title: java.lang.VerifyError on method that worked a minute ago
body: <p>Apologies in advance but I have never seen this error before and don't know what to include. I am using NetBeans and suddenly began getting this error: </p>
  
  <pre><code>Exception in thread "AWT-EventQueue-0" java.lang.VerifyError: (class: market/CostOperations, method: &lt;init&gt; signature: ()V) Constructor must call super() or this()
              at Bluebuild.Main.refreshTables(Main.java:748)
              at Bluebuild.Main.formComponentShown(Main.java:649)
              at Bluebuild.Main.access$100(Main.java:28)
              at Bluebuild.Main$2.componentShown(Main.java:374)
              at java.awt.Component.processComponentEvent(Component.java:6095)
              at java.awt.Component.processEvent(Component.java:6043)
              at java.awt.Container.processEvent(Container.java:2041)
              at java.awt.Window.processEvent(Window.java:1836)
              at java.awt.Component.dispatchEventImpl(Component.java:4630)
              at java.awt.Container.dispatchEventImpl(Container.java:2099)
              at java.awt.Window.dispatchEventImpl(Window.java:2478)
              at java.awt.Component.dispatchEvent(Component.java:4460)
              at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
              at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
              at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
              at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
              at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
              at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
              at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
  </code></pre>
  
  <p>I have not a clue what happened.  I didn't even modify market/CostOperations.</p>
  
  <p>Here's the constructor though:</p>
  
  <pre><code>public CostOperations() throws ParserConfigurationException, SAXException, IOException {
  
          //Open the xml file
          DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
          DocumentBuilder builder = factory.newDocumentBuilder();
          f = new File(dbName);
          doc = builder.parse(f);
          System.out.println(f.canWrite());
  
          //Create the XPath
          XPathFactory xpfactory = XPathFactory.newInstance();
          path = xpfactory.newXPath();
  
      }
  </code></pre>
  
  <p>In Debug Mode I get this: </p>
  
  <pre><code>debug:
  Have no FileObject for C:\Program Files (x86)\Java\jdk1.6.0_20\jre\lib\sunrsasign.jar
  Have no FileObject for C:\Program Files (x86)\Java\jdk1.6.0_20\jre\classes
  </code></pre>
  
  <p>I just need to know what is causing the error and how to fix it.  Thanks!</p>