[ULC-developer] NullPointerException calling fireTableDataChanged()

[ulc]

hi,

we get a NullPointerException while testing a Table-component which extends 
ULCTable. The Exception occurred while calling fireTableDataChanged() on ower 
TableModel.

I have no idea, to fix this Problem. Maybe you have any advise for me to solve 
it.
The following failure trace occurred:

java.lang.NullPointerException
at com.ulcjava.base.application.ULCProxy.a(ULCProxy.java:26)
at com.ulcjava.base.application.ULCProxy.invokeUI(ULCProxy.java:150)
at 
com.ulcjava.base.server.ULCTableModelAdapter.tableChanged(ULCTableModelAda
pter.java:59)
at 
com.ulcjava.base.application.table.AbstractTableModel.fireTableChanged(AbstractT
ableModel.java:28)
com.ulcjava.base.application.table.AbstractTableModel.fireTableDataChanged(Abstr
actTableModel.java:6)
at .....setData(LeistungsPreisUebersichtTableModel.java: 64)


Best Regards 


public final void testDefault() throws Exception
{       
 //some initializing and jemmy Stuff

        _toolUnderTest = (MarktpreiseTool)                       
getAktuellesToolOnServer();
        
        _toolUnderTest.setKalkulationen();    
}

 public void setKalkulationen()
    {
        _preiseModel.setData();
    } 

//TableModel

public void setData()
    {
             fireTableDataChanged();
    }