Maven + Quarkus Hello World example

By mkyong | Updated: January 27, 2021

Viewed: 5,634 (+28 pv/w)

This article shows how to use the quarkus-maven-plugin to create or scaffold a Maven + Quarkus JAX-RS hello world project.

Technologies used:

Quarkus 1.11.0
Maven 3.6.3
Java 11

Topics

Creating a new Maven + Quartus project
Maven + Quarkus Project Structure
Quarkus and pom.xml
Quarkus Dependencies
Quarkus JAX-RX endpoint
Quarkus and Dockerfile
Run Quarkus in Dev Mode
Download Source Code
References

1. Creating a new Maven + Quartus project

We can use the quarkus-maven-plugin to create a Quarkus JAX-RS project.

1.1 For Linux and macOS system.

Terminal


mvn io.quarkus:quarkus-maven-plugin:1.11.0.Final:create \
    -DprojectGroupId=com.mkyong \
    -DprojectArtifactId=quarkus-hello-world-maven \
    -DclassName="com.mkyong.quarkus.HelloResource" \
    -Dpath="/hello"

1.2 For Windows, cmd or command prompt, replace the new line \ with a ^.

Terminal


mvn io.quarkus:quarkus-maven-plugin:1.11.0.Final:create ^
    -DprojectGroupId=com.mkyong ^
    -DprojectArtifactId=quarkus-hello-world-maven ^
    -DclassName="com.mkyong.quarkus.HelloResource" ^
    -Dpath="/hello"

Output

Terminal


-----------
[INFO]
[INFO] ========================================================================================
[INFO] Your new application has been created in C:\Users\mkyong\projects\quarkus\quarkus-hello-world-maven
[INFO] Navigate into this directory and launch your application with mvn quarkus:dev
[INFO] Your application will be accessible on http://localhost:8080
[INFO] ========================================================================================
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  2.774 s
[INFO] Finished at: 2021-01-26T13:25:14+08:00
[INFO] ------------------------------------------------------------------------

2. Maven + Quarkus Project Structure

The above command created a new project named quarkus-hello-world-maven, and generates the following files and directories:

Standard Maven directory structure.
Maven pom.xml and related wrapper.
HelloResource.java for /hello endpoint.
Unit Tests.
A landing page resources\META-INF\resources\index.html for http://localhost:8080
Dockerfile files, for jvm or native mode.
The application configuration file, application.properties.

Terminal


> cd quarkus-hello-world-maven

C:\Users\mkyong\projects\quarkus\quarkus-hello-world-maven> tree /F
Folder PATH listing
Volume serial number is A446-18E6
C:.
│   .dockerignore
│   .gitignore
│   mvnw
│   mvnw.cmd
│   pom.xml
│   README.md
│
├───.idea
│       misc.xml
│       vcs.xml
│       workspace.xml
│
├───.mvn
│   └───wrapper
│           maven-wrapper.properties
│           MavenWrapperDownloader.java
│
└───src
  ├───main
  │   ├───docker
  │   │       Dockerfile.fast-jar
  │   │       Dockerfile.jvm
  │   │       Dockerfile.native
  │   │
  │   ├───java
  │   │   └───com
  │   │       └───mkyong
  │   │           └───quarkus
  │   │                   HelloResource.java
  │   │
  │   └───resources
  │       │   application.properties
  │       │
  │       └───META-INF
  │           └───resources
  │                   index.html
  │
  └───test
      └───java
          └───com
              └───mkyong
                  └───quarkus
                          HelloResourceTest.java
                          NativeHelloResourceIT.java

3. Quarkus and pom.xml

Review the generated pom.xml file.

3.1 The Quarkus JAX-RS project required only two dependencies: quarkus-arc and quarkus-resteasy. (The transitive dependencies are huge, read below for full Quarkus dependencies).

pom.xml


<dependencies>
  <dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-arc</artifactId>
  </dependency>
  <dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-resteasy</artifactId>
  </dependency>
</dependencies>

The Quarkus uses JUnit 5 and REST-assured for unit tests.

pom.xml


<dependencies>
  <dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-junit5</artifactId>
    <scope>test</scope>
  </dependency>
  <dependency>
    <groupId>io.rest-assured</groupId>
    <artifactId>rest-assured</artifactId>
    <scope>test</scope>
  </dependency>
</dependencies>

A complete pom.xml.

pom.xml


<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
https://maven.apache.org/xsd/maven-4.0.0.xsd"
xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.mkyong</groupId>
  <artifactId>quarkus-hello-world-maven</artifactId>
  <version>1.0.0-SNAPSHOT</version>
  <properties>
    <surefire-plugin.version>2.22.1</surefire-plugin.version>
    <maven.compiler.target>11</maven.compiler.target>
    <quarkus.platform.version>1.11.0.Final</quarkus.platform.version>
    <maven.compiler.source>11</maven.compiler.source>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <quarkus.platform.artifact-id>quarkus-universe-bom</quarkus.platform.artifact-id>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <maven.compiler.parameters>true</maven.compiler.parameters>
    <quarkus-plugin.version>1.11.0.Final</quarkus-plugin.version>
    <compiler-plugin.version>3.8.1</compiler-plugin.version>
    <quarkus.platform.group-id>io.quarkus</quarkus.platform.group-id>
  </properties>
  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>${quarkus.platform.group-id}</groupId>
        <artifactId>${quarkus.platform.artifact-id}</artifactId>
        <version>${quarkus.platform.version}</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>
    </dependencies>
  </dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>io.quarkus</groupId>
      <artifactId>quarkus-arc</artifactId>
    </dependency>
    <dependency>
      <groupId>io.quarkus</groupId>
      <artifactId>quarkus-resteasy</artifactId>
    </dependency>
    <dependency>
      <groupId>io.quarkus</groupId>
      <artifactId>quarkus-junit5</artifactId>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>io.rest-assured</groupId>
      <artifactId>rest-assured</artifactId>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <groupId>io.quarkus</groupId>
        <artifactId>quarkus-maven-plugin</artifactId>
        <version>${quarkus-plugin.version}</version>
        <extensions>true</extensions>
        <executions>
          <execution>
            <goals>
              <goal>build</goal>
              <goal>generate-code</goal>
              <goal>generate-code-tests</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>${compiler-plugin.version}</version>
      </plugin>
      <plugin>
        <artifactId>maven-surefire-plugin</artifactId>
        <version>${surefire-plugin.version}</version>
        <configuration>
          <systemPropertyVariables>
            <java.util.logging.manager>org.jboss.logmanager.LogManager</java.util.logging.manager>
            <maven.home>${maven.home}</maven.home>
          </systemPropertyVariables>
        </configuration>
      </plugin>
    </plugins>
  </build>
  <profiles>
    <profile>
      <id>native</id>
      <activation>
        <property>
          <name>native</name>
        </property>
      </activation>
      <build>
        <plugins>
          <plugin>
            <artifactId>maven-failsafe-plugin</artifactId>
            <version>${surefire-plugin.version}</version>
            <executions>
              <execution>
                <goals>
                  <goal>integration-test</goal>
                  <goal>verify</goal>
                </goals>
                <configuration>
                  <systemPropertyVariables>
                    <native.image.path>${project.build.directory}/${project.build.finalName}-runner</native.image.path>
                    <java.util.logging.manager>org.jboss.logmanager.LogManager</java.util.logging.manager>
                    <maven.home>${maven.home}</maven.home>
                  </systemPropertyVariables>
                </configuration>
              </execution>
            </executions>
          </plugin>
        </plugins>
      </build>
      <properties>
        <quarkus.package.type>native</quarkus.package.type>
      </properties>
    </profile>
  </profiles>
</project>

