title: Runtime Error: java.lang.ExceptionInInitializerError
body: <p>I'm trying to embed a Java applet that I wrote into an html file. Every time I run the file, I get a "java.lang.ExceptionInInitializerError." I assume the problem is in the initialization function so I've included it below. If there is any other information/code that would be useful, let me know!</p>
  
  <p>How to solve the <code>java.lang.ExceptionInInitializerError</code>?</p>
  
  <pre><code>@Override
  public void init(){   
      //Execute a job on the event-dispatching thread; creating this applet's GUI.
      try {  
          SwingUtilities.invokeAndWait(new Runnable() {
              @Override
              public void run() {
                  enterLogin();
              }
          });
      } 
      catch (InterruptedException | InvocationTargetException e) {
          System.err.println("createGUI didn't complete successfully");
      }
  }
  </code></pre>