Upgrade to Boot 2.4.2

Keeping the build files current and adding deep links to the Intializr.

.travis.yml

@@ -1,7 +1,7 @@
 sudo: false
 language: java
 jdk:
-- openjdk8
+- openjdk11
 script:
 - test/run.sh
 notifications:

README.adoc

@@ -1,5 +1,4 @@
 :spring_version: current
-:spring_boot_version: 2.3.2.RELEASE
 :jackson: https://wiki.fasterxml.com/JacksonHome
 :AtMessageMapping: https://docs.spring.io/spring/docs/{spring_version}/javadoc-api/org/springframework/messaging/handler/annotation/MessageMapping.html
 :AtController: https://docs.spring.io/spring/docs/{spring_version}/javadoc-api/org/springframework/stereotype/Controller.html
@@ -39,6 +38,7 @@ Initializr]. The Initializr offers a fast way to pull in all the dependencies yo
 an application and does a lot of the set up for you. This example needs only the Websocket
 dependency.
 
+You can get a Maven build file with the necessary dependencies directly from the https://start.spring.io/#!type=maven-project&language=java&platformVersion=2.4.2.RELEASE&packaging=jar&jvmVersion=11&groupId=com.example&artifactId=messaging-stomp-websocket&name=messaging-stomp-websocket&description=Demo%20project%20for%20Spring%20Boot&packageName=com.example.messaging-stomp-websocket&dependencies=websocket[Spring Initializr].
 The following listing shows the `pom.xml` file that is created when you choose Maven:
 
 ====
@@ -48,6 +48,7 @@ include::initial/pom.xml[]
 ----
 ====
 
+You can get a Gradle build file with the necessary dependencies directly from the https://start.spring.io/#!type=gradle-project&language=java&platformVersion=2.4.2.RELEASE&packaging=jar&jvmVersion=11&groupId=com.example&artifactId=messaging-stomp-websocket&name=messaging-stomp-websocket&description=Demo%20project%20for%20Spring%20Boot&packageName=com.example.messaging-stomp-websocket&dependencies=websocket[Spring Initializr].
 The following listing shows the `build.gradle` file that is created when you choose Gradle:
 
 ====

complete/build.gradle

@@ -1,12 +1,12 @@
 plugins {
-	id 'org.springframework.boot' version '2.3.2.RELEASE'
-	id 'io.spring.dependency-management' version '1.0.8.RELEASE'
+	id 'org.springframework.boot' version '2.4.2'
+	id 'io.spring.dependency-management' version '1.0.11.RELEASE'
 	id 'java'
 }
 
 group = 'com.example'
 version = '0.0.1-SNAPSHOT'
-sourceCompatibility = '1.8'
+sourceCompatibility = '11'
 
 repositories {
 	mavenCentral()
@@ -19,9 +19,7 @@ dependencies {
 	implementation 'org.webjars:stomp-websocket:2.3.3'
 	implementation 'org.webjars:bootstrap:3.3.7'
 	implementation 'org.webjars:jquery:3.1.1-1'
-	testImplementation('org.springframework.boot:spring-boot-starter-test') {
-		exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
-	}
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 }
 
 test {

complete/pom.xml

@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.3.2.RELEASE</version>
+		<version>2.4.2</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.example</groupId>
@@ -13,11 +13,9 @@
 	<version>0.0.1-SNAPSHOT</version>
 	<name>messaging-stomp-websocket</name>
 	<description>Demo project for Spring Boot</description>
-
 	<properties>
-		<java.version>1.8</java.version>
+		<java.version>11</java.version>
 	</properties>
-
 	<dependencies>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -52,12 +50,6 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-test</artifactId>
 			<scope>test</scope>
-			<exclusions>
-				<exclusion>
-					<groupId>org.junit.vintage</groupId>
-					<artifactId>junit-vintage-engine</artifactId>
-				</exclusion>
-			</exclusions>
 		</dependency>
 	</dependencies>
 

initial/build.gradle

@@ -1,12 +1,12 @@
 plugins {
-	id 'org.springframework.boot' version '2.3.2.RELEASE'
-	id 'io.spring.dependency-management' version '1.0.8.RELEASE'
+	id 'org.springframework.boot' version '2.4.2'
+	id 'io.spring.dependency-management' version '1.0.11.RELEASE'
 	id 'java'
 }
 
 group = 'com.example'
 version = '0.0.1-SNAPSHOT'
-sourceCompatibility = '1.8'
+sourceCompatibility = '11'
 
 repositories {
 	mavenCentral()
@@ -14,9 +14,7 @@ repositories {
 
 dependencies {
 	implementation 'org.springframework.boot:spring-boot-starter-websocket'
-	testImplementation('org.springframework.boot:spring-boot-starter-test') {
-		exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
-	}
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 }
 
 test {

initial/pom.xml

@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.3.2.RELEASE</version>
+		<version>2.4.2</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.example</groupId>
@@ -13,11 +13,9 @@
 	<version>0.0.1-SNAPSHOT</version>
 	<name>messaging-stomp-websocket</name>
 	<description>Demo project for Spring Boot</description>
-
 	<properties>
-		<java.version>1.8</java.version>
+		<java.version>11</java.version>
 	</properties>
-
 	<dependencies>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -28,12 +26,6 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-test</artifactId>
 			<scope>test</scope>
-			<exclusions>
-				<exclusion>
-					<groupId>org.junit.vintage</groupId>
-					<artifactId>junit-vintage-engine</artifactId>
-				</exclusion>
-			</exclusions>
 		</dependency>
 	</dependencies>