diff --git a/spring-amqp/src/main/java/org/springframework/amqp/core/ExchangeBuilder.java b/spring-amqp/src/main/java/org/springframework/amqp/core/ExchangeBuilder.java
index d5e5ffc6..9ce95755 100644
--- a/spring-amqp/src/main/java/org/springframework/amqp/core/ExchangeBuilder.java
+++ b/spring-amqp/src/main/java/org/springframework/amqp/core/ExchangeBuilder.java
@@ -16,8 +16,10 @@
 
 package org.springframework.amqp.core;
 
+import java.util.Arrays;
 import java.util.Map;
 
+import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
 
 /**
@@ -47,7 +49,7 @@ public final class ExchangeBuilder extends AbstractBuilder {
 
 	private boolean declare = true;
 
-	private Object[] admins;
+	private Object[] declaringAdmins;
 
 	/**
 	 * Construct an instance of the appropriate type.
@@ -176,13 +178,15 @@ public final class ExchangeBuilder extends AbstractBuilder {
 	}
 
 	/**
-	 * Admins, or admin bean names that should declare this exchange.
+	 * Admin instances, or admin bean names that should declare this exchange.
 	 * @param admins the admins.
 	 * @return the builder.
 	 * @since 2.1
 	 */
 	public ExchangeBuilder admins(Object... admins) {
-		this.admins = admins;
+		Assert.notNull(admins, "'admins' cannot be null");
+		Assert.noNullElements(admins, "'admins' can't have null elements");
+		this.declaringAdmins = Arrays.copyOf(admins, admins.length);
 		return this;
 	}
 
@@ -207,8 +211,8 @@ public final class ExchangeBuilder extends AbstractBuilder {
 		exchange.setDelayed(this.delayed);
 		exchange.setIgnoreDeclarationExceptions(this.ignoreDeclarationExceptions);
 		exchange.setShouldDeclare(this.declare);
-		if (!ObjectUtils.isEmpty(this.admins)) {
-			exchange.setAdminsThatShouldDeclare(this.admins);
+		if (!ObjectUtils.isEmpty(this.declaringAdmins)) {
+			exchange.setAdminsThatShouldDeclare(this.declaringAdmins);
 		}
 		return exchange;
 	}
diff --git a/spring-rabbit-junit/src/main/java/org/springframework/amqp/rabbit/junit/BrokerRunning.java b/spring-rabbit-junit/src/main/java/org/springframework/amqp/rabbit/junit/BrokerRunning.java
index 42416209..05dacdc5 100644
--- a/spring-rabbit-junit/src/main/java/org/springframework/amqp/rabbit/junit/BrokerRunning.java
+++ b/spring-rabbit-junit/src/main/java/org/springframework/amqp/rabbit/junit/BrokerRunning.java
@@ -218,7 +218,12 @@ public final class BrokerRunning extends TestWatcher {
 
 	private BrokerRunning(boolean assumeOnline, boolean purge, boolean management, String... queues) {
 		this.assumeOnline = assumeOnline;
-		this.queues = queues;
+		if (queues != null) {
+			this.queues = Arrays.copyOf(queues, queues.length);
+		}
+		else {
+			this.queues = null;
+		}
 		this.purge = purge;
 		this.management = management;
 		setPort(this.defaultPort);
diff --git a/spring-rabbit/src/main/java/org/springframework/amqp/rabbit/config/AbstractRabbitListenerContainerFactory.java b/spring-rabbit/src/main/java/org/springframework/amqp/rabbit/config/AbstractRabbitListenerContainerFactory.java
index bf26fe79..70f2c367 100644
--- a/spring-rabbit/src/main/java/org/springframework/amqp/rabbit/config/AbstractRabbitListenerContainerFactory.java
+++ b/spring-rabbit/src/main/java/org/springframework/amqp/rabbit/config/AbstractRabbitListenerContainerFactory.java
@@ -46,6 +46,7 @@ import org.springframework.lang.Nullable;
 import org.springframework.retry.RecoveryCallback;
 import org.springframework.retry.support.RetryTemplate;
 import org.springframework.transaction.PlatformTransactionManager;
+import org.springframework.util.Assert;
 import org.springframework.util.ErrorHandler;
 import org.springframework.util.backoff.BackOff;
 import org.springframework.util.backoff.FixedBackOff;
@@ -295,23 +296,27 @@ public abstract class AbstractRabbitListenerContainerFactory<C extends AbstractM
 
 	/**
 	 * Set post processors which will be applied after the Message is received.
-	 * @param afterReceivePostProcessors the post processors.
+	 * @param postProcessors the post processors.
 	 * @since 2.0
 	 * @see AbstractMessageListenerContainer#setAfterReceivePostProcessors(MessagePostProcessor...)
 	 */
-	public void setAfterReceivePostProcessors(MessagePostProcessor... afterReceivePostProcessors) {
-		this.afterReceivePostProcessors = afterReceivePostProcessors;
+	public void setAfterReceivePostProcessors(MessagePostProcessor... postProcessors) {
+		Assert.notNull(postProcessors, "'postProcessors' cannot be null");
+		Assert.noNullElements(postProcessors, "'postProcessors' cannot have null elements");
+		this.afterReceivePostProcessors = Arrays.copyOf(postProcessors, postProcessors.length);
 	}
 
