I'm too lazy to put in a comment

01.framework-introductions/jpa-in-10-steps/pom.xml

@@ -21,16 +21,22 @@
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<java.version>1.8</java.version>
+		<java.version>9</java.version>
 	</properties>
 
 	<dependencies>
-		
+
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-data-jpa</artifactId>
 		</dependency>
-
+
+
+		<dependency>
+			<groupId>javax.transaction</groupId>
+			<artifactId>javax.transaction-api</artifactId>
+		</dependency>
+
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-web</artifactId>
@@ -55,6 +61,13 @@
 				<groupId>org.springframework.boot</groupId>
 				<artifactId>spring-boot-maven-plugin</artifactId>
 			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-surefire-plugin</artifactId>
+				<configuration><!-- https://issues.apache.org/jira/browse/SUREFIRE-1424 -->
+					<argLine>--add-modules java.base</argLine>
+				</configuration>
+			</plugin>
 		</plugins>
 	</build>
 

spring-boot-2-0-0-Upgrade-notes.md

@@ -38,6 +38,7 @@ Take a look at https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-2
 - 03.MicroservicesWithSpringCloud-Step-27---Connecting-Currency-Exchange-Microservice-to-Eureka
 - 03.MicroservicesWithSpringCloud-Step-36---Implementing-Spring-Cloud-Sleuth
 - 03.MicroservicesWithSpringCloud-Step-39---Setting-up-Distributed-Tracing-with-Zipkin
+- 03.MicroservicesWithSpringCloud-Step-41---Using-Zipkin-UI-Dashboard-to-trace-requests
 - 04.JPA-In-Depth-Step-59---Transaction-Management---ACID-Properties
 - 05.Spring-Boot-Advanced-Step-13-Spring-Boot-Actuator-Monitor-your-Spring-Boot-applications!
 - 05.Spring-Boot-Advanced-Step-27-Configure-Spring-Security-user-roles-for-survey-and-other-services-Part1