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

pom.xml

@@ -174,7 +174,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>2.10.3</version>
+				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>
@@ -208,7 +208,7 @@
 			<plugin>
 				<groupId>org.jacoco</groupId>
 				<artifactId>jacoco-maven-plugin</artifactId>
-				<version>0.7.5.201505241946</version>
+				<version>0.8.2</version>
 				<executions>
 					<!--
 						Prepares the property pointing to the JaCoCo runtime agent which

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

@@ -25,8 +25,8 @@ import org.springframework.cloud.task.repository.TaskExecution;
 import org.springframework.util.Assert;
 
 /**
- * Map implementation of the {@link TaskBatchDao}.  <note>This is intended for testing
+ * Map implementation of the {@link TaskBatchDao}.  <p> This is intended for
- * purposes only!</note>
+ * testing purposes only!</p>
  *
  * @author Michael Minella
  */

spring-cloud-task-core/src/main/java/org/springframework/cloud/task/configuration/DefaultTaskConfigurer.java

@@ -98,6 +98,7 @@ public class DefaultTaskConfigurer implements TaskConfigurer {
 	 * production use.
 	 * @param tablePrefix the prefix to apply to the task table names used by
 	 * task infrastructure.
+	 * @param context the context to be used.
 	 */
 	public DefaultTaskConfigurer(DataSource dataSource, String tablePrefix, ApplicationContext context) {
 		this.dataSource = dataSource;

spring-cloud-task-core/src/main/java/org/springframework/cloud/task/configuration/TaskConfigurer.java

@@ -53,9 +53,10 @@ public interface TaskConfigurer {
 	TaskExplorer getTaskExplorer();
 
 	/**
-	 * Retrieves the DataSource that will be used for task operations.  If a
+	 * Retrieves the {@link DataSource} that will be used for task operations.  If a
 	 * DataSource is not being used for the implemented TaskConfigurer this
 	 * method will return null.
+	 * @return {@link DataSource} that will be used for task operations.
 	 */
 	DataSource getTaskDataSource();
 }

spring-cloud-task-core/src/main/java/org/springframework/cloud/task/listener/TaskLifecycleListener.java

@@ -103,12 +103,17 @@ public class TaskLifecycleListener implements ApplicationListener<ApplicationEve
 
 	private ApplicationArguments applicationArguments;
 
-	private ApplicationFailedEvent applicationFailedEvent;
+	private Throwable applicationFailedException;
 
 	private ExitCodeEvent exitCodeEvent;
 
 	/**
-	 * @param taskRepository The repository to record executions in.
+	 * @param taskRepository {@link TaskRepository} to record executions.
+	 * @param taskNameResolver {@link TaskNameResolver} used to determine task name for task execution.
+	 * @param applicationArguments {@link ApplicationArguments} to be used for task execution.
+	 * @param taskExplorer {@link TaskExplorer} to be used for task execution.
+	 * @param taskProperties {@link TaskProperties} to be used for the task execution.
+	 * @param taskListenerExecutorObjectFactory {@link TaskListenerExecutorObjectFactory} to initialize TaskListenerExecutor for a task
 	 */
 	public TaskLifecycleListener(TaskRepository taskRepository,
 			TaskNameResolver taskNameResolver,
@@ -143,7 +148,7 @@ public class TaskLifecycleListener implements ApplicationListener<ApplicationEve
 	@Override
 	public void onApplicationEvent(ApplicationEvent applicationEvent) {
 		if(applicationEvent instanceof ApplicationFailedEvent) {
-			this.applicationFailedEvent = (ApplicationFailedEvent) applicationEvent;
+			this.applicationFailedException = ((ApplicationFailedEvent) applicationEvent).getException();
 			doTaskEnd();
 		}
 		else if(applicationEvent instanceof ExitCodeEvent){
@@ -167,13 +172,13 @@ public class TaskLifecycleListener implements ApplicationListener<ApplicationEve
 		if((this.listenerFailed || this.started) && !this.finished) {
 			this.taskExecution.setEndTime(new Date());
 
