Update: Spring Boot 2.4.2 and Java 15

Author: mechero

README.md

@@ -4,9 +4,9 @@
 
 This sample application shows how to use basic Spring Boot configuration to set up a producer to a topic with multiple partitions and a consumer group with three different consumers.
 
-The full explanation is on The Practical Developer website: [Spring Boot and Kafka - Practical Configuration Examples](https://thepracticaldeveloper.com/2018/11/24/spring-boot-kafka-config/).
+The complete post with details is on The Practical Developer website: [Spring Boot and Kafka - Practical Configuration Examples](https://thepracticaldeveloper.com/spring-boot-kafka-config/).
 
-[![Kafka Configuration Example](img/kafka-configuration-example.jpg)](https://thepracticaldeveloper.com/2018/11/24/spring-boot-kafka-config/)
+[![Kafka Configuration Example](img/kafka-configuration-example.jpg)](https://thepracticaldeveloper.com/spring-boot-kafka-config/)
 
 ## Multiple serialization / deserialization formats
 
@@ -18,8 +18,12 @@ To illustrate the different configuration options, this application deserializes
 
 ## Docker compose
 
-This code includes a `docker-compose.yml` file so you can use Docker Compose to start up Kafka, no installation needed.
+This code includes a `docker-compose.yml` file, so you can use Docker Compose to start up Kafka without installing anything.
 
-## Did I help you?
+## Was it useful?
 
-Give a star to this project and/or [buy me a coffee](https://buymeacoff.ee/ZyLJNUR) 😄
+Give a star to this project, and consider some extra readings:
+
+* [My practical book about building a microservices architecture from scratch](https://amzn.to/3nADn4q).
+* [The Full Reactive Stack Guide](https://leanpub.com/full-reactive/).
+* [The Practical Architecture Guide](https://leanpub.com/practical-software-architecture).

pom.xml

@@ -14,14 +14,14 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.1.0.RELEASE</version>
+		<version>2.4.2</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-		<java.version>10</java.version>
+		<java.version>15</java.version>
 	</properties>
 
 	<dependencies>

src/test/java/io/tpd/kafkaexample/KafkaExampleApplicationTests.java

@@ -1,11 +1,8 @@
 package io.tpd.kafkaexample;
 
-import org.junit.Test;
-import org.junit.runner.RunWith;
+import org.junit.jupiter.api.Test;
 import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.test.context.junit4.SpringRunner;
 
-@RunWith(SpringRunner.class)
 @SpringBootTest
 public class KafkaExampleApplicationTests {