I am a new developer ... excuse my ignorance.
I ran FindBugs on the source code and found and fixed the following bugs. the first line is the issue , the second is the solution
Malicious Code Vulnerability @ org.lobobrowser.html.gui.HtmlBlockPanel.java
finalize() is public, changed to protected.
Performance gain obtained @ org.lobobrowser.gui.BrowserPanel.java, org.lobobrowser.gui.NavigatorWindowImpl.java
Inner Class LocalEventDispatch made static
Infinite Recursive loop @ org.lobobrowser.html.domimpl.HTMLOptionElementImpl.java
function getForm() returns this.getForm() , now returns null .
Non-serializable value stored into instance field of serializable class @ org.lobobrowser.html.gui.HTMLPanel.java line 81
made inner class LocalDocumentNotificationListerner serializable.
last line is solution