Starting to move to java 11[Do Not Merge]

All version changes are present.

Fixed all Java-Doc Errors and warnings

* Due to the stricter nature of the javadoc compiler we can't wrap <ul> / <ui> in <p>
* We will also need to Push up a test app for taklauncher to work with.   The old one fails to start now.   Or use one of the task starters possibly.
* Built on the work from TASK-439C.   Wait for that merge before merging this one.
* Replaced applicationFailedEvent class attribute with applicaitonFailedException
* Also polished the app used by the taskLauncherSink integration test

spring-cloud-task-stream/src/main/java/org/springframework/cloud/task/batch/listener/EventEmittingItemProcessListener.java

@@ -16,6 +16,7 @@
 package org.springframework.cloud.task.batch.listener;
 
 import org.springframework.batch.core.ItemProcessListener;
+import org.springframework.batch.item.ItemProcessor;
 import org.springframework.cloud.task.batch.listener.support.BatchJobHeaders;
 import org.springframework.cloud.task.batch.listener.support.MessagePublisher;
 import org.springframework.core.Ordered;
@@ -30,7 +31,7 @@ import org.springframework.util.Assert;
  * was filtered ({@link ItemProcessor} returned null), if the result of the processor was
  * equal to the input (via <code>.equals</code>), or if they were not equal.
  * {@link ItemProcessListener#onProcessError(Object, Exception)} provides the exception
- * via the {@link BatchJobHeaders.BATCH_EXCEPTION} message header.
+ * via the {@link BatchJobHeaders#BATCH_EXCEPTION} message header.
  *
  * @author Michael Minella
  * @author Glenn Renfro

spring-cloud-task-stream/src/main/java/org/springframework/cloud/task/batch/listener/EventEmittingItemReadListener.java

@@ -20,6 +20,7 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
 import org.springframework.batch.core.ItemReadListener;
+import org.springframework.batch.item.ItemReader;
 import org.springframework.cloud.task.batch.listener.support.BatchJobHeaders;
 import org.springframework.cloud.task.batch.listener.support.MessagePublisher;
 import org.springframework.core.Ordered;
@@ -32,7 +33,7 @@ import org.springframework.util.Assert;
  *  The {@link ItemReadListener#beforeRead()} and
  *  {@link ItemReadListener#afterRead(Object)} are both no-ops in this implementation.
  *  {@link ItemReadListener#onReadError(Exception)} provides the exception
- * via the {@link BatchJobHeaders.BATCH_EXCEPTION} message header.
+ * via the {@link BatchJobHeaders#BATCH_EXCEPTION} message header.
  *
  * @author Glenn Renfro
  * @author Ali Shahbour

spring-cloud-task-stream/src/main/java/org/springframework/cloud/task/batch/listener/EventEmittingItemWriteListener.java

@@ -33,7 +33,7 @@ import org.springframework.util.Assert;
  *
  *  Each method provides an informational message.
  *  {@link ItemWriteListener#onWriteError(Exception, List)} provides a message as well as
- *  the exception's message via the {@link BatchJobHeaders.BATCH_EXCEPTION} message header.
+ *  the exception's message via the {@link BatchJobHeaders#BATCH_EXCEPTION} message header.
  *
  * @author Glenn Renfro
  * @author Ali Shahbour

spring-cloud-task-stream/src/main/java/org/springframework/cloud/task/batch/listener/EventEmittingSkipListener.java

@@ -30,7 +30,7 @@ import org.springframework.util.Assert;
  * Setups up the SkipProcessListener to emit events to the spring cloud stream output channel.
  *
  * This listener emits the exception's message via the
- * {@link BatchJobHeaders.BATCH_EXCEPTION} message header for each method.  For
+ * {@link BatchJobHeaders#BATCH_EXCEPTION} message header for each method.  For
  * {@link SkipListener#onSkipInProcess(Object, Throwable)} and
  * {@link SkipListener#onSkipInWrite(Object, Throwable)} the body of the message consists
  * of the item that caused the error.

spring-cloud-task-stream/src/main/java/org/springframework/cloud/task/batch/listener/support/JobExecutionEvent.java

@@ -153,14 +153,14 @@ public class JobExecutionEvent extends Entity {
 	}
 
 	/**
-	 * @param exitStatus
+	 * @param exitStatus the exit status for the job.
 	 */
 	public void setExitStatus(ExitStatus exitStatus) {
 		this.exitStatus = exitStatus;
 	}
 
 	/**
-	 * @return the exitCode
+	 * @return the exitCode for the job.
 	 */
 	public ExitStatus getExitStatus() {
 		return this.exitStatus;
@@ -230,9 +230,9 @@ public class JobExecutionEvent extends Entity {
 	}
 
 	/**
-	 * Set the last time this JobExecution was updated.
+	 * Set the last time this {@link JobExecution} was updated.
 	 *
-	 * @param lastUpdated
+	 * @param lastUpdated The date the {@link JobExecution} was updated.
 	 */
 	public void setLastUpdated(Date lastUpdated) {
 		this.lastUpdated = lastUpdated;
@@ -245,7 +245,7 @@ public class JobExecutionEvent extends Entity {
 	/**
 	 * Add the provided throwable to the failure exception list.
 	 *
-	 * @param t
+	 * @param t a {@link Throwable} to be added to the exception list.
 	 */
 	public synchronized void addFailureException(Throwable t) {
 		this.failureExceptions.add(t);

spring-cloud-task-stream/src/main/java/org/springframework/cloud/task/batch/listener/support/StepExecutionEvent.java