4. Quarkus Dependencies

4.1 Review the full project dependencies for a default Quarkus JAX-RS project.

The Quarkus core Technologies:

Quarkus uses Vert.x and Netty at its core, providing reactive and non-blocking HTTP layer.
Quarkus uses RESTEasy for the JAX-RS endpoint.
Quarkus uses ArC as the dependency injection solution, which is based on the Contexts and Dependency Injection for Java 2.0 specification. The ArC is a subset of the CDI tailored for Quarkus’ architecture.
Quarkus uses JBoss Log Manager as the default logging framework.
Quartus uses a modified version of Undertow (Servlet/Websocket engine) that runs on top of Vert.x
Quarkus uses SmallRye Config, implementation of Eclipse MicroProfile Config, for configuration data.

For testing:

Quarkus uses JUnit 5 for testing.
Quarkus uses rest-assured to test HTTP endpoints.

4.2 Project dependencies view on IntelliJ IDEA.

4.3 Maven command dependency:tree to review the full project dependencies (a long list) in text format.

Terminal


C:\Users\mkyong\projects\quarkus\quarkus-hello-world-maven>mvn dependency:tree
[INFO] Scanning for projects...
[INFO]
[INFO] ----------------< com.mkyong:quarkus-hello-world-maven >----------------
[INFO] Building quarkus-hello-world-maven 1.0.0-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ quarkus-hello-world-maven ---
[INFO] com.mkyong:quarkus-hello-world-maven:jar:1.0.0-SNAPSHOT
[INFO] +- io.quarkus:quarkus-arc:jar:1.11.0.Final:compile
[INFO] |  +- io.quarkus.arc:arc:jar:1.11.0.Final:compile
[INFO] |  |  +- jakarta.enterprise:jakarta.enterprise.cdi-api:jar:2.0.2:compile
[INFO] |  |  |  +- jakarta.el:jakarta.el-api:jar:3.0.3:compile
[INFO] |  |  |  \- jakarta.interceptor:jakarta.interceptor-api:jar:1.2.5:compile
[INFO] |  |  +- jakarta.annotation:jakarta.annotation-api:jar:1.3.5:compile
[INFO] |  |  +- jakarta.transaction:jakarta.transaction-api:jar:1.3.3:compile
[INFO] |  |  \- org.jboss.logging:jboss-logging:jar:3.4.1.Final:compile
[INFO] |  +- io.quarkus:quarkus-core:jar:1.11.0.Final:compile
[INFO] |  |  +- jakarta.inject:jakarta.inject-api:jar:1.0:compile
[INFO] |  |  +- io.quarkus:quarkus-ide-launcher:jar:1.11.0.Final:compile
[INFO] |  |  +- io.quarkus:quarkus-development-mode-spi:jar:1.11.0.Final:compile
[INFO] |  |  +- io.smallrye.config:smallrye-config:jar:1.10.0:compile
[INFO] |  |  |  +- io.smallrye.common:smallrye-common-annotation:jar:1.5.0:compile
[INFO] |  |  |  +- io.smallrye.config:smallrye-config-common:jar:1.10.0:compile
[INFO] |  |  |  |  \- org.eclipse.microprofile.config:microprofile-config-api:jar:1.4:compile
[INFO] |  |  |  +- io.smallrye.common:smallrye-common-expression:jar:1.5.0:compile
[INFO] |  |  |  |  \- io.smallrye.common:smallrye-common-function:jar:1.5.0:compile
[INFO] |  |  |  +- io.smallrye.common:smallrye-common-constraint:jar:1.5.0:compile
[INFO] |  |  |  \- io.smallrye.common:smallrye-common-classloader:jar:1.5.0:compile
[INFO] |  |  +- org.jboss.logmanager:jboss-logmanager-embedded:jar:1.0.6:compile
[INFO] |  |  +- org.jboss.logging:jboss-logging-annotations:jar:2.2.0.Final:compile
[INFO] |  |  +- org.jboss.threads:jboss-threads:jar:3.2.0.Final:compile
[INFO] |  |  +- org.slf4j:slf4j-api:jar:1.7.30:compile
[INFO] |  |  +- org.jboss.slf4j:slf4j-jboss-logmanager:jar:1.1.0.Final:compile
[INFO] |  |  +- org.graalvm.sdk:graal-sdk:jar:20.3.0:compile
[INFO] |  |  +- org.wildfly.common:wildfly-common:jar:1.5.4.Final-format-001:compile
[INFO] |  |  \- io.quarkus:quarkus-bootstrap-runner:jar:1.11.0.Final:compile
[INFO] |  \- org.eclipse.microprofile.context-propagation:microprofile-context-propagation-api:jar:1.0.1:compile
[INFO] +- io.quarkus:quarkus-resteasy:jar:1.11.0.Final:compile
[INFO] |  +- io.quarkus:quarkus-vertx-http:jar:1.11.0.Final:compile
[INFO] |  |  +- io.quarkus:quarkus-security-runtime-spi:jar:1.11.0.Final:compile
[INFO] |  |  +- io.quarkus:quarkus-vertx-http-dev-console-runtime-spi:jar:1.11.0.Final:compile
[INFO] |  |  +- io.quarkus.security:quarkus-security:jar:1.1.3.Final:compile
[INFO] |  |  |  \- io.smallrye.reactive:mutiny:jar:0.12.5:compile
[INFO] |  |  |     \- org.reactivestreams:reactive-streams:jar:1.0.3:compile
