Fwd: Rejected posting to [e-mail]

[Zummy]

>
>Here's a bug report that I got from Ron House.  I was able to duplicate
>the problems with
>an out of the box ij.ImageJApplet class.  My whole browser crashed.  To
>duplicate one of
>them, bring up the imagej applet in the appletviewer, select reload from
>the appletviewer,
>select help ->  About ImageJ, then close the About window.  This is with
>ImageJ 1.35o.
>It's important for us to be able to reload when necessary.  I was able to
>crash my browser reloading the applet on the ImageJ web site.  I was
>unable to run
>the Plot Profile test against the ImageJ web site, because I don't know
>how to load an
>image from the ImageJ Web site, but I'm sure someone can try that.
>
>Here are the exceptions.  I will be working on a fix sometime tomorrow,
>but maybe someone
>will get to this before me.
>
>Ron,
>
>Are you reloading the applet page, or just starting up a new applet
>page?  What happens
>when you bring up two applets at the same time?  I was reloading in my
>test, and it really
>throws a wrench into things.  If we have to, we can deploy the
>functionality as an application,
>which may avoid these (and possibly many other problems), but probably
>achieving many
>more unknown problems (getting updates to the desktop, especially Macs--we
>will have
>to instruct the users to always go through the web page to start the
>application I think).
> From what I saw, there seems to be a pretty systemic problem with
> reloads.  We may
>be hunting down these sorts of problems with applets for a long time.
>
>John
>
>Closing the about window:
>
>java.lang.ArrayIndexOutOfBoundsException: 7 >= 7
>  at java.util.Vector.elementAt(Vector.java:432)
>  at java.awt.Menu.getItemImpl(Menu.java:230)
>  at java.awt.Menu.getItem(Menu.java:222)
>  at java.awt.Menu.remove(Menu.java:385)
>  at ij.Menus.removeWindowMenuItem(Menus.java:979)
>  at ij.WindowManager.removeImageWindow(WindowManager.java:272)
>  at ij.WindowManager.removeWindow(WindowManager.java:244)
>  at ij.gui.ImageWindow.close(ImageWindow.java:258)
>  at ij.ImagePlus.close(ImagePlus.java:296)
>  at ij.Executer.closeImage(Executer.java:203)
>  at ij.Executer.close(Executer.java:195)
>  at ij.Executer.runCommand(Executer.java:117)
>  at ij.Executer.run(Executer.java:63)
>  at java.lang.Thread.run(Thread.java:595)
>
>
>Here's a second exception, by doing what Ron outlines below Plot Profile,
>don't forget
>to reload the applet.
>
>
>java.lang.NullPointerException
>  at ij.util.Java2.setAntialiasedText(Java2.java:28)
>  at
>ij.process.ImageProcessor.getStringWidth(ImageProcessor.java:936)
>  at ij.gui.Plot.draw(Plot.java:360)
>  at ij.gui.Plot.show(Plot.java:447)
>  at ij.gui.ProfilePlot.createWindow(ProfilePlot.java:116)
>  at ij.plugin.filter.Profiler.run(Profiler.java:23)
>  at ij.IJ.runFilterPlugIn(IJ.java:197)
>  at ij.IJ.runPlugIn(IJ.java:126)
>  at ij.Executer.runPlugIn(Executer.java:171)
>  at ij.Executer.runCommand(Executer.java:133)
>  at ij.Executer.run(Executer.java:63)
>  at java.lang.Thread.run(Thread.java:595)
>
>
>
>
>
>>John,
>>
>>An old problem that we've experience with imagej before seems to have
>>returned.  I thought it was fixed with the latest imagej beta, but
>>apparently not.  So, now I'm not sure why it appeared to be working for
>>me at one time.  The scenario is
>>
>>1) start imagej applet
>>2) draw a box or line
>>3) select "Analyze" and "Plot Profile"
>>4) close image j
>>5) repeat 1 thru 3
>>6) null pointer exception occurs
>>
>>in fact even doing a "about imagej" on the second (or any susequent run)
>>causes a null pointer exeception.  I hope we can fix this, it makes it
>>very hard to demo, if we have to restart the browser after loading each image.
>>
>>Ron