@@ -229,6 +229,7 @@ public class StepExecutionEvent extends Entity {
 
 	/**
 	 * Setter for number of rollbacks for this execution
+	 * @param rollbackCount the number of rollbacks for this execution
 	 */
 	public void setRollbackCount(int rollbackCount) {
 		this.rollbackCount = rollbackCount;
@@ -281,7 +282,7 @@ public class StepExecutionEvent extends Entity {
 	}
 
 	/**
-	 * @param exitStatus
+	 * @param exitStatus the {@link ExitStatus} for the step.
 	 */
 	public void setExitStatus(ExitStatus exitStatus) {
 		this.exitStatus = exitStatus;
@@ -340,7 +341,7 @@ public class StepExecutionEvent extends Entity {
 	/**
 	 * Set the number of records skipped on read
 	 *
-	 * @param readSkipCount
+	 * @param readSkipCount the number of records to be skipped on read.
 	 */
 	public void setReadSkipCount(int readSkipCount) {
 		this.readSkipCount = readSkipCount;
@@ -349,7 +350,7 @@ public class StepExecutionEvent extends Entity {
 	/**
 	 * Set the number of records skipped on write
 	 *
-	 * @param writeSkipCount
+	 * @param writeSkipCount the number of records to be skipped on write.
 	 */
 	public void setWriteSkipCount(int writeSkipCount) {
 		this.writeSkipCount = writeSkipCount;
@@ -365,7 +366,7 @@ public class StepExecutionEvent extends Entity {
 	/**
 	 * Set the number of records skipped during processing.
 	 *
-	 * @param processSkipCount
+	 * @param processSkipCount the number of records skip during processing.
 	 */
 	public void setProcessSkipCount(int processSkipCount) {
 		this.processSkipCount = processSkipCount;
@@ -381,7 +382,7 @@ public class StepExecutionEvent extends Entity {
 	/**
 	 * Set the time when the StepExecution was last updated before persisting
 	 *
-	 * @param lastUpdated
+	 * @param lastUpdated the {@link Date} the StepExecution was last updated.
 	 */
 	public void setLastUpdated(Date lastUpdated) {
 		this.lastUpdated = lastUpdated;

spring-cloud-task-stream/src/main/java/org/springframework/cloud/task/batch/listener/support/TaskBatchEventListenerBeanPostProcessor.java

@@ -41,20 +41,20 @@ import org.springframework.util.ReflectionUtils;
 /**
  * Attaches the listeners to the job and its steps.
  * Based on the type of bean that is being processed will determine what listener is attached.
- * <p>
  *     <ul>
  *         <li>If the bean is of type AbstactJob then the JobExecutionListener is registered with this bean.</li>
  *         <li>If the bean is of type AbstactStep then the StepExecutionListener is registered with this bean.</li>
  *         <li>If the bean is of type TaskletStep then the ChunkEventListener is registered with this bean.</li>
  *         <li>If the tasklet for the TaskletStep is of type ChunkOrientedTasklet the following listeners will be registered. </li>
+ *         <li>
  *         <ul>
  *             <li>ItemReadListener with the ChunkProvider.</li>
  *             <li>ItemProcessListener with the ChunkProcessor.</li>
  *             <li>ItemWriteEventsListener with the ChunkProcessor.</li>
  *             <li>SkipEventsListener with the ChunkProcessor.</li>
  *         </ul>
+ *         </li>
  *     </ul>
- * </p>
  * @author Michael Minella
  * @author Glenn Renfro
  */

spring-cloud-task-stream/src/main/java/org/springframework/cloud/task/launcher/TaskLaunchRequest.java

@@ -50,8 +50,8 @@ public class TaskLaunchRequest implements Serializable{
 	 * @param environmentProperties are the environment variables for this task.
 	 * @param deploymentProperties are the variables used to setup task on the platform.
 	 * @param applicationName name to be applied to the launched task.   If set
-	 * 	to null then the launched task name will be "Task-<hash code of the
-	 * 	TaskLaunchRequest>.
+	 * 	to null then the launched task name will be "Task-`hash code of the
+	 * 	TaskLaunchRequest`.
 	 */
 	public TaskLaunchRequest(String uri, List<String> commandlineArguments,
 							Map<String, String> environmentProperties,
@@ -75,14 +75,14 @@ public class TaskLaunchRequest implements Serializable{
 	}
 
 	/**
-	 * Returns the current uri to the artifact for this launch request.
+	 * @return  the current uri to the artifact for this launch request.
 	 */
 	public String getUri() {
 		return uri;
 	}
 
 	/**
-	 * Returns an unmodifiable list of arguments that will be used for the task execution
+	 * @return  an unmodifiable list of arguments that will be used for the task execution
 	 */
 	public List<String> getCommandlineArguments() {
 		return  Collections.unmodifiableList(commandlineArguments);
@@ -117,7 +117,7 @@ public class TaskLaunchRequest implements Serializable{
 
 	/**
 	 * Sets the name to be applied to the launched task.   If set
-	 * 	to null then the launched task name will be "Task-<unique id>".
+	 * 	to null then the launched task name will be "Task-`unique id`".
 	 *
 	 * @param applicationName the name to be
 	 */

spring-cloud-task-stream/src/main/java/org/springframework/cloud/task/launcher/TaskLauncherSink.java

@@ -52,6 +52,7 @@ public class TaskLauncherSink {
 	 * Launches a task upon the receipt of a valid TaskLaunchRequest.
 	 * @param taskLaunchRequest is a TaskLaunchRequest containing the information required to launch
 	 * a task.
+	 * @throws Exception if error occurs during task launch.
 	 */
 	@ServiceActivator(inputChannel = Sink.INPUT)
 	public void taskLauncherSink(TaskLaunchRequest taskLaunchRequest) throws Exception{