[INFO] |  |  +- io.quarkus:quarkus-vertx-core:jar:1.11.0.Final:compile
[INFO] |  |  |  +- io.quarkus:quarkus-netty:jar:1.11.0.Final:compile
[INFO] |  |  |  |  +- io.netty:netty-codec:jar:4.1.49.Final:compile
[INFO] |  |  |  |  \- io.netty:netty-handler:jar:4.1.49.Final:compile
[INFO] |  |  |  \- io.vertx:vertx-core:jar:3.9.5:compile
[INFO] |  |  |     +- io.netty:netty-common:jar:4.1.49.Final:compile
[INFO] |  |  |     +- io.netty:netty-buffer:jar:4.1.49.Final:compile
[INFO] |  |  |     +- io.netty:netty-transport:jar:4.1.49.Final:compile
[INFO] |  |  |     +- io.netty:netty-handler-proxy:jar:4.1.49.Final:compile
[INFO] |  |  |     |  \- io.netty:netty-codec-socks:jar:4.1.49.Final:compile
[INFO] |  |  |     +- io.netty:netty-codec-http:jar:4.1.49.Final:compile
[INFO] |  |  |     +- io.netty:netty-codec-http2:jar:4.1.49.Final:compile
[INFO] |  |  |     +- io.netty:netty-resolver:jar:4.1.49.Final:compile
[INFO] |  |  |     +- io.netty:netty-resolver-dns:jar:4.1.49.Final:compile
[INFO] |  |  |     |  \- io.netty:netty-codec-dns:jar:4.1.49.Final:compile
[INFO] |  |  |     \- com.fasterxml.jackson.core:jackson-core:jar:2.11.3:compile
[INFO] |  |  \- io.vertx:vertx-web:jar:3.9.5:compile
[INFO] |  |     +- io.vertx:vertx-web-common:jar:3.9.5:compile
[INFO] |  |     +- io.vertx:vertx-auth-common:jar:3.9.5:compile
[INFO] |  |     \- io.vertx:vertx-bridge-common:jar:3.9.5:compile
[INFO] |  \- io.quarkus:quarkus-resteasy-server-common:jar:1.11.0.Final:compile
[INFO] |     +- io.quarkus:quarkus-resteasy-common:jar:1.11.0.Final:compile
[INFO] |     |  +- org.jboss.resteasy:resteasy-core:jar:4.5.8.SP1:compile
[INFO] |     |  |  +- org.jboss.spec.javax.ws.rs:jboss-jaxrs-api_2.1_spec:jar:2.0.1.Final:compile
[INFO] |     |  |  +- org.jboss.spec.javax.xml.bind:jboss-jaxb-api_2.3_spec:jar:2.0.0.Final:compile
[INFO] |     |  |  +- org.jboss.resteasy:resteasy-core-spi:jar:4.5.8.SP1:compile
[INFO] |     |  |  \- com.ibm.async:asyncutil:jar:0.1.0:compile
[INFO] |     |  \- com.sun.activation:jakarta.activation:jar:1.2.1:compile
[INFO] |     \- jakarta.validation:jakarta.validation-api:jar:2.0.2:compile
[INFO] +- io.quarkus:quarkus-junit5:jar:1.11.0.Final:test
[INFO] |  +- io.quarkus:quarkus-bootstrap-core:jar:1.11.0.Final:test
[INFO] |  |  +- io.quarkus:quarkus-bootstrap-app-model:jar:1.11.0.Final:test
[INFO] |  |  +- io.quarkus:quarkus-bootstrap-maven-resolver:jar:1.11.0.Final:test
[INFO] |  |  |  +- org.apache.maven:maven-embedder:jar:3.6.3:test
[INFO] |  |  |  |  +- org.apache.maven:maven-settings:jar:3.6.3:test
[INFO] |  |  |  |  +- org.apache.maven:maven-core:jar:3.6.3:test
[INFO] |  |  |  |  |  +- org.apache.maven:maven-artifact:jar:3.6.3:test
[INFO] |  |  |  |  |  \- org.codehaus.plexus:plexus-component-annotations:jar:2.1.0:test
[INFO] |  |  |  |  +- org.apache.maven:maven-plugin-api:jar:3.6.3:test
[INFO] |  |  |  |  +- org.apache.maven:maven-model:jar:3.6.3:test
[INFO] |  |  |  |  +- org.apache.maven:maven-model-builder:jar:3.6.3:test
[INFO] |  |  |  |  +- org.apache.maven:maven-builder-support:jar:3.6.3:test
[INFO] |  |  |  |  +- org.apache.maven.resolver:maven-resolver-api:jar:1.4.1:test
[INFO] |  |  |  |  +- org.apache.maven.resolver:maven-resolver-util:jar:1.4.1:test
[INFO] |  |  |  |  +- org.apache.maven.shared:maven-shared-utils:jar:3.2.1:test
[INFO] |  |  |  |  |  \- commons-io:commons-io:jar:2.8.0:test
[INFO] |  |  |  |  +- com.google.inject:guice:jar:no_aop:4.2.1:test
[INFO] |  |  |  |  |  \- com.google.guava:guava:jar:30.1-jre:test
[INFO] |  |  |  |  |     +- com.google.guava:failureaccess:jar:1.0.1:test
[INFO] |  |  |  |  |     \- com.google.guava:listenablefuture:jar:9999.0-empty-to-avoid-conflict-with-guava:test
[INFO] |  |  |  |  +- org.codehaus.plexus:plexus-utils:jar:3.2.1:test
[INFO] |  |  |  |  +- org.codehaus.plexus:plexus-classworlds:jar:2.6.0:test
[INFO] |  |  |  |  \- commons-cli:commons-cli:jar:1.4:test
[INFO] |  |  |  +- org.eclipse.sisu:org.eclipse.sisu.plexus:jar:0.3.4:test
[INFO] |  |  |  +- org.apache.maven:maven-settings-builder:jar:3.6.3:test
[INFO] |  |  |  |  +- org.codehaus.plexus:plexus-interpolation:jar:1.25:test
