fix build warnings

spring-batch-integration/src/main/java/org/springframework/batch/integration/async/StepExecutionInterceptor.java

@@ -22,7 +22,6 @@ import org.springframework.integration.support.MessageBuilder;
 import org.springframework.messaging.Message;
 import org.springframework.messaging.MessageChannel;
 import org.springframework.messaging.support.ChannelInterceptor;
-import org.springframework.messaging.support.ChannelInterceptorAdapter;
 
 /**
  * A {@link ChannelInterceptor} that adds the current {@link StepExecution} (if
@@ -34,7 +33,7 @@ import org.springframework.messaging.support.ChannelInterceptorAdapter;
  * @author Dave Syer
  *
  */
-public class StepExecutionInterceptor extends ChannelInterceptorAdapter {
+public class StepExecutionInterceptor implements ChannelInterceptor {
 
 	/**
 	 * The name of the header

spring-batch-integration/src/main/java/org/springframework/batch/integration/chunk/MessageSourcePollerInterceptor.java

@@ -7,7 +7,6 @@ import org.springframework.integration.core.MessageSource;
 import org.springframework.messaging.Message;
 import org.springframework.messaging.MessageChannel;
 import org.springframework.messaging.support.ChannelInterceptor;
-import org.springframework.messaging.support.ChannelInterceptorAdapter;
 import org.springframework.util.Assert;
 
 
@@ -20,7 +19,7 @@ import org.springframework.util.Assert;
  * @author Dave Syer
  *
  */
-public class MessageSourcePollerInterceptor extends ChannelInterceptorAdapter implements InitializingBean {
+public class MessageSourcePollerInterceptor implements ChannelInterceptor, InitializingBean {
 
 	private static Log logger = LogFactory.getLog(MessageSourcePollerInterceptor.class);
 
@@ -70,7 +69,7 @@ public class MessageSourcePollerInterceptor extends ChannelInterceptorAdapter im
 	 * Receive from the {@link MessageSource} and send immediately to the input channel, so that the call that we are
 	 * intercepting always a message to receive.
 	 *
-	 * @see ChannelInterceptorAdapter#preReceive(MessageChannel)
+	 * @see ChannelInterceptor#preReceive(MessageChannel)
 	 */
 	@Override
 	public boolean preReceive(MessageChannel channel) {

spring-batch-integration/src/main/java/org/springframework/batch/integration/chunk/RemoteChunkingMasterStepBuilder.java

@@ -139,6 +139,7 @@ public class RemoteChunkingMasterStepBuilder<I, O> extends FaultTolerantStepBuil
 	 * slow workers time to finish, and responsiveness if there is a dead worker. Defaults to 40.
 	 *
 	 * @param maxWaitTimeouts the maximum number of wait timeouts
+	 * @return this builder instance for fluent chaining
 	 * @see ChunkMessageChannelItemWriter#setMaxWaitTimeouts(int)
 	 */
 	public RemoteChunkingMasterStepBuilder<I, O> maxWaitTimeouts(int maxWaitTimeouts) {
@@ -152,6 +153,7 @@ public class RemoteChunkingMasterStepBuilder<I, O> extends FaultTolerantStepBuil
 	 * overwhelming the receivers.
 	 *
 	 * @param throttleLimit the throttle limit to set
+	 * @return this builder instance for fluent chaining
 	 * @see ChunkMessageChannelItemWriter#setThrottleLimit(long)
 	 */
 	public RemoteChunkingMasterStepBuilder<I, O> throttleLimit(long throttleLimit) {

spring-batch-integration/src/main/java/org/springframework/batch/integration/chunk/RemoteChunkingMasterStepBuilderFactory.java

@@ -50,6 +50,8 @@ public class RemoteChunkingMasterStepBuilderFactory {
 	 * repository and transaction manager.
 	 * 
 	 * @param name the name of the step
+	 * @param <I> type of input items
+	 * @param <O> type of output items
 	 * @return a {@link RemoteChunkingMasterStepBuilder}
 	 */
 	public <I, O> RemoteChunkingMasterStepBuilder<I, O> get(String name) {

spring-batch-integration/src/main/java/org/springframework/batch/integration/chunk/RemoteChunkingWorkerBuilder.java

@@ -108,6 +108,7 @@ public class RemoteChunkingWorkerBuilder<I, O> {
 	 *
 	 * @return the integration flow
 	 */
+	@SuppressWarnings({"unchecked", "rawtypes"})
 	public IntegrationFlow build() {
 		Assert.notNull(this.itemWriter, "An ItemWriter must be provided");
 		Assert.notNull(this.inputChannel, "An InputChannel must be provided");