 	/**
 	 * Set post processors that will be applied before sending replies; added to each
 	 * message listener adapter.
-	 * @param beforeSendReplyPostProcessors the post processors.
+	 * @param postProcessors the post processors.
 	 * @since 2.0.3
 	 * @see AbstractAdaptableMessageListener#setBeforeSendReplyPostProcessors(MessagePostProcessor...)
 	 */
-	public void setBeforeSendReplyPostProcessors(MessagePostProcessor... beforeSendReplyPostProcessors) {
-		this.beforeSendReplyPostProcessors = beforeSendReplyPostProcessors;
+	public void setBeforeSendReplyPostProcessors(MessagePostProcessor... postProcessors) {
+		Assert.notNull(postProcessors, "'postProcessors' cannot be null");
+		Assert.noNullElements(postProcessors, "'postProcessors' cannot have null elements");
+		this.beforeSendReplyPostProcessors = Arrays.copyOf(postProcessors, postProcessors.length);
 	}
 
 	/**
diff --git a/spring-rabbit/src/main/java/org/springframework/amqp/rabbit/config/BindingFactoryBean.java b/spring-rabbit/src/main/java/org/springframework/amqp/rabbit/config/BindingFactoryBean.java
index e87eff88..c7132c6f 100644
--- a/spring-rabbit/src/main/java/org/springframework/amqp/rabbit/config/BindingFactoryBean.java
+++ b/spring-rabbit/src/main/java/org/springframework/amqp/rabbit/config/BindingFactoryBean.java
@@ -76,8 +76,8 @@ public class BindingFactoryBean implements FactoryBean<Binding> {
 		this.ignoreDeclarationExceptions = ignoreDeclarationExceptions;
 	}
 
-	public void setAdminsThatShouldDeclare(AmqpAdmin... adminsThatShouldDeclare) {
-		this.adminsThatShouldDeclare = adminsThatShouldDeclare;
+	public void setAdminsThatShouldDeclare(AmqpAdmin... admins) {
+		this.adminsThatShouldDeclare = admins;
 	}
 
 	@Override
diff --git a/spring-rabbit/src/main/java/org/springframework/amqp/rabbit/config/ListenerContainerFactoryBean.java b/spring-rabbit/src/main/java/org/springframework/amqp/rabbit/config/ListenerContainerFactoryBean.java
index 9cc07066..c1a65752 100644
--- a/spring-rabbit/src/main/java/org/springframework/amqp/rabbit/config/ListenerContainerFactoryBean.java
+++ b/spring-rabbit/src/main/java/org/springframework/amqp/rabbit/config/ListenerContainerFactoryBean.java
@@ -198,11 +198,11 @@ public class ListenerContainerFactoryBean extends AbstractFactoryBean<AbstractMe
 		this.acknowledgeMode = acknowledgeMode;
 	}
 
-	public void setQueueNames(String... queueName) {
+	public void setQueueNames(String... queueName) { // NOSONAR
 		this.queueNames = queueName;
 	}
 
-	public void setQueues(Queue... queues) {
+	public void setQueues(Queue... queues) { // NOSONAR
 		this.queues = queues;
 	}
 
@@ -222,11 +222,11 @@ public class ListenerContainerFactoryBean extends AbstractFactoryBean<AbstractMe
 		this.deBatchingEnabled = deBatchingEnabled;
 	}
 
-	public void setAdviceChain(Advice... adviceChain) {
+	public void setAdviceChain(Advice... adviceChain) { // NOSONAR
 		this.adviceChain = adviceChain;
 	}
 
-	public void setAfterReceivePostProcessors(MessagePostProcessor... afterReceivePostProcessors) {
+	public void setAfterReceivePostProcessors(MessagePostProcessor... afterReceivePostProcessors) { // NOSONAR
 		this.afterReceivePostProcessors = afterReceivePostProcessors;
 	}
 
diff --git a/spring-rabbit/src/main/java/org/springframework/amqp/rabbit/listener/AbstractMessageListenerContainer.java b/spring-rabbit/src/main/java/org/springframework/amqp/rabbit/listener/AbstractMessageListenerContainer.java
index 68e911e3..6b644640 100644
--- a/spring-rabbit/src/main/java/org/springframework/amqp/rabbit/listener/AbstractMessageListenerContainer.java
+++ b/spring-rabbit/src/main/java/org/springframework/amqp/rabbit/listener/AbstractMessageListenerContainer.java
@@ -485,15 +485,15 @@ public abstract class AbstractMessageListenerContainer extends RabbitAccessor
 	 * <p>
 	 * In contrast to {@link #setAfterReceivePostProcessors(MessagePostProcessor...)}, this
 	 * method does not override the previously added afterReceivePostProcessors.
-	 * @param afterReceivePostProcessors the post processor.
+	 * @param postprocessors the post processor.
 	 * @since 2.1.4
 	 */
-	public void addAfterReceivePostProcessors(MessagePostProcessor... afterReceivePostProcessors) {
-		Assert.notNull(afterReceivePostProcessors, "'afterReceivePostProcessors' cannot be null");
+	public void addAfterReceivePostProcessors(MessagePostProcessor... postprocessors) {
+		Assert.notNull(postprocessors, "'afterReceivePostProcessors' cannot be null");
 		if (this.afterReceivePostProcessors == null) {
 			this.afterReceivePostProcessors = new ArrayList<>();
 		}
-		this.afterReceivePostProcessors.addAll(Arrays.asList(afterReceivePostProcessors));
+		this.afterReceivePostProcessors.addAll(Arrays.asList(postprocessors));
 		this.afterReceivePostProcessors = MessagePostProcessorUtils.sort(this.afterReceivePostProcessors);
 	}