title: java.lang.NoClassDefFoundError: org/eclipse/core/runtime/Plugin
body: <p>I am using eclipse Kepler.
  Version: Kepler Service Release 1
  Build id: 20130919-0819</p>
  
  <p>I installed Drools plugin and created a maven project that I converted to a
  drools project.
  ( Could figure out how to create a maven enabled drools project directly )</p>
  
  <p>I then create a new Drools project from the Drools menu, and choose to
  create sample files, rules, test classes etc. Copy those file to my maven
  drools project.</p>
  
  <p>But when running the DroolsTest.java I get ..</p>
  
  <pre><code>java.lang.NoClassDefFoundError: org/eclipse/core/runtime/Plugin 
  </code></pre>
  
  <p>here is my pom.xml :</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/xsd/maven-4.0.0.xsd"&gt;
          &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
  
          &lt;groupId&gt;com.sample&lt;/groupId&gt;
          &lt;artifactId&gt;drools&lt;/artifactId&gt;
          &lt;version&gt;0.0.1-SNAPSHOT&lt;/version&gt;
          &lt;packaging&gt;jar&lt;/packaging&gt;
  
          &lt;name&gt;drools&lt;/name&gt;
          &lt;url&gt;http://maven.apache.org&lt;/url&gt;
  
          &lt;properties&gt;
                  &lt;project.build.sourceEncoding&gt;UTF-8&lt;/project.build.sourceEncoding&gt;
  
          &lt;/properties&gt;
          &lt;dependencyManagement&gt;
                  &lt;dependencies&gt;
                          &lt;dependency&gt;
                                  &lt;groupId&gt;org.drools&lt;/groupId&gt;
                                  &lt;artifactId&gt;drools-bom&lt;/artifactId&gt;
                                  &lt;type&gt;pom&lt;/type&gt;
                                  &lt;version&gt;6.0.0.Final&lt;/version&gt;
                                  &lt;scope&gt;import&lt;/scope&gt;
                          &lt;/dependency&gt;
                  &lt;/dependencies&gt;
          &lt;/dependencyManagement&gt;
  
          &lt;dependencies&gt;
                  &lt;dependency&gt;
                          &lt;groupId&gt;org.kie&lt;/groupId&gt;
                          &lt;artifactId&gt;kie-api&lt;/artifactId&gt;
                          &lt;version&gt;6.0.0.Final&lt;/version&gt;
                  &lt;/dependency&gt;
                  &lt;dependency&gt;
                          &lt;groupId&gt;org.drools&lt;/groupId&gt;
                          &lt;artifactId&gt;drools-compiler&lt;/artifactId&gt;
                          &lt;scope&gt;runtime&lt;/scope&gt;
                          &lt;version&gt;6.0.0.Final&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;
  &lt;/project&gt;
  </code></pre>
  
  <p>I added : </p>
  
  <pre><code>&lt;dependency&gt;
          &lt;groupId&gt;org.eclipse.core&lt;/groupId&gt;
          &lt;artifactId&gt;org.eclipse.core.runtime&lt;/artifactId&gt;
          &lt;version&gt;3.7.0&lt;/version&gt;
      &lt;/dependency&gt;
      &lt;dependency&gt;
          &lt;groupId&gt;org.eclipse.core&lt;/groupId&gt;
          &lt;artifactId&gt;org.eclipse.core.resources&lt;/artifactId&gt;
          &lt;version&gt;3.7.100&lt;/version&gt;
      &lt;/dependency&gt;
  </code></pre>
  
  <p>But now I get : </p>
  
  <pre><code> Error creating Groovy language support:
  java.lang.ClassNotFoundException: org.codehaus.jdt.groovy.integration.internal.GroovyLanguageSupport
      at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
      at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
  </code></pre>