Modernize code for diamond, isEmpty & pattern matching

Author: ngocnhan-tran1996

Diff for: spring-integration-amqp/src/main/java/org/springframework/integration/amqp/channel/AbstractAmqpChannel.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2024 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.
@@ -45,6 +45,7 @@
  * @author Mark Fisher
  * @author Artem Bilan
  * @author Gary Russell
+ * @author Ngoc Nhan
  *
  * @since 2.1
  */
@@ -94,8 +95,8 @@ public abstract class AbstractAmqpChannel extends AbstractMessageChannel impleme
 	AbstractAmqpChannel(AmqpTemplate amqpTemplate, AmqpHeaderMapper outboundMapper, AmqpHeaderMapper inboundMapper) {
 		Assert.notNull(amqpTemplate, "amqpTemplate must not be null");
 		this.amqpTemplate = amqpTemplate;
-		if (amqpTemplate instanceof RabbitTemplate) {
-			this.rabbitTemplate = (RabbitTemplate) amqpTemplate;
+		if (amqpTemplate instanceof RabbitTemplate castRabbitTemplate) {
+			this.rabbitTemplate = castRabbitTemplate;
 			MessageConverter converter = this.rabbitTemplate.getMessageConverter();
 			if (converter instanceof AllowedListDeserializingMessageConverter allowedListMessageConverter) {
 				allowedListMessageConverter.addAllowedListPatterns(

Diff for: spring-integration-amqp/src/main/java/org/springframework/integration/amqp/channel/PollableAmqpChannel.java

@@ -47,6 +47,7 @@
  * @author Mark Fisher
  * @author Artem Bilan
  * @author Gary Russell
+ * @author Ngoc Nhan
  *
  * @since 2.1
  */
@@ -167,7 +168,7 @@ protected Message<?> doReceive(Long timeout) {
 			if (traceEnabled) {
 				logger.trace("preReceive on channel '" + this + "'");
 			}
-			if (interceptorList.getInterceptors().size() > 0) {
+			if (!interceptorList.getInterceptors().isEmpty()) {
 				interceptorStack = new ArrayDeque<>();
 				if (!interceptorList.preReceive(this, interceptorStack)) {
 					return null;