Pruning of outdated JDK 6/7 references (plus related polishing)

(cherry picked from commit b325c74216)

spring-aop/src/main/java/org/springframework/aop/config/AopConfigUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -32,11 +32,10 @@ import org.springframework.util.Assert;
 /**
  * Utility class for handling registration of AOP auto-proxy creators.
  *
- * <p>Only a single auto-proxy creator can be registered yet multiple concrete
- * implementations are available. Therefore this class wraps a simple escalation
- * protocol, allowing classes to request a particular auto-proxy creator and know
- * that class, {@code or a subclass thereof}, will eventually be resident
- * in the application context.
+ * <p>Only a single auto-proxy creator should be registered yet multiple concrete
+ * implementations are available. This class provides a simple escalation protocol,
+ * allowing a caller to request a particular auto-proxy creator and know that creator,
+ * <i>or a more capable variant thereof</i>, will be registered as a post-processor.
  *
  * @author Rob Harrop
  * @author Juergen Hoeller
@@ -55,12 +54,10 @@ public abstract class AopConfigUtils {
 	/**
 	 * Stores the auto proxy creator classes in escalation order.
 	 */
-	private static final List<Class<?>> APC_PRIORITY_LIST = new ArrayList<>();
+	private static final List<Class<?>> APC_PRIORITY_LIST = new ArrayList<>(3);
 
-	/**
-	 * Setup the escalation list.
-	 */
 	static {
+		// Set up the escalation list...
 		APC_PRIORITY_LIST.add(InfrastructureAdvisorAutoProxyCreator.class);
 		APC_PRIORITY_LIST.add(AspectJAwareAdvisorAutoProxyCreator.class);
 		APC_PRIORITY_LIST.add(AnnotationAwareAspectJAutoProxyCreator.class);
@@ -73,8 +70,8 @@ public abstract class AopConfigUtils {
 	}
 
 	@Nullable
-	public static BeanDefinition registerAutoProxyCreatorIfNecessary(BeanDefinitionRegistry registry,
-			@Nullable Object source) {
+	public static BeanDefinition registerAutoProxyCreatorIfNecessary(
+			BeanDefinitionRegistry registry, @Nullable Object source) {
 
 		return registerOrEscalateApcAsRequired(InfrastructureAdvisorAutoProxyCreator.class, registry, source);
 	}
@@ -85,8 +82,8 @@ public abstract class AopConfigUtils {
 	}
 
 	@Nullable
-	public static BeanDefinition registerAspectJAutoProxyCreatorIfNecessary(BeanDefinitionRegistry registry,
-			@Nullable Object source) {
+	public static BeanDefinition registerAspectJAutoProxyCreatorIfNecessary(
+			BeanDefinitionRegistry registry, @Nullable Object source) {
 
 		return registerOrEscalateApcAsRequired(AspectJAwareAdvisorAutoProxyCreator.class, registry, source);
 	}
@@ -97,8 +94,8 @@ public abstract class AopConfigUtils {
 	}
 
 	@Nullable
-	public static BeanDefinition registerAspectJAnnotationAutoProxyCreatorIfNecessary(BeanDefinitionRegistry registry,
-			@Nullable Object source) {
+	public static BeanDefinition registerAspectJAnnotationAutoProxyCreatorIfNecessary(
+			BeanDefinitionRegistry registry, @Nullable Object source) {
 
 		return registerOrEscalateApcAsRequired(AnnotationAwareAspectJAutoProxyCreator.class, registry, source);
 	}
@@ -118,8 +115,8 @@ public abstract class AopConfigUtils {
 	}
 
 	@Nullable
-	private static BeanDefinition registerOrEscalateApcAsRequired(Class<?> cls, BeanDefinitionRegistry registry,
-			@Nullable Object source) {
+	private static BeanDefinition registerOrEscalateApcAsRequired(
+			Class<?> cls, BeanDefinitionRegistry registry, @Nullable Object source) {
 
 		Assert.notNull(registry, "BeanDefinitionRegistry must not be null");
 

spring-aop/src/main/java/org/springframework/aop/config/AopNamespaceUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -28,11 +28,11 @@ import org.springframework.lang.Nullable;
  * Utility class for handling registration of auto-proxy creators used internally
  * by the '{@code aop}' namespace tags.
  *
- * <p>Only a single auto-proxy creator can be registered and multiple tags may wish
- * to register different concrete implementations. As such this class delegates to
- * {@link AopConfigUtils} which wraps a simple escalation protocol. Therefore classes
- * may request a particular auto-proxy creator and know that class, <i>or a subclass
- * thereof</i>, will eventually be resident in the application context.
+ * <p>Only a single auto-proxy creator should be registered and multiple configuration
+ * elements may wish to register different concrete implementations. As such this class
+ * delegates to {@link AopConfigUtils} which provides a simple escalation protocol.
+ * Callers may request a particular auto-proxy creator and know that creator,
+ * <i>or a more capable variant thereof</i>, will be registered as a post-processor.
  *
  * @author Rob Harrop
  * @author Juergen Hoeller
@@ -95,9 +95,8 @@ public abstract class AopNamespaceUtils {
 
