java.io.IOException: java.io.IOException: error=2, No such file or directory
   at java.lang.UNIXProcess.<init>(UNIXProcess.java:148)
   at java.lang.ProcessImpl.start(ProcessImpl.java:65)
Caused: java.io.IOException: Cannot run program "xdg-open": java.io.IOException: error=2, No such file or directory
   at java.lang.ProcessBuilder.start(ProcessBuilder.java:459)
   at org.netbeans.modules.extbrowser.NbDefaultUnixBrowserImpl.setURL(NbDefaultUnixBrowserImpl.java:99)
   at org.openide.awt.HtmlBrowser$1URLSetter.run(HtmlBrowser.java:474)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:125)
   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)