In addition to the normal dependencies in a Java Spring Boot project, there are two additional dependencies in pom.xml

    <dependency>
      <groupId>org.jetbrains.kotlin</groupId>
      <artifactId>kotlin-stdlib-jre8</artifactId>
      <version>${kotlin.version}</version>
    </dependency>

    <dependency>
      <groupId>org.jetbrains.kotlin</groupId>
      <artifactId>kotlin-reflect</artifactId>
      <version>${kotlin.version}</version>
    </dependency>

The following are a couple of important things to note:

• kotlin-stdlib-jre8 is the standard library supporting the new JDK APIs added in Java 8
• kotlin-reflect is the runtime component for using reflection features on a Java platform

In addition to spring-boot-maven-plugin, kotlin-maven-plugin is added in as a plugin in pom.xml. kotlin-maven-plugin compiles Kotlin sources and modules. This plugin is configured to be used during the compile and test-compile phases. The following piece of code shows the details:

    <plugin>
     <artifactId>kotlin-maven-plugin</artifactId>
     <groupId>org.jetbrains.kotlin</groupId>
     <version>${kotlin.version}</version>
     <configuration>
       <compilerPlugins>
         <plugin>spring</plugin>
       </compilerPlugins>
       <jvmTarget>1.8</jvmTarget>
     </configuration>
    <executions>
    <execution>
      <id>compile</id>
      <phase>compile</phase>
      <goals>
        <goal>compile</goal>
      </goals>
    </execution>
    <execution>
      <id>test-compile</id>
      <phase>test-compile</phase>
      <goals>
        <goal>test-compile</goal>
      </goals>
     </execution>
    </executions>
    <dependencies>
      <dependency>
        <groupId>org.jetbrains.kotlin</groupId>
        <artifactId>kotlin-maven-allopen</artifactId>
        <version>${kotlin.version}</version>
       </dependency>
    </dependencies>
   </plugin>