[INFO] |  |  |  |  \- org.sonatype.plexus:plexus-sec-dispatcher:jar:1.4:test
[INFO] |  |  |  |     \- org.sonatype.plexus:plexus-cipher:jar:1.4:test
[INFO] |  |  |  +- org.apache.maven:maven-resolver-provider:jar:3.6.3:test
[INFO] |  |  |  |  +- org.apache.maven:maven-repository-metadata:jar:3.6.3:test
[INFO] |  |  |  |  +- org.apache.maven.resolver:maven-resolver-spi:jar:1.4.1:test
[INFO] |  |  |  |  \- org.apache.maven.resolver:maven-resolver-impl:jar:1.4.1:test
[INFO] |  |  |  +- org.apache.maven.resolver:maven-resolver-connector-basic:jar:1.4.1:test
[INFO] |  |  |  +- org.apache.maven.resolver:maven-resolver-transport-wagon:jar:1.4.1:test
[INFO] |  |  |  +- org.apache.maven.wagon:wagon-http:jar:3.3.4:test
[INFO] |  |  |  |  +- org.apache.maven.wagon:wagon-http-shared:jar:3.3.4:test
[INFO] |  |  |  |  |  \- org.jsoup:jsoup:jar:1.12.1:test
[INFO] |  |  |  |  \- org.apache.maven.wagon:wagon-provider-api:jar:3.3.4:test
[INFO] |  |  |  \- org.apache.maven.wagon:wagon-file:jar:3.3.4:test
[INFO] |  |  +- io.quarkus:quarkus-bootstrap-gradle-resolver:jar:1.11.0.Final:test
[INFO] |  |  \- io.smallrye.common:smallrye-common-io:jar:1.5.0:compile
[INFO] |  +- org.eclipse.sisu:org.eclipse.sisu.inject:jar:0.3.4:test
[INFO] |  +- io.quarkus:quarkus-test-common:jar:1.11.0.Final:test
[INFO] |  |  +- io.quarkus:quarkus-core-deployment:jar:1.11.0.Final:test
[INFO] |  |  |  +- io.quarkus.gizmo:gizmo:jar:1.0.6.Final:test
[INFO] |  |  |  |  \- org.ow2.asm:asm-util:jar:9.0:test
[INFO] |  |  |  |     +- org.ow2.asm:asm-tree:jar:9.0:test
[INFO] |  |  |  |     \- org.ow2.asm:asm-analysis:jar:9.0:test
[INFO] |  |  |  +- org.ow2.asm:asm:jar:9.0:test
[INFO] |  |  |  +- io.quarkus:quarkus-class-change-agent:jar:1.11.0.Final:test
[INFO] |  |  |  +- io.quarkus:quarkus-devtools-utilities:jar:1.11.0.Final:test
[INFO] |  |  |  \- io.quarkus:quarkus-builder:jar:1.11.0.Final:test
[INFO] |  |  +- io.quarkus:quarkus-jsonp-deployment:jar:1.11.0.Final:test
[INFO] |  |  |  \- io.quarkus:quarkus-jsonp:jar:1.11.0.Final:test
[INFO] |  |  |     \- org.glassfish:jakarta.json:jar:1.1.6:test
[INFO] |  |  +- org.jboss:jandex:jar:2.2.2.Final:test
[INFO] |  |  \- org.jboss.logging:commons-logging-jboss-logging:jar:1.0.0.Final:test
[INFO] |  +- org.junit.jupiter:junit-jupiter:jar:5.7.0:test
[INFO] |  |  +- org.junit.jupiter:junit-jupiter-api:jar:5.7.0:test
[INFO] |  |  |  +- org.apiguardian:apiguardian-api:jar:1.1.0:test
[INFO] |  |  |  +- org.opentest4j:opentest4j:jar:1.2.0:test
[INFO] |  |  |  \- org.junit.platform:junit-platform-commons:jar:1.7.0:test
[INFO] |  |  +- org.junit.jupiter:junit-jupiter-params:jar:5.7.0:test
[INFO] |  |  \- org.junit.jupiter:junit-jupiter-engine:jar:5.7.0:test
[INFO] |  |     \- org.junit.platform:junit-platform-engine:jar:1.7.0:test
[INFO] |  \- com.thoughtworks.xstream:xstream:jar:1.4.14:test
[INFO] |     +- xmlpull:xmlpull:jar:1.1.3.1:test
[INFO] |     \- xpp3:xpp3_min:jar:1.1.4c:test
[INFO] \- io.rest-assured:rest-assured:jar:4.3.3:test
[INFO]    +- org.codehaus.groovy:groovy:jar:3.0.5:test
[INFO]    +- org.codehaus.groovy:groovy-xml:jar:3.0.7:test
[INFO]    +- org.apache.httpcomponents:httpclient:jar:4.5.13:test
[INFO]    |  +- org.apache.httpcomponents:httpcore:jar:4.4.14:test
[INFO]    |  \- commons-codec:commons-codec:jar:1.14:test
[INFO]    +- org.apache.httpcomponents:httpmime:jar:4.5.13:test
[INFO]    +- org.hamcrest:hamcrest:jar:2.1:test
[INFO]    +- org.ccil.cowan.tagsoup:tagsoup:jar:1.2.1:test
[INFO]    +- io.rest-assured:json-path:jar:4.3.3:test
[INFO]    |  +- org.codehaus.groovy:groovy-json:jar:3.0.5:test
[INFO]    |  \- io.rest-assured:rest-assured-common:jar:4.3.3:test
[INFO]    \- io.rest-assured:xml-path:jar:4.3.3:test
[INFO]       +- org.apache.commons:commons-lang3:jar:3.9:test
[INFO]       +- jakarta.xml.bind:jakarta.xml.bind-api:jar:2.3.3:test
[INFO]       |  \- jakarta.activation:jakarta.activation-api:jar:1.2.1:test
[INFO]       \- com.sun.xml.bind:jaxb-impl:jar:2.3.3:test
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  6.412 s
[INFO] Finished at: 2021-01-26T15:02:09+08:00
[INFO] ------------------------------------------------------------------------

