title: Eclipse plugin: java.lang.NoClassDefFoundError
body: <p>As you can see:</p>
  <p><img src="https://i.stack.imgur.com/Iz1O8.png" alt="enter image description here" /></p>
  <p>I added <code>jni4net.j-0.8.6.0.jar</code> to my referenced libraries but I still receive a <code>java.lang.NoClassDefFoundError</code> Exception:</p>
  <pre><code>java.lang.NoClassDefFoundError: net/sf/jni4net/Bridge
      at sibeclipseplugin.debug.DebuggerInterface.initialize(DebuggerInterface.java:15)
      at sibeclipseplugin.debug.SibDebugTarget.&lt;init&gt;(SibDebugTarget.java:65)
      at sibeclipseplugin.ui.launch.LaunchConfigurationDelegate.launch(LaunchConfigurationDelegate.java:30)
      at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:858)
      at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:707)
      at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:1018)
      at org.eclipse.debug.internal.ui.DebugUIPlugin$8.run(DebugUIPlugin.java:1222)
      at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)
  Caused by: java.lang.ClassNotFoundException: net.sf.jni4net.Bridge cannot be found by SIBEclipsePlugin_0.0.0.1
      at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501)
      at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
      at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
      at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
      at java.lang.ClassLoader.loadClass(Unknown Source)
      ... 8 more
  </code></pre>
  <p>I have no idea what the problem is. When I start the project as Eclipse-Application it can't find that class. Running the same code in a normal Java-Project works.</p>
  <p>Does anybody know how to fix this?</p>