[Jsynthlib-devel] Converters Not Working

[Jeff W. <jww...@ya...>]

I started working on a Converter for the Bass Pod and
I immediately ran into a problem. After I added the
converter to my config, I tried opening a library
window and selecting Get... (making sure the library
window has the focus). The Get Sysex Data dialog does
not appear and the following exception is generated:
java.lang.NullPointerException
	at
core.SysexGetDialog$DriverActionListener.actionPerformed(SysexGetDialog.java:231)
	at
javax.swing.JComboBox.fireActionEvent(JComboBox.java:1197)
	at
javax.swing.JComboBox.contentsChanged(JComboBox.java:1268)
	at
javax.swing.AbstractListModel.fireContentsChanged(AbstractListModel.java:100)
	at
javax.swing.DefaultComboBoxModel.setSelectedItem(DefaultComboBoxModel.java:88)
	at
javax.swing.DefaultComboBoxModel.addElement(DefaultComboBoxModel.java:126)
	at javax.swing.JComboBox.addItem(JComboBox.java:690)
	at
core.SysexGetDialog$DeviceActionListener.actionPerformed(SysexGetDialog.java:201)
	at
javax.swing.JComboBox.fireActionEvent(JComboBox.java:1197)
	at
javax.swing.JComboBox.contentsChanged(JComboBox.java:1268)
	at
javax.swing.AbstractListModel.fireContentsChanged(AbstractListModel.java:100)
	at
javax.swing.DefaultComboBoxModel.setSelectedItem(DefaultComboBoxModel.java:88)
	at
javax.swing.DefaultComboBoxModel.addElement(DefaultComboBoxModel.java:126)
	at javax.swing.JComboBox.addItem(JComboBox.java:690)
	at core.SysexGetDialog.<init>(SysexGetDialog.java:75)
	at
core.Actions$GetAction.actionPerformed(Actions.java:896)
	at
javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1819)
	at
javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1872)
	at
javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
	at
javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
	at
javax.swing.AbstractButton.doClick(AbstractButton.java:321)
	at
apple.laf.ScreenMenuItem.actionPerformed(ScreenMenuItem.java:83)
	at
java.awt.MenuItem.processActionEvent(MenuItem.java:589)
	at java.awt.MenuItem.processEvent(MenuItem.java:548)
	at
java.awt.MenuComponent.dispatchEventImpl(MenuComponent.java:285)
	at
java.awt.MenuComponent.dispatchEvent(MenuComponent.java:273)
	at
java.awt.EventQueue.dispatchEvent(EventQueue.java:458)
	at
java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:234)
	at
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:184)
	at
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:178)
	at
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:170)
	at
java.awt.EventDispatchThread.run(EventDispatchThread.java:100)

I thought it was something with my Bass Pod Converter
so I removed it from my config (leaving the other Bass
Pod drivers in place) and repeated the test. This time
the Get Sysex Data dialog displays and everything
appears to work normally. I put the converter back in
and the problem comes back. I decided to remove the
Bass Pod from the config entirely and test with other
device/drivers that use a Converter. I cleaned the
config out completely and tested with one
device/driver at a time. The same NullPointerException
occurs on all of the ones I tested. I tested the
following devices, quitting and restarting the program
and cleaning out the config between each test:
Yamaha TG100
Kawai K4
Yamaha DX7
Korg X3 (this one has two converters)
Yamaha FS1R

I tried using my debugger to place breakpoints around
where the exception is happening but for some reason,
my breakpoints aren't working. Anybody have any ideas?
Could somebody run this test and see if they get the
same result?

Thanks,
Jeff


		
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