-			if(this.applicationFailedEvent != null) {
+			if(this.applicationFailedException != null) {
-				this.taskExecution.setErrorMessage(stackTraceToString(this.applicationFailedEvent.getException()));
+				this.taskExecution.setErrorMessage(stackTraceToString(this.applicationFailedException));
 			}
 
 			this.taskExecution.setExitCode(calcExitStatus());
-			if (this.applicationFailedEvent != null) {
+			if (this.applicationFailedException != null) {
-				setExitMessage(invokeOnTaskError(this.taskExecution, this.applicationFailedEvent.getException()));
+				setExitMessage(invokeOnTaskError(this.taskExecution, this.applicationFailedException));
 			}
 
 			setExitMessage(invokeOnTaskEnd(this.taskExecution));
@@ -204,7 +209,7 @@ public class TaskLifecycleListener implements ApplicationListener<ApplicationEve
 		if (this.exitCodeEvent != null) {
 			exitCode = this.exitCodeEvent.getExitCode();
 		}
-		else if (this.listenerFailed || this.applicationFailedEvent != null) {
+		else if (this.listenerFailed || this.applicationFailedException != null) {
 			Throwable exception = this.listenerException;
 			if (exception instanceof TaskExecutionException) {
 				TaskExecutionException taskExecutionException = (TaskExecutionException) exception;
@@ -273,7 +278,7 @@ public class TaskLifecycleListener implements ApplicationListener<ApplicationEve
 		}
 		catch (Throwable t) {
 			// This scenario will result in a context that was not startup.
-
+			this.applicationFailedException = t;
 			this.doTaskEnd();
 			throw t;
 		}

spring-cloud-task-core/src/main/java/org/springframework/cloud/task/repository/TaskRepository.java

@@ -46,9 +46,10 @@ public interface TaskRepository {
 	 * Notifies the repository that a taskExecution has completed.
 	 *
 	 * @param executionId to the task execution to be updated.
-	 * @param exitCode to be stored for this task.
+	 * @param exitCode to be stored for this task execution.
 	 * @param endTime designated when the task completed.
-	 * @param exitMessage to be stored for the task.
+	 * @param exitMessage to be stored for the task execution.
+	 * @param errorMessage to be stored for the task execution.
 	 * @return the updated {@link TaskExecution}
 	 * @since 1.1.0
 	 */
@@ -127,7 +128,8 @@ public interface TaskRepository {
 	 * @param externalExecutionId id assigned to the task by the platform.
 	 * @param parentExecutionId the parent task execution id.
 
-	 * @return
+	 * @return A TaskExecution that contains the information available at the
+	 * beginning of a TaskExecution.
 	 */
 	@Transactional
 	TaskExecution startTaskExecution(long executionid, String taskName,

spring-cloud-task-core/src/main/java/org/springframework/cloud/task/repository/dao/TaskExecutionDao.java

@@ -69,6 +69,7 @@ public interface TaskExecutionDao {
 	 * @param startTime the time task began.
 	 * @param arguments list of key/value pairs that configure the task.
 	 * @param externalExecutionId id assigned to the task by the platform
+	 * @return A TaskExecution containing the information available at task execution start.
 	 * @since 1.1.0
 	 */
 	TaskExecution startTaskExecution(long executionId, String taskName,
@@ -83,6 +84,7 @@ public interface TaskExecutionDao {
 	 * @param arguments list of key/value pairs that configure the task.
 	 * @param externalExecutionId id assigned to the task by the platform
 	 * @param parentExecutionId the parent task execution id.
+	 * @return A TaskExecution containing the information available at task execution start.
 	 * @since 1.2.0
 	 */
 	TaskExecution startTaskExecution(long executionId, String taskName,

spring-cloud-task-core/src/main/java/org/springframework/cloud/task/repository/database/PagingQueryProvider.java

@@ -33,6 +33,7 @@ public interface PagingQueryProvider {
 	 * Initialize the query provider using the provided {@link DataSource} if necessary.
 	 *
 	 * @param dataSource DataSource to use for any initialization
+	 * @throws Exception throws {@link Exception} if query provider initialize fails.
 	 */
 	void init(DataSource dataSource) throws Exception;
 

spring-cloud-task-core/src/main/java/org/springframework/cloud/task/repository/database/support/SqlPagingQueryUtils.java

