JTable NullPointer Exception at 783 rows.

[ra89120]

Hi, we have a DB application with a java front end.

We are using JDK 1.4.2_01.

We load query results to a an TableModel and place
this into a JTable.

We then goto each row in the table to grab columns 0 - 5
using the row numbr we got from the abstract table model.

curRow = atm.getCurrentRow();

for(int j = 0; j < 6; j++)
jtLocal.getComponentAt(curRow, j).setEnabled(true);

We loop through each row like this. We can have any number of rows depending on the live, dynamic data we are drawing from.