4.4 The above mvn dependency:tree display the entire compile, runtime and test dependencies of the application. However, we can use the Maven plugin quarkus-bootstrap-maven-plugin to display only the runtime dependencies of the Quarkus application.

Put this in pom.xml

pom.xml


  <plugin>
      <groupId>io.quarkus</groupId>
      <artifactId>quarkus-bootstrap-maven-plugin</artifactId>
      <version>${quarkus-plugin.version}</version>
  </plugin>

In terminal, type mvnw quarkus-bootstrap:build-tree to display the runtime dependencies.

Terminal


> mvnw quarkus-bootstrap:build-tree
[INFO] Scanning for projects...
[INFO]
[INFO] ----------------< com.mkyong:quarkus-hello-world-maven >----------------
[INFO] Building quarkus-hello-world-maven 1.0.0-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- quarkus-bootstrap-maven-plugin:1.11.0.Final:build-tree (default-cli) @ quarkus-hello-world-maven ---
[INFO] com.mkyong:quarkus-hello-world-maven:pom:1.0.0-SNAPSHOT
[INFO] ├─ io.quarkus:quarkus-arc-deployment:jar:1.11.0.Final (compile)
[INFO] │  ├─ io.quarkus:quarkus-core-deployment:jar:1.11.0.Final (compile)
[INFO] │  │  ├─ org.wildfly.common:wildfly-common:jar:1.5.4.Final-format-001 (compile)
[INFO] │  │  ├─ io.quarkus.gizmo:gizmo:jar:1.0.6.Final (compile)
[INFO] │  │  │  └─ org.ow2.asm:asm-util:jar:9.0 (compile)
[INFO] │  │  │     ├─ org.ow2.asm:asm-tree:jar:9.0 (compile)
[INFO] │  │  │     └─ org.ow2.asm:asm-analysis:jar:9.0 (compile)
[INFO] │  │  ├─ org.jboss:jandex:jar:2.2.2.Final (compile)
[INFO] │  │  ├─ org.ow2.asm:asm:jar:9.0 (compile)
[INFO] │  │  ├─ io.quarkus:quarkus-development-mode-spi:jar:1.11.0.Final (compile)
[INFO] │  │  ├─ io.quarkus:quarkus-class-change-agent:jar:1.11.0.Final (compile)
[INFO] │  │  ├─ io.quarkus:quarkus-bootstrap-core:jar:1.11.0.Final (compile)
[INFO] │  │  │  ├─ io.quarkus:quarkus-bootstrap-app-model:jar:1.11.0.Final (compile)
[INFO] │  │  │  │  └─ org.jboss.logging:commons-logging-jboss-logging:jar:1.0.0.Final (runtime)
[INFO] │  │  │  ├─ io.quarkus:quarkus-bootstrap-maven-resolver:jar:1.11.0.Final (compile)
[INFO] │  │  │  │  ├─ org.apache.maven:maven-embedder:jar:3.6.3 (compile)
[INFO] │  │  │  │  │  ├─ org.apache.maven:maven-settings:jar:3.6.3 (compile)
[INFO] │  │  │  │  │  ├─ org.apache.maven:maven-core:jar:3.6.3 (compile)
[INFO] │  │  │  │  │  │  ├─ org.apache.maven:maven-artifact:jar:3.6.3 (compile)
[INFO] │  │  │  │  │  │  └─ org.codehaus.plexus:plexus-component-annotations:jar:2.1.0 (compile)
[INFO] │  │  │  │  │  ├─ org.apache.maven:maven-plugin-api:jar:3.6.3 (compile)
[INFO] │  │  │  │  │  ├─ org.apache.maven:maven-model:jar:3.6.3 (compile)
[INFO] │  │  │  │  │  ├─ org.apache.maven:maven-model-builder:jar:3.6.3 (compile)
[INFO] │  │  │  │  │  ├─ org.apache.maven:maven-builder-support:jar:3.6.3 (compile)
[INFO] │  │  │  │  │  ├─ org.apache.maven.resolver:maven-resolver-api:jar:1.4.1 (compile)
[INFO] │  │  │  │  │  ├─ org.apache.maven.resolver:maven-resolver-util:jar:1.4.1 (compile)
[INFO] │  │  │  │  │  ├─ org.apache.maven.shared:maven-shared-utils:jar:3.2.1 (compile)
[INFO] │  │  │  │  │  │  └─ commons-io:commons-io:jar:2.8.0 (compile)
[INFO] │  │  │  │  │  ├─ com.google.inject:guice:jar:no_aop:4.2.1 (compile)
[INFO] │  │  │  │  │  │  └─ com.google.guava:guava:jar:30.1-jre (compile)
[INFO] │  │  │  │  │  │     ├─ com.google.guava:failureaccess:jar:1.0.1 (compile)
[INFO] │  │  │  │  │  │     └─ com.google.guava:listenablefuture:jar:9999.0-empty-to-avoid-conflict-with-guava (compile)
[INFO] │  │  │  │  │  ├─ org.codehaus.plexus:plexus-utils:jar:3.2.1 (compile)
[INFO] │  │  │  │  │  ├─ org.codehaus.plexus:plexus-classworlds:jar:2.6.0 (compile)
[INFO] │  │  │  │  │  ├─ commons-cli:commons-cli:jar:1.4 (compile)
[INFO] │  │  │  │  │  └─ org.apache.commons:commons-lang3:jar:3.9 (compile)
[INFO] │  │  │  │  ├─ org.eclipse.sisu:org.eclipse.sisu.plexus:jar:0.3.4 (compile)
[INFO] │  │  │  │  ├─ org.apache.maven:maven-settings-builder:jar:3.6.3 (compile)
[INFO] │  │  │  │  │  ├─ org.codehaus.plexus:plexus-interpolation:jar:1.25 (compile)
[INFO] │  │  │  │  │  └─ org.sonatype.plexus:plexus-sec-dispatcher:jar:1.4 (compile)
[INFO] │  │  │  │  │     └─ org.sonatype.plexus:plexus-cipher:jar:1.4 (compile)
