title: NoClassDefFoundError when using Powermock
body: <p>I'm running a <code>junit</code> test case using the <code>PowerMock</code> test runner.
  I'm using the following command line to execute it:</p>
  
  <pre><code>java -cp .:junit-4.9b2.jar:easymock-3.0.jar:powermock-easymock-1.4.8-full.jar org.junit.runner.JUnitCore SampleTest
  </code></pre>
  
  <p>When doing so I am receiving this error:</p>
  
  <pre><code>initializationError(SampleTest)
  java.lang.NoClassDefFoundError: org/junit/internal/runners/TestClassRunner
  ...
  </code></pre>
  
  <p>How can I fix it?</p>