Re: Cisco SDM Java Applet StackOverflowError

From:

Nigel Wade <nmw@ion.le.ac.uk>

Newsgroups:

comp.lang.java.help,comp.dcom.sys.cisco

Date:

Wed, 24 Jan 2007 09:53:04 +0000

Message-ID:

<ep7aa0$pkq$1@south.jnrs.ja.net>

Ian Wilson wrote:

Note: Crossposted to comp.lang.java.help and comp.dcom.sys.cisco.

My Cisco 877 router provides a Java applet in a web interface for
configuring and monitoring the router. This is Cisco SDM version 2.3.

On one notebook PC this works fine. On another desktop PC I get a
StackOverflowError and the applet never opens it's window.

Previously I used SDM Express, which worked fine on the desktop PC which
doesn't run SDM. (I upgraded SDM Express to SDM in the router in order
to be able to configure router features not supported in SDM Express.)

Both PCs run Windows XP. Both have a Sun Java Runtime (JRE). I have
tried both IE 7 and Mozilla Firefox 1.5.

The notebook has JRE 1.5.0_06.
The desktop has JRE 1.5.0_09, I tried upgrading to 1.5.0_10, same problem.

The Java console reports ...

Requesting URL: http://webrouter/archive/flash:common/common/jploader.jar
Exception in thread "AWT-EventQueue-3" java.lang.StackOverflowError
      at sun.java2d.Disposer.add(Unknown Source)
      at sun.java2d.Disposer.addRecord(Unknown Source)
      at sun.awt.windows.Win32SurfaceData.initOps(Native Method)
      at sun.awt.windows.Win32SurfaceData.<init>(Unknown Source)
      at sun.awt.windows.Win32SurfaceData.createData(Unknown Source)
      at sun.awt.Win32GraphicsConfig.createSurfaceData(Unknown Source)
      at sun.awt.windows.WComponentPeer.replaceSurfaceData(Unknown Source)
      at sun.awt.windows.WComponentPeer.replaceSurfaceData(Unknown Source)
      at sun.awt.windows.WComponentPeer.setBounds(Unknown Source)
      at java.awt.Component.reshapeNativePeer(Unknown Source)
      at java.awt.Component.reshape(Unknown Source)
      at java.awt.Component.setBounds(Unknown Source)
      at java.awt.Component.resize(Unknown Source)
      at java.awt.Component.setSize(Unknown Source)
      at java.awt.BorderLayout.layoutContainer(Unknown Source)
      at java.awt.Container.layout(Unknown Source)
      at java.awt.Container.doLayout(Unknown Source)
      at tea.set.Scroller.doLayout(Unknown Source)
      at java.awt.Container.validateTree(Unknown Source)
      at java.awt.Container.validate(Unknown Source)
      at tea.set.Scroller.aeH(Unknown Source)
      at tea.set.Scroller.aeH(Unknown Source)
      at tea.set.Scroller.aeH(Unknown Source)
      at tea.set.Scroller.aeH(Unknown Source)
      at tea.set.Scroller.aeH(Unknown Source)
The last mesage is repeated many times, possibly hundreds.

That looks like a recursion error. Whatever tea.set.Scroller.aeH is it is
calling itself recursively and not returning, resulting in a stack overflow.

I have never heard of tea.set.Scroller.aeH (and neither has Google), it's not
part of the Java release. That's most likely where the problem lies.

--
Nigel Wade, System Administrator, Space Plasma Physics Group,
University of Leicester, Leicester, LE1 7RH, UK
E-mail : nmw@ion.le.ac.uk
Phone : +44 (0)116 2523548, Fax : +44 (0)116 2523555