title: Window Builder in Eclipse (JAVA) Won't Load
body: <p>I'm in the process of learning JAVA and was looking for a GUI editor/creator for use within Eclipse. I Googled and found "WindowBuilder". I installed it via these instructions:</p>
  
  <p><a href="https://developers.google.com/java-dev-tools/wbpro/installation/" rel="nofollow">https://developers.google.com/java-dev-tools/wbpro/installation/</a></p>
  
  <p>When I installed it, I checked each checkbox to install everything. However, when I create a class to create a GUI, and then I click on the "Design" tab, I get "This is not a GUI class and can't be edited graphically" (even though I chose an option for WindowBuilder when creating the class).</p>
  
  <p>When I open classes that already contain (working) GUIs, I get "Unknown GUI Toolkit." </p>
  
  <p>Is there a way to get WindowBuilder running, or perhaps is there a better solution?</p>