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:
Exception in thread "AWT-EventQueue-0" java.lang.VerifyError: (class: market/CostOperations, method: <init> 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)
I have not a clue what happened. I didn't even modify market/CostOperations.
Here's the constructor though:
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();
}
In Debug Mode I get this:
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
I just need to know what is causing the error and how to fix it. Thanks!
A VerifyError
means the bytecode is invalid, which points to a compiler problem. I would try rebuilding everything in the hopes that it goes away, but otherwise you should file a bug. The bytecode is required to call the superclass constructor manually via invokenonvirtual superclass/<init>()V
, but you shouldn't need to add super();
in the source, the compiler should handle that