[INFO] │  │  │  │  ├─ org.apache.maven:maven-resolver-provider:jar:3.6.3 (compile)
[INFO] │  │  │  │  │  ├─ org.apache.maven:maven-repository-metadata:jar:3.6.3 (compile)
[INFO] │  │  │  │  │  ├─ org.apache.maven.resolver:maven-resolver-spi:jar:1.4.1 (compile)
[INFO] │  │  │  │  │  └─ org.apache.maven.resolver:maven-resolver-impl:jar:1.4.1 (compile)
[INFO] │  │  │  │  ├─ org.apache.maven.resolver:maven-resolver-connector-basic:jar:1.4.1 (compile)
[INFO] │  │  │  │  ├─ org.apache.maven.resolver:maven-resolver-transport-wagon:jar:1.4.1 (compile)
[INFO] │  │  │  │  ├─ org.apache.maven.wagon:wagon-http:jar:3.3.4 (compile)
[INFO] │  │  │  │  │  ├─ org.apache.maven.wagon:wagon-http-shared:jar:3.3.4 (compile)
[INFO] │  │  │  │  │  │  └─ org.jsoup:jsoup:jar:1.11.3 (compile)
[INFO] │  │  │  │  │  ├─ org.apache.httpcomponents:httpclient:jar:4.5.13 (compile)
[INFO] │  │  │  │  │  │  └─ commons-codec:commons-codec:jar:1.14 (compile)
[INFO] │  │  │  │  │  ├─ org.apache.httpcomponents:httpcore:jar:4.4.14 (compile)
[INFO] │  │  │  │  │  └─ org.apache.maven.wagon:wagon-provider-api:jar:3.3.3 (compile)
[INFO] │  │  │  │  └─ org.apache.maven.wagon:wagon-file:jar:3.3.4 (compile)
[INFO] │  │  │  ├─ io.quarkus:quarkus-bootstrap-gradle-resolver:jar:1.11.0.Final (compile)
[INFO] │  │  │  └─ io.smallrye.common:smallrye-common-io:jar:1.5.0 (compile)
[INFO] │  │  ├─ io.quarkus:quarkus-devtools-utilities:jar:1.11.0.Final (compile)
[INFO] │  │  ├─ org.eclipse.sisu:org.eclipse.sisu.inject:jar:0.3.4 (runtime)
[INFO] │  │  ├─ io.quarkus:quarkus-core:jar:1.11.0.Final (compile)
[INFO] │  │  │  ├─ jakarta.inject:jakarta.inject-api:jar:1.0 (compile)
[INFO] │  │  │  ├─ io.quarkus:quarkus-ide-launcher:jar:1.11.0.Final (compile)
[INFO] │  │  │  ├─ io.smallrye.config:smallrye-config:jar:1.10.0 (compile)
[INFO] │  │  │  │  ├─ io.smallrye.common:smallrye-common-annotation:jar:1.5.0 (compile)
[INFO] │  │  │  │  ├─ io.smallrye.config:smallrye-config-common:jar:1.10.0 (compile)
[INFO] │  │  │  │  │  └─ org.eclipse.microprofile.config:microprofile-config-api:jar:1.4 (compile)
[INFO] │  │  │  │  ├─ io.smallrye.common:smallrye-common-expression:jar:1.5.0 (compile)
[INFO] │  │  │  │  │  └─ io.smallrye.common:smallrye-common-function:jar:1.5.0 (compile)
[INFO] │  │  │  │  ├─ io.smallrye.common:smallrye-common-constraint:jar:1.5.0 (compile)
[INFO] │  │  │  │  └─ io.smallrye.common:smallrye-common-classloader:jar:1.5.0 (compile)
[INFO] │  │  │  ├─ org.jboss.logmanager:jboss-logmanager-embedded:jar:1.0.6 (compile)
[INFO] │  │  │  ├─ org.jboss.logging:jboss-logging-annotations:jar:2.2.0.Final (compile)
[INFO] │  │  │  ├─ org.jboss.threads:jboss-threads:jar:3.2.0.Final (compile)
[INFO] │  │  │  ├─ org.slf4j:slf4j-api:jar:1.7.30 (compile)
[INFO] │  │  │  ├─ org.jboss.slf4j:slf4j-jboss-logmanager:jar:1.1.0.Final (compile)
[INFO] │  │  │  └─ io.quarkus:quarkus-bootstrap-runner:jar:1.11.0.Final (compile)
[INFO] │  │  ├─ io.quarkus:quarkus-builder:jar:1.11.0.Final (compile)
[INFO] │  │  └─ org.graalvm.sdk:graal-sdk:jar:20.3.0 (compile)
[INFO] │  ├─ io.quarkus:quarkus-vertx-http-dev-console-spi:jar:1.11.0.Final (compile)
[INFO] │  │  ├─ io.quarkus:quarkus-vertx-http-dev-console-runtime-spi:jar:1.11.0.Final (compile)
[INFO] │  │  ├─ io.quarkus.arc:arc:jar:1.11.0.Final (compile)
[INFO] │  │  │  └─ jakarta.transaction:jakarta.transaction-api:jar:1.3.3 (compile)
[INFO] │  │  └─ io.vertx:vertx-web:jar:3.9.5 (compile)
[INFO] │  │     ├─ io.vertx:vertx-web-common:jar:3.9.5 (compile)
[INFO] │  │     ├─ io.vertx:vertx-auth-common:jar:3.9.5 (compile)
[INFO] │  │     ├─ io.vertx:vertx-bridge-common:jar:3.9.5 (compile)
[INFO] │  │     └─ io.vertx:vertx-core:jar:3.9.5 (compile)
[INFO] │  │        ├─ io.netty:netty-common:jar:4.1.49.Final (compile)
[INFO] │  │        ├─ io.netty:netty-buffer:jar:4.1.49.Final (compile)
[INFO] │  │        ├─ io.netty:netty-transport:jar:4.1.49.Final (compile)
[INFO] │  │        ├─ io.netty:netty-handler:jar:4.1.49.Final (compile)
[INFO] │  │        │  └─ io.netty:netty-codec:jar:4.1.49.Final (compile)
[INFO] │  │        ├─ io.netty:netty-handler-proxy:jar:4.1.49.Final (compile)
[INFO] │  │        │  └─ io.netty:netty-codec-socks:jar:4.1.49.Final (compile)
[INFO] │  │        ├─ io.netty:netty-codec-http:jar:4.1.49.Final (compile)
