Polish contribution

See gh-25446

spring-context-indexer/src/main/java/org/springframework/context/index/processor/CandidateComponentsIndexer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2020 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.

spring-context-support/src/main/java/org/springframework/cache/jcache/interceptor/KeyGeneratorAdapter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2020 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.

spring-jms/src/test/java/org/springframework/jms/core/JmsMessagingTemplateTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.

spring-orm/src/main/java/org/springframework/orm/hibernate5/SessionHolder.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -49,6 +49,7 @@ public class SessionHolder extends EntityManagerHolder {
 	private FlushMode previousFlushMode;
 
 
+	@SuppressWarnings("cast")
 	public SessionHolder(Session session) {
 		// Check below is always true against Hibernate >= 5.2 but not against 5.0/5.1 at runtime
 		super(session instanceof EntityManager ? session : null);

spring-test/src/main/java/org/springframework/test/web/servlet/result/HandlerResultMatchers.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -67,13 +67,11 @@ public class HandlerResultMatchers {
 		return result -> {
 			Object handler = result.getHandler();
 			assertNotNull("No handler", handler);
-			if (handler != null) {
 			Class<?> actual = handler.getClass();
 			if (handler instanceof HandlerMethod) {
 				actual = ((HandlerMethod) handler).getBeanType();
 			}
 			assertEquals("Handler type", type, ClassUtils.getUserClass(actual));
-			}
 		};
 	}
 

spring-tx/src/main/java/org/springframework/dao/support/DataAccessUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2020 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.

spring-web/src/main/java/org/springframework/http/client/SimpleClientHttpRequestFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2020 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.

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2020 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.

spring-web/src/test/java/org/springframework/http/client/HttpComponentsClientHttpRequestFactoryTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -66,7 +66,7 @@ public class HttpComponentsClientHttpRequestFactoryTests extends AbstractHttpReq
 
 		Object config = request.getHttpContext().getAttribute(HttpClientContext.REQUEST_CONFIG);
 		assertThat(config).as("Request config should be set").isNotNull();
-		assertThat(config instanceof RequestConfig).as("Wrong request config type" + config.getClass().getName()).isTrue();
+		assertThat(config).as("Wrong request config type" + config.getClass().getName()).isInstanceOf(RequestConfig.class);
 		RequestConfig requestConfig = (RequestConfig) config;
 		assertThat(requestConfig.getConnectTimeout()).as("Wrong custom connection timeout").isEqualTo(1234);
 		assertThat(requestConfig.getConnectionRequestTimeout()).as("Wrong custom connection request timeout").isEqualTo(4321);