Simplify the expression in some equals() methods

Author: ngocnhan-tran1996

spring-amqp/src/main/java/org/springframework/amqp/core/Message.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 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.
@@ -36,6 +36,7 @@
  * @author Gary Russell
  * @author Alex Panchenko
  * @author Artem Bilan
+ * @author Ngoc Nhan
  */
 public class Message implements Serializable {
 
@@ -168,14 +169,9 @@ public boolean equals(Object obj) {
 			return false;
 		}
 		if (this.messageProperties == null) {
-			if (other.messageProperties != null) {
-				return false;
-			}
-		}
-		else if (!this.messageProperties.equals(other.messageProperties)) {
-			return false;
+			return other.messageProperties == null;
 		}
-		return true;
+		return this.messageProperties.equals(other.messageProperties);
 	}
 
 

spring-amqp/src/main/java/org/springframework/amqp/core/MessageProperties.java

@@ -36,6 +36,7 @@
  * @author Artem Bilan
  * @author Csaba Soti
  * @author Raylax Grey
+ * @author Ngoc Nhan
  */
 public class MessageProperties implements Serializable {
 
@@ -812,14 +813,9 @@ else if (!this.type.equals(other.type)) {
 			return false;
 		}
 		if (this.userId == null) {
-			if (other.userId != null) {
-				return false;
-			}
-		}
-		else if (!this.userId.equals(other.userId)) {
-			return false;
+			return other.userId == null;
 		}
-		return true;
+		return this.userId.equals(other.userId);
 	}
 
 	@Override // NOSONAR complexity

spring-amqp/src/main/java/org/springframework/amqp/core/QueueInformation.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 the original author or authors.
+ * Copyright 2019-2024 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.
@@ -20,6 +20,7 @@
  * Information about a queue, resulting from a passive declaration.
  *
  * @author Gary Russell
+ * @author Ngoc Nhan
  * @since 2.2
  *
  */
@@ -70,14 +71,9 @@ public boolean equals(Object obj) {
 		}
 		QueueInformation other = (QueueInformation) obj;
 		if (this.name == null) {
-			if (other.name != null) {
-				return false;
-			}
+			return other.name == null;
 		}
-		else if (!this.name.equals(other.name)) {
-			return false;
-		}
-		return true;
+		return this.name.equals(other.name);
 	}
 
 	@Override