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Index › Programming Questions & Help › Programs › java application vs applet general question
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java application vs applet general question (Read 560 times)
zeitguy
java application vs applet general question
Apr 21st, 2006, 5:52am  
I have written my first visualization in Processing.  It works great as a (windows) application, but when I bring it up as an applet in firefox or IE browsers with Java runtime 1.5 it says the applet has started but there is nothing on screen.

In the development environment I can tag code and watch the console for debugging purposes.  Is there an equivalent approach with applets that will let you monitor program variables even if nothing is writing to the screen?

Sorry if this isn't the right place to ask this question.  I am excited to find Processing, after working in Microsoft Visual Studio for years.  But I don't know jack about Java...
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"If you don't change direction, you might end up where you are headed" - Lao Tzu
 
JohnG
Re: java application vs applet general question
Reply #1 - Apr 21st, 2006, 9:49am  
When it's running as an applet in a browser, there should be a little coffee-cup icon in your taskbar, if you right-click on it and select "Open console" you'll get all the stuff that's normally printed in processing's console.
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zeitguy
Re: java application vs applet general question
Reply #2 - Apr 21st, 2006, 4:52pm  
Thanks.  This is what I see when I open the console:  It seems to indicate that nothing is happening because Sonia can't load...if "(jsyn_fourier_10_ac_scolor_mod_wht_mouseXY.java:9)" indicates line 9 in the code...that is the Sonia.start(this) command.


*******************


Exception in thread "Thread-6" java.lang.NoClassDefFoundError: com/softsynth/jsyn/SynthException
at jsyn_fourier_10_ac_scolor_mod_wht_mouseXY.setup(jsyn_fourier_10_ac_scolor_mod_wh
t_mouseXY.java:9)
at processing.core.PApplet.handleDisplay(PApplet.java:1263)
at processing.core.PGraphics.requestDisplay(PGraphics.java:538)
at processing.core.PApplet.run(PApplet.java:1146)
at java.lang.Thread.run(Unknown Source)
java.lang.NoClassDefFoundError: com/softsynth/jsyn/SynthException
at jsyn_fourier_10_ac_scolor_mod_wht_mouseXY.stop(jsyn_fourier_10_ac_scolor_mod_wht
_mouseXY.java:164)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
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"If you don't change direction, you might end up where you are headed" - Lao Tzu
 
JohnG
Re: java application vs applet general question
Reply #3 - Apr 21st, 2006, 8:03pm  
The java VM that your browser uses needs to have jsyn installed, it doesn't get built entirely into the applet jar file like OpenGL does unfortunately.
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zeitguy
Re: java application vs applet general question
Reply #4 - Apr 21st, 2006, 8:16pm  
Thanks John.  I tried to update my jsyn plug in and was thwarted by Sun's new install scripts, so I did it manually and still no luck.  I need to dig deeper into something here, but at least I learned how to read println() output in a running app.
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"If you don't change direction, you might end up where you are headed" - Lao Tzu
 
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