[INFO] │  │        ├─ io.netty:netty-codec-http2:jar:4.1.49.Final (compile)
[INFO] │  │        ├─ io.netty:netty-resolver:jar:4.1.49.Final (compile)
[INFO] │  │        ├─ io.netty:netty-resolver-dns:jar:4.1.49.Final (compile)
[INFO] │  │        │  └─ io.netty:netty-codec-dns:jar:4.1.49.Final (compile)
[INFO] │  │        ├─ com.fasterxml.jackson.core:jackson-core:jar:2.11.3 (compile)
[INFO] │  │        └─ com.fasterxml.jackson.core:jackson-databind:jar:2.11.3 (compile)
[INFO] │  │           └─ com.fasterxml.jackson.core:jackson-annotations:jar:2.11.3 (compile)
[INFO] │  ├─ io.quarkus:quarkus-arc:jar:1.11.0.Final (compile)
[INFO] │  │  └─ org.eclipse.microprofile.context-propagation:microprofile-context-propagation-api:jar:1.0.1 (compile)
[INFO] │  └─ io.quarkus.arc:arc-processor:jar:1.11.0.Final (compile)
[INFO] │     ├─ jakarta.enterprise:jakarta.enterprise.cdi-api:jar:2.0.2 (compile)
[INFO] │     │  ├─ jakarta.el:jakarta.el-api:jar:3.0.3 (compile)
[INFO] │     │  └─ jakarta.interceptor:jakarta.interceptor-api:jar:1.2.5 (compile)
[INFO] │     ├─ org.jboss.logging:jboss-logging:jar:3.4.1.Final (compile)
[INFO] │     └─ jakarta.annotation:jakarta.annotation-api:jar:1.3.5 (compile)
[INFO] └─ io.quarkus:quarkus-resteasy-deployment:jar:1.11.0.Final (compile)
[INFO]    ├─ io.quarkus:quarkus-resteasy-server-common-deployment:jar:1.11.0.Final (compile)
[INFO]    │  ├─ io.quarkus:quarkus-resteasy-common-deployment:jar:1.11.0.Final (compile)
[INFO]    │  │  ├─ io.quarkus:quarkus-resteasy-common:jar:1.11.0.Final (compile)
[INFO]    │  │  │  ├─ org.jboss.resteasy:resteasy-core:jar:4.5.8.SP1 (compile)
[INFO]    │  │  │  │  ├─ org.jboss.spec.javax.ws.rs:jboss-jaxrs-api_2.1_spec:jar:2.0.1.Final (compile)
[INFO]    │  │  │  │  ├─ org.jboss.spec.javax.xml.bind:jboss-jaxb-api_2.3_spec:jar:2.0.0.Final (compile)
[INFO]    │  │  │  │  ├─ org.jboss.resteasy:resteasy-core-spi:jar:4.5.8.SP1 (compile)
[INFO]    │  │  │  │  └─ com.ibm.async:asyncutil:jar:0.1.0 (compile)
[INFO]    │  │  │  └─ com.sun.activation:jakarta.activation:jar:1.2.1 (compile)
[INFO]    │  │  └─ io.quarkus:quarkus-resteasy-common-spi:jar:1.11.0.Final (compile)
[INFO]    │  ├─ io.quarkus:quarkus-resteasy-server-common-spi:jar:1.11.0.Final (compile)
[INFO]    │  └─ io.quarkus:quarkus-resteasy-server-common:jar:1.11.0.Final (compile)
[INFO]    │     └─ jakarta.validation:jakarta.validation-api:jar:2.0.2 (compile)
[INFO]    ├─ io.quarkus:quarkus-undertow-spi:jar:1.11.0.Final (compile)
[INFO]    │  ├─ io.quarkus.http:quarkus-http-servlet:jar:3.0.18.Final (compile)
[INFO]    │  │  └─ io.quarkus.http:quarkus-http-core:jar:3.0.18.Final (compile)
[INFO]    │  │     └─ io.quarkus.http:quarkus-http-http-core:jar:3.0.18.Final (compile)
[INFO]    │  ├─ jakarta.servlet:jakarta.servlet-api:jar:4.0.3 (compile)
[INFO]    │  └─ org.jboss.metadata:jboss-metadata-web:jar:11.0.0.Final (compile)
[INFO]    │     └─ org.jboss.metadata:jboss-metadata-common:jar:11.0.0.Final (compile)
[INFO]    ├─ io.quarkus:quarkus-vertx-http-deployment:jar:1.11.0.Final (compile)
[INFO]    │  ├─ io.quarkus:quarkus-vertx-core-deployment:jar:1.11.0.Final (compile)
[INFO]    │  │  ├─ io.quarkus:quarkus-netty-deployment:jar:1.11.0.Final (compile)
[INFO]    │  │  │  └─ io.quarkus:quarkus-netty:jar:1.11.0.Final (compile)
[INFO]    │  │  └─ io.quarkus:quarkus-vertx-core:jar:1.11.0.Final (compile)
[INFO]    │  ├─ io.quarkus:quarkus-vertx-http:jar:1.11.0.Final (compile)
[INFO]    │  │  ├─ io.quarkus:quarkus-security-runtime-spi:jar:1.11.0.Final (compile)
[INFO]    │  │  └─ io.quarkus.security:quarkus-security:jar:1.1.3.Final (compile)
[INFO]    │  ├─ io.quarkus:quarkus-kubernetes-spi:jar:1.11.0.Final (compile)
[INFO]    │  ├─ io.quarkus.qute:qute-core:jar:1.11.0.Final (compile)
[INFO]    │  │  └─ io.smallrye.reactive:mutiny:jar:0.12.5 (compile)
[INFO]    │  │     └─ org.reactivestreams:reactive-streams:jar:1.0.3 (compile)
[INFO]    │  └─ org.yaml:snakeyaml:jar:1.27 (compile)
[INFO]    ├─ io.quarkus:quarkus-resteasy:jar:1.11.0.Final (compile)
[INFO]    └─ io.quarkus:quarkus-security-spi:jar:1.11.0.Final (compile)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  3.256 s
[INFO] Finished at: 2021-01-27T21:27:24+08:00
[INFO] ------------------------------------------------------------------------

