebClient {
 			public Mono<? extends Throwable> apply(ClientResponse response, HttpRequest request) {
 				return this.exceptionFunction.apply(response, request);
 			}
-
-
 		}
 	}
 

spring-webflux/src/main/java/org/springframework/web/reactive/function/client/WebClient.java

@@ -583,6 +583,7 @@ public interface WebClient {
 		RequestHeadersSpec<?> syncBody(Object body);
 	}
 
+
 	/**
 	 * Contract for specifying response operations following the exchange.
 	 */
@@ -666,24 +667,22 @@ public interface WebClient {
 		 * status code is 4xx or 5xx
 		 */
 		<T> Flux<T> bodyToFlux(ParameterizedTypeReference<T> typeReference);
-
 	}
 
 
 	/**
 	 * Contract for specifying request headers and URI for a request.
-	 *
 	 * @param <S> a self reference to the spec type
 	 */
 	interface RequestHeadersUriSpec<S extends RequestHeadersSpec<S>>
 			extends UriSpec<S>, RequestHeadersSpec<S> {
 	}
 
+
 	/**
 	 * Contract for specifying request headers, body and URI for a request.
 	 */
 	interface RequestBodyUriSpec extends RequestBodySpec, RequestHeadersUriSpec<RequestBodySpec> {
 	}
 
-
 }