Create Scala Project From Maven

In here I am using Scala version 2.11.8 and Java version 1.8.

Environment setup in .profile
#scala,java,maven setup
export SCALA_HOME=/home/dhanuka/software/scala-2.11.8
export JAVA_HOME=/home/dhanuka/software/jdk1.8.0_131
export MAVEN_HOME=/home/dhanuka/software/apache-maven-3.3.9
PATH=$PATH:$JAVA_HOME/bin:$MAVEN_HOME/bin:$SCALA_HOME/bin

$ source ~/.profile


Create Maven Project

1. $ mvn archetype:generate 

2. select net.alchim31.maven filter and number for that is 925 . 

$ 925

Then Choose net.alchim31.maven:scala-archetype-simple version:

Choose a number: 3: 3

3. Then type groupId , ArtifactId and etc...

Define value for property 'groupId': org.maven.scala

Define value for property 'artifactId': myfirst-scala

Define value for property 'version' 1.0-SNAPSHOT: :
Define value for property 'package' org.scala.maven: :

Y: : Y

$ ls

myfirst-scala

$ mvn package

[ERROR] /home/uranadh/research/scala/first/myfirst-scala/src/test/scala/samples/specs.scala:18: error: not found: type JUnitRunner
[ERROR] @RunWith(classOf[JUnitRunner])
[ERROR]                  ^
[ERROR] one error found
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
 

Troubleshooting pom.xml

1. Change compiler version to 1.8

<maven.compiler.source>1.8</maven.compiler.source><maven.compiler.target>1.8</maven.compiler.target>


2. Change Scala version to 2.11.8

<scala.version>2.11.8</scala.version>

3. Add specs2-junit_ dependency.

<dependency>
      <groupId>org.specs2</groupId>
      <artifactId>specs2-junit_${scala.compat.version}</artifactId>
      <version>2.4.16</version>
      <scope>test</scope>
 </dependency>

4. Build again

$ mvn package

5. Jar location

myfirst-scala/target/myfirst-scala-1.0-SNAPSHOT.jar


Full pom.xml file

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>org.maven.scala</groupId>
  <artifactId>myfirst-scala</artifactId>
  <version>1.0-SNAPSHOT</version>
  <name>${project.artifactId}</name>
  <description>My wonderfull scala app</description>
  <inceptionYear>2015</inceptionYear>
  <licenses>
    <license>
      <name>My License</name>
      <url>http://....</url>
      <distribution>repo</distribution>
    </license>
  </licenses>

  <properties>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <encoding>UTF-8</encoding>
    <scala.version>2.11.8</scala.version>
    <scala.compat.version>2.11</scala.compat.version>
  </properties>

  <dependencies>
    <dependency>
      <groupId>org.scala-lang</groupId>
      <artifactId>scala-library</artifactId>
      <version>${scala.version}</version>
    </dependency>

    <!-- Test -->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.specs2</groupId>
      <artifactId>specs2-core_${scala.compat.version}</artifactId>
      <version>2.4.16</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.scalatest</groupId>
      <artifactId>scalatest_${scala.compat.version}</artifactId>
      <version>2.2.4</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.specs2</groupId>
      <artifactId>specs2-junit_${scala.compat.version}</artifactId>
      <version>2.4.16</version>
      <scope>test</scope>
    </dependency>
  </dependencies>

  <build>
    <sourceDirectory>src/main/scala</sourceDirectory>
    <testSourceDirectory>src/test/scala</testSourceDirectory>
    <plugins>
      <plugin>
        <!-- see http://davidb.github.com/scala-maven-plugin -->
        <groupId>net.alchim31.maven</groupId>
        <artifactId>scala-maven-plugin</artifactId>
        <version>3.2.0</version>
        <executions>
          <execution>
            <goals>
              <goal>compile</goal>
              <goal>testCompile</goal>
            </goals>
            <configuration>
              <args>
                <!--arg>-make:transitive</arg-->
                <arg>-dependencyfile</arg>
                <arg>${project.build.directory}/.scala_dependencies</arg>
              </args>
            </configuration>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-surefire-plugin</artifactId>
        <version>2.18.1</version>
        <configuration>
          <useFile>false</useFile>
          <disableXmlReport>true</disableXmlReport>
          <!-- If you have classpath issue like NoDefClassError,... -->
          <!-- useManifestOnlyJar>false</useManifestOnlyJar -->
          <includes>
            <include>**/*Test.*</include>
            <include>**/*Suite.*</include>
          </includes>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>



References:

https://docs.scala-lang.org/tutorials/scala-with-maven.html