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    <p>Using the maven scala plugin, a config like the one below will work for a project that mixes java and scala source (scala source of course goes in the /scala directory, as mentioned by someone else). </p> <p>You can run run mvn compile, test etc... and it will all work as normal. Very nice (it will run scalac first automatically). </p> <p>For a great IDE, IntelliJ 8 works nicely: add in the scala plug in, then add a scala facet, and then adjust the compile setting for scala to run scalac first (critical if you have circular dependencies with scala and java source). </p> <pre><code>&lt;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"&gt; &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt; &lt;groupId&gt;demo&lt;/groupId&gt; &lt;artifactId&gt;scala-java-app&lt;/artifactId&gt; &lt;version&gt;0.0.1-SNAPSHOT&lt;/version&gt; &lt;packaging&gt;jar&lt;/packaging&gt; &lt;name&gt;scala-java-app&lt;/name&gt; &lt;repositories&gt; &lt;repository&gt; &lt;id&gt;scala-tools.org&lt;/id&gt; &lt;name&gt;Scala-tools Maven2 Repository&lt;/name&gt; &lt;url&gt;http://scala-tools.org/repo-releases&lt;/url&gt; &lt;/repository&gt; &lt;/repositories&gt; &lt;pluginRepositories&gt; &lt;pluginRepository&gt; &lt;id&gt;scala-tools.org&lt;/id&gt; &lt;name&gt;Scala-tools Maven2 Repository&lt;/name&gt; &lt;url&gt;http://scala-tools.org/repo-releases&lt;/url&gt; &lt;/pluginRepository&gt; &lt;/pluginRepositories&gt; &lt;build&gt; &lt;plugins&gt; &lt;plugin&gt; &lt;groupId&gt;org.scala-tools&lt;/groupId&gt; &lt;artifactId&gt;maven-scala-plugin&lt;/artifactId&gt; &lt;executions&gt; &lt;execution&gt; &lt;id&gt;compile&lt;/id&gt; &lt;goals&gt; &lt;goal&gt;compile&lt;/goal&gt; &lt;/goals&gt; &lt;phase&gt;compile&lt;/phase&gt; &lt;/execution&gt; &lt;execution&gt; &lt;id&gt;test-compile&lt;/id&gt; &lt;goals&gt; &lt;goal&gt;testCompile&lt;/goal&gt; &lt;/goals&gt; &lt;phase&gt;test-compile&lt;/phase&gt; &lt;/execution&gt; &lt;execution&gt; &lt;phase&gt;process-resources&lt;/phase&gt; &lt;goals&gt; &lt;goal&gt;compile&lt;/goal&gt; &lt;/goals&gt; &lt;/execution&gt; &lt;/executions&gt; &lt;/plugin&gt; &lt;plugin&gt; &lt;artifactId&gt;maven-compiler-plugin&lt;/artifactId&gt; &lt;configuration&gt; &lt;source&gt;1.5&lt;/source&gt; &lt;target&gt;1.5&lt;/target&gt; &lt;/configuration&gt; &lt;/plugin&gt; &lt;/plugins&gt; &lt;/build&gt; &lt;dependencies&gt; &lt;dependency&gt; &lt;groupId&gt;org.scala-lang&lt;/groupId&gt; &lt;artifactId&gt;scala-library&lt;/artifactId&gt; &lt;version&gt;2.7.2&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;junit&lt;/groupId&gt; &lt;artifactId&gt;junit&lt;/artifactId&gt; &lt;version&gt;3.8.1&lt;/version&gt; &lt;scope&gt;test&lt;/scope&gt; &lt;/dependency&gt; &lt;/dependencies&gt; </code></pre> <p></p>
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    1. USMichael Neale
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    1. COThanks, this worked really well!
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      1. USJames Kingsbery
    2. COAgreed that IntelliJ is the superior Scala IDE right now. With Odersky and Bonér working on Eclipse Scala IDE it should catch up eventually, but right now it's not nearly as good as IntelliJ
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    3. COSounds good! In maven I then type `mvn idea:idea` to have an IntelliJ project. From the IDE, when I right click on src/main/java/ or src/main/scala/ I do not have the option to create a new Scala Class or Object (only java stuff is displayed). How do I fix this?
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