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NSTableView and Java
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NSTableView and Java


  • Subject: NSTableView and Java
  • From: Bryan Zarnett <email@hidden>
  • Date: Sun, 12 May 2002 14:01:26 -0400

I'm having a hell of a time debugging a problem with NSTableView in Java.

The view comes up with the data from my data source. I can click on it a few
times, resize it once or twice and then I get the following exception:

2002-05-12 13:54:28.547 CocoaTableTest[2163] java/lang/NullPointerException
Stack Trace:
java.lang.NullPointerException
ObjCJava FATAL:
jobjc_lookupObjCObject(): returning garbage collected java ref for objc
object of class SomeDataSource
ObjCJava Exit


It's very annoying since there is very little code:

// This is in my window controller
SomeDataSource someDataSource = new SomeDataSource();
tableView.setDataSource(someDataSource);

My Data Source implements all the abstract methods of NSTableView.DataSource
and returns hard coded values. For instance, "numberOfRows..." always
returns 3 and tableViewObjectValueForLocation always returns "Foo".

Has anyone else had any problems. Or did I just miss something silly.


I'm going to try the same thing right now in Objective-C to see if the
results are different aka I found a weird bug.

Bryan
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