title: Running in Eclipse is Not Able to Find the Class
body: <p>Trying to run my project in Eclipse, but it creates the following error:</p>
  <pre><code>Apr 11, 2014 8:02:17 AM net.minecraft.launchwrapper.LogWrapper log
  INFO: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
  Apr 11, 2014 8:02:21 AM net.minecraft.launchwrapper.LogWrapper log
  SEVERE: Unable to launch
  java.lang.ClassNotFoundException: cpw.mods.fml.common.launcher.FMLTweaker
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:102)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Unknown Source)
        at net.minecraft.launchwrapper.Launch.launch(Launch.java:94)
        at net.minecraft.launchwrapper.Launch.main(Launch.java:27)
  </code></pre>
  <p>But I have all of the files included in my project.</p>
  <p>This is a very similar issue to <a href="https://stackoverflow.com/questions/17984343/eclipse-run-not-finding-the-class/" title="this">this</a>, but I tried the solution of refreshing the classpath and it didn't work.</p>
  <p>Any suggestions?</p>