@@ -71,6 +71,8 @@ public class SqlPagingQueryUtils {
 	 * Generates WHERE clause for queries that require sub selects.
 	 *
 	 * @param provider the paging query provider that will provide the base where clause
+	 * @param remainingPageQuery if true assumes more will be appended to where clause
+	 * @param sql the sql statement to be appended.
 	 */
 	public static void buildWhereClause( AbstractSqlPagingQueryProvider provider,
 						boolean remainingPageQuery, StringBuilder sql) {

spring-cloud-task-core/src/test/java/org/springframework/cloud/task/listener/TaskExecutionListenerTests.java

@@ -101,7 +101,7 @@ public class TaskExecutionListenerTests {
 		assertTrue("Exception should have fired", exceptionFired);
 		assertTrue("BeforeTask Listener should have executed", beforeTaskDidFireOnError);
 		assertTrue("EndTask Listener should have executed", endTaskDidFireOnError);
-		assertFalse("FailedTask Listener should have executed", failedTaskDidFireOnError);
+		assertTrue("FailedTask Listener should have executed", failedTaskDidFireOnError);
 	}
 
 	/**
@@ -118,7 +118,7 @@ public class TaskExecutionListenerTests {
 		}
 		assertTrue("Exception should have fired", exceptionFired);
 		assertTrue("EndTask Listener should have executed", endTaskDidFireOnError);
-		assertFalse("FailedTask Listener should not have executed", failedTaskDidFireOnError);
+		assertTrue("FailedTask Listener should not have executed", failedTaskDidFireOnError);
 	}
 
 	/**

spring-cloud-task-integration-tests/src/test/java/org/springframework/cloud/task/launcher/TaskLauncherSinkTests.java

@@ -60,13 +60,13 @@ import static org.junit.Assert.assertTrue;
 
 @RunWith(SpringRunner.class)
 @SpringBootTest(classes = {TaskLauncherSinkApplication.class, TaskLauncherSinkTests.TaskLauncherConfiguration.class},
-	properties = {"maven.remote-repositories.repo1.url=https://repo.spring.io/libs-milestone-local"})
+	properties = {"maven.remote-repositories.repo1.url=https://repo.spring.io/libs-milestone"})
 public class TaskLauncherSinkTests {
 
 	private final static int WAIT_INTERVAL = 500;
 	private final static int MAX_WAIT_TIME = 10000;
-	private final static String URL = "maven://io.spring.cloud:"
+	private final static String URL = "maven://org.springframework.cloud.task.app:"
-			+ "timestamp-task:jar:1.0.0.RC1";
+			+ "timestamp-task:2.0.0.RELEASE";
 	private final static String DATASOURCE_URL;
 	private final static String DATASOURCE_USER_NAME = "SA";
 	private final static String DATASOURCE_USER_PASSWORD = "''";

spring-cloud-task-samples/batch-events/pom.xml

@@ -82,7 +82,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>2.10.3</version>
+				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>

spring-cloud-task-samples/batch-job/pom.xml

@@ -113,7 +113,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>2.10.3</version>
+				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>

spring-cloud-task-samples/jpa-sample/pom.xml

@@ -126,7 +126,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>2.10.3</version>
+				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>

spring-cloud-task-samples/multiple-datasources/pom.xml

@@ -112,7 +112,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>2.10.3</version>
+				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>

spring-cloud-task-samples/partitioned-batch-job/pom.xml

@@ -87,7 +87,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>2.10.3</version>
+				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>

spring-cloud-task-samples/pom.xml

@@ -48,7 +48,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>2.10.3</version>
+				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>

spring-cloud-task-samples/task-events/pom.xml

@@ -62,7 +62,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>2.10.3</version>
+				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>

spring-cloud-task-samples/taskprocessor/pom.xml

@@ -116,7 +116,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>2.10.3</version>
+				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>

spring-cloud-task-samples/tasksink/pom.xml

@@ -67,7 +67,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>2.10.3</version>
+				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>

spring-cloud-task-samples/timestamp/pom.xml

@@ -126,7 +126,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>2.10.3</version>
+				<version>3.0.1</version>
 				<executions>
 					<execution>
 						<id>attach-javadocs</id>

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
+	 * 	to null then the launched task name will be "Task-`hash code of the
-	 * 	TaskLaunchRequest>.
+	 * 	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{