 	private static void registerComponentIfNecessary(@Nullable BeanDefinition beanDefinition, ParserContext parserContext) {
 		if (beanDefinition != null) {
-			BeanComponentDefinition componentDefinition =
-					new BeanComponentDefinition(beanDefinition, AopConfigUtils.AUTO_PROXY_CREATOR_BEAN_NAME);
-			parserContext.registerComponent(componentDefinition);
+			parserContext.registerComponent(
+					new BeanComponentDefinition(beanDefinition, AopConfigUtils.AUTO_PROXY_CREATOR_BEAN_NAME));
 		}
 	}
 

spring-context/src/main/java/org/springframework/scheduling/concurrent/ForkJoinPoolFactoryBean.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -27,12 +27,6 @@ import org.springframework.lang.Nullable;
 /**
  * A Spring {@link FactoryBean} that builds and exposes a preconfigured {@link ForkJoinPool}.
  *
- * <p>For details on the ForkJoinPool API and its use with RecursiveActions, see the
- * <a href="http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/ForkJoinPool.html">JDK 7 javadoc</a>.
- *
- * <p>{@code jsr166.jar}, containing {@code java.util.concurrent} updates for Java 6, can be obtained
- * from the <a href="http://gee.cs.oswego.edu/dl/concurrency-interest/">concurrency interest website</a>.
- *
  * @author Juergen Hoeller
  * @since 3.1
  */

spring-context/src/main/java/org/springframework/scheduling/concurrent/ScheduledExecutorFactoryBean.java

@@ -111,7 +111,7 @@ public class ScheduledExecutorFactoryBean extends ExecutorConfigurationSupport
 	}
 
 	/**
-	 * Set the remove-on-cancel mode on {@link ScheduledThreadPoolExecutor} (JDK 7+).
+	 * Set the remove-on-cancel mode on {@link ScheduledThreadPoolExecutor}.
 	 * <p>Default is {@code false}. If set to {@code true}, the target executor will be
 	 * switched into remove-on-cancel mode (if possible, with a soft fallback otherwise).
 	 */

spring-context/src/main/java/org/springframework/scheduling/concurrent/ThreadPoolTaskScheduler.java

@@ -88,7 +88,7 @@ public class ThreadPoolTaskScheduler extends ExecutorConfigurationSupport
 	}
 
 	/**
-	 * Set the remove-on-cancel mode on {@link ScheduledThreadPoolExecutor} (JDK 7+).
+	 * Set the remove-on-cancel mode on {@link ScheduledThreadPoolExecutor}.
 	 * <p>Default is {@code false}. If set to {@code true}, the target executor will be
 	 * switched into remove-on-cancel mode (if possible, with a soft fallback otherwise).
 	 * <p><b>This setting can be modified at runtime, for example through JMX.</b>

spring-core/src/main/java/org/springframework/core/annotation/OrderUtils.java

@@ -49,7 +49,7 @@ public abstract class OrderUtils {
 					ClassUtils.forName("javax.annotation.Priority", OrderUtils.class.getClassLoader());
 		}
 		catch (Throwable ex) {
-			// javax.annotation.Priority not available, or present but not loadable (on JDK 6)
+			// javax.annotation.Priority not available
 			priorityAnnotationType = null;
 		}
 	}

spring-core/src/test/java/org/springframework/core/annotation/AnnotationUtilsTests.java

@@ -145,12 +145,7 @@ public class AnnotationUtilsTests {
 		assertNull(getAnnotation(bridgeMethod, Order.class));
 		assertNotNull(findAnnotation(bridgeMethod, Order.class));
 
-		// As of OpenJDK 8 b99, invoking getAnnotation() on a bridge method actually finds
-		// an annotation on its 'bridged' method. This differs from the previous behavior
-		// of JDK 5 through 7 and from the current behavior of the Eclipse compiler;
-		// however, we need to ensure that the tests pass in the Gradle build. So we
-		// comment out the following assertion.
-		// assertNull(bridgeMethod.getAnnotation(Transactional.class));
+		assertNotNull(bridgeMethod.getAnnotation(Transactional.class));
 		assertNotNull(getAnnotation(bridgeMethod, Transactional.class));
 		assertNotNull(findAnnotation(bridgeMethod, Transactional.class));
 	}

spring-jdbc/src/main/java/org/springframework/jdbc/core/SqlRowSetResultSetExtractor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -58,15 +58,15 @@ public class SqlRowSetResultSetExtractor implements ResultSetExtractor<SqlRowSet
 	}
 
 	/**
-	 * Create a SqlRowSet that wraps the given ResultSet,
+	 * Create a {@link SqlRowSet} that wraps the given {@link ResultSet},
 	 * representing its data in a disconnected fashion.
-	 * <p>This implementation creates a Spring ResultSetWrappingSqlRowSet
-	 * instance that wraps a standard JDBC CachedRowSet instance.
+	 * <p>This implementation creates a Spring {@link ResultSetWrappingSqlRowSet}
+	 * instance that wraps a standard JDBC {@link CachedRowSet} instance.
 	 * Can be overridden to use a different implementation.
 	 * @param rs the original ResultSet (connected)
 	 * @return the disconnected SqlRowSet
 	 * @throws SQLException if thrown by JDBC methods
-	 * @see #newCachedRowSet
+	 * @see #newCachedRowSet()
 	 * @see org.springframework.jdbc.support.rowset.ResultSetWrappingSqlRowSet
 	 */
 	protected SqlRowSet createSqlRowSet(ResultSet rs) throws SQLException {
@@ -76,14 +76,14 @@ public class SqlRowSetResultSetExtractor implements ResultSetExtractor<SqlRowSet
 	}
 
 	/**
-	 * Create a new CachedRowSet instance, to be populated by
+	 * Create a new {@link CachedRowSet} instance, to be populated by
 	 * the {@code createSqlRowSet} implementation.
-	 * <p>The default implementation uses JDBC 4.1's RowSetProvider
-	 * when running on JDK 7 or higher, falling back to Sun's
-	 * {@code com.sun.rowset.CachedRowSetImpl} class on older JDKs.
+	 * <p>The default implementation uses JDBC 4.1's {@link RowSetFactory}.
 	 * @return a new CachedRowSet instance
 	 * @throws SQLException if thrown by JDBC methods
 	 * @see #createSqlRowSet
+	 * @see RowSetProvider#newFactory()
+	 * @see RowSetFactory#createCachedRowSet()
 	 */
 	protected CachedRowSet newCachedRowSet() throws SQLException {
 		return rowSetFactory.createCachedRowSet();

spring-web/src/main/java/org/springframework/remoting/caucho/HessianExporter.java

@@ -57,6 +57,9 @@ import org.springframework.util.CommonsLogWriter;
  */
 public class HessianExporter extends RemoteExporter implements InitializingBean {
 
+	/**
+	 * The content type for hessian ({@code application/x-hessian}).
+	 */
 	public static final String CONTENT_TYPE_HESSIAN = "application/x-hessian";
 
 

spring-web/src/main/java/org/springframework/remoting/caucho/HessianServiceExporter.java

@@ -63,10 +63,10 @@ public class HessianServiceExporter extends HessianExporter implements HttpReque
 
 		response.setContentType(CONTENT_TYPE_HESSIAN);
 		try {
-		  invoke(request.getInputStream(), response.getOutputStream());
+			invoke(request.getInputStream(), response.getOutputStream());
 		}
 		catch (Throwable ex) {
-		  throw new NestedServletException("Hessian skeleton invocation failed", ex);
+			throw new NestedServletException("Hessian skeleton invocation failed", ex);
 		}
 	}
 

spring-web/src/main/java/org/springframework/remoting/jaxws/SimpleHttpServerJaxWsServiceExporter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -164,8 +164,8 @@ public class SimpleHttpServerJaxWsServiceExporter extends AbstractJaxWsServiceEx
 			InetSocketAddress address = (this.hostname != null ?
 					new InetSocketAddress(this.hostname, this.port) : new InetSocketAddress(this.port));
 			HttpServer server = HttpServer.create(address, this.backlog);
-			if (this.logger.isInfoEnabled()) {
-				this.logger.info("Starting HttpServer at address " + address);
+			if (logger.isInfoEnabled()) {
+				logger.info("Starting HttpServer at address " + address);
 			}
 			server.start();
 			this.server = server;

spring-web/src/main/java/org/springframework/remoting/jaxws/SimpleJaxWsServiceExporter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -30,11 +30,7 @@ import javax.xml.ws.WebServiceProvider;
  *
  * <p>Note that this exporter will only work if the JAX-WS runtime actually
  * supports publishing with an address argument, i.e. if the JAX-WS runtime
- * ships an internal HTTP server. This is the case with the JAX-WS runtime
- * that's included in Sun's JDK 6 but not with the standalone JAX-WS 2.1 RI.
- *
- * <p>For explicit configuration of JAX-WS endpoints with Sun's JDK 6
- * HTTP server, consider using {@link SimpleHttpServerJaxWsServiceExporter}!
+ * ships an internal HTTP server.
  *
  * @author Juergen Hoeller
  * @since 2.5
@@ -44,6 +40,9 @@ import javax.xml.ws.WebServiceProvider;
  */
 public class SimpleJaxWsServiceExporter extends AbstractJaxWsServiceExporter {
 
+	/**
+	 * The default base address.
+	 */
 	public static final String DEFAULT_BASE_ADDRESS = "http://localhost:8080/";
 
 	private String baseAddress = DEFAULT_BASE_ADDRESS;

spring-websocket/src/main/java/org/springframework/web/socket/handler/ConcurrentWebSocketSessionDecorator.java

@@ -156,7 +156,7 @@ public class ConcurrentWebSocketSessionDecorator extends WebSocketSessionDecorat
 			}
 			finally {
 				this.sendStartTime = 0;
-				flushLock.unlock();
+				this.flushLock.unlock();
 			}
 			return true;
 		}