P.S Types mvnw quarkus-bootstrap:help to list out all the available goals.

5. Quarkus JAX-RX endpoint

The quarkus-maven-plugin generates a simple HelloResource.java for the /hello endpoint and also associate unit test.

5.1 A simple JAX-RX endpoint /hello, and return a plain text output "Hello RESTEasy".

HelloResource.java


package com.mkyong.quarkus;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

@Path("/hello")
public class HelloResource {

  @GET
  @Produces(MediaType.TEXT_PLAIN)
  public String hello() {
      return "Hello RESTEasy";
  }
}

5.2 A unit test to test the above endpoint.

HelloResourceTest.java


package com.mkyong.quarkus;

import io.quarkus.test.junit.QuarkusTest;
import org.junit.jupiter.api.Test;

import static io.restassured.RestAssured.given;
import static org.hamcrest.CoreMatchers.is;

@QuarkusTest
public class HelloResourceTest {

  @Test
  public void testHelloEndpoint() {
      given()
        .when().get("/hello")
        .then()
           .statusCode(200)
           .body(is("Hello RESTEasy"));
  }

}

6. Quarkus and Dockerfile

The quarkus-maven-plugin also generates three Dockerfile files to build a Docker container for the JAR file or the native executable.

Dockerfile.fast-jar – Build a docker container for the JAR file, this is a new packaging format (Fast-jar) since Quarkus 1.5 released, for faster startup times (likely default format in the future release).
Dockerfile.jvm – Build a docker container for the JAR file.
Dockerfile.native – Build a docker container for native executable.

7. Run Quarkus in Dev Mode

7.1 In a separated terminal, type command mvnw compile quarkus:dev to run Quarkus application in development mode, and by default, enabling hot deployment with background compilation, which means if we modify some code, the changes will automatically take effect.

By default, the Quarkus application starts at port 8080.

Terminal


> mvnw compile quarkus:dev

OpenJDK 64-Bit Server VM warning: forcing TieredStopAtLevel to full optimization because JVMCI is enabled
Listening for transport dt_socket at address: 5005
__  ____  __  _____   ___  __ ____  ______
--/ __ \/ / / / _ | / _ \/ //_/ / / / __/
-/ /_/ / /_/ / __ |/ , _/ ,< / /_/ /\ \
--\___\_\____/_/ |_/_/|_/_/|_|\____/___/
2021-01-26 16:19:28,903 INFO  [io.quarkus] (Quarkus Main Thread) quarkus-hello-world-maven 1.0.0-SNAPSHOT
on JVM (powered by Quarkus 1.11.0.Final) started in 1.677s. Listening on: http://localhost:8080
2021-01-26 16:19:28,905 INFO  [io.quarkus] (Quarkus Main Thread) Profile dev activated. Live Coding activated.
2021-01-26 16:19:28,912 INFO  [io.quarkus] (Quarkus Main Thread) Installed features: [cdi, resteasy]

7.2 Access the /hello endpoint.

Terminal


> curl http://localhost:8080/hello
Hello RESTEasy

7.3 We modify the /hello endpoint to return a new string "Hello World Quarkus", and save it.

HelloResource.java


package com.mkyong.quarkus;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

@Path("/hello")
public class HelloResource {

    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String hello() {
        //return "Hello RESTEasy";
        return "Hello World Quarkus";
    }

}

7.4 Back to the terminal that starts the Quarkus application, the vert.x-worker-thread will detect the changed file and do hot replace automatically.

Terminal


OpenJDK 64-Bit Server VM warning: forcing TieredStopAtLevel to full optimization because JVMCI is enabled
Listening for transport dt_socket at address: 5005
__  ____  __  _____   ___  __ ____  ______
--/ __ \/ / / / _ | / _ \/ //_/ / / / __/
-/ /_/ / /_/ / __ |/ , _/ ,< / /_/ /\ \
--\___\_\____/_/ |_/_/|_/_/|_|\____/___/
2021-01-26 16:19:28,903 INFO  [io.quarkus] (Quarkus Main Thread) quarkus-hello-world-maven 1.0.0-SNAPSHOT
on JVM (powered by Quarkus 1.11.0.Final) started in 1.677s. Listening on: http://localhost:8080
2021-01-26 16:19:28,905 INFO  [io.quarkus] (Quarkus Main Thread) Profile dev activated. Live Coding activated.
2021-01-26 16:19:28,912 INFO  [io.quarkus] (Quarkus Main Thread) Installed features: [cdi, resteasy]

2021-01-26 21:52:36,449 INFO  [io.qua.dep.dev.RuntimeUpdatesProcessor] (vert.x-worker-thread-1) Changed source files detected,
recompiling [C:\Users\mkyong\projects\quarkus\quarkus-hello-world-maven\src\main\java\com\mkyong\quarkus\HelloResource.java]
2021-01-26 21:52:36,940 INFO  [io.qua.dep.dev.RuntimeUpdatesProcessor] (vert.x-worker-thread-1) Application restart not required, replacing classes via instrumentation
2021-01-26 21:52:36,972 INFO  [io.qua.dep.dev.RuntimeUpdatesProcessor] (vert.x-worker-thread-1) Hot replace performed via instrumentation, no restart needed, total time: 0.525s

7.4 Access the /hello endpoint again to see the new changes.

Terminal


> curl http://localhost:8080/hello
Hello World Quarkus

7.5 CTRL + C to stop the running Quarkus application.

Further Reading

Download Source Code

$ git clone https://github.com/mkyong/quarkus

$ cd quarkus-hello-world-maven

$ mvnw compile quarkus:dev

$ curl http://localhost:8080/hello

References

About Author

mkyong

Founder of Mkyong.com, love Java and open source stuff. Follow him on Twitter. If you like my tutorials, consider make a donation to these charities.

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Stefanos

1 year ago

There is a typo in the first title, it should read quarkus not quartus please fix this typo.

Thank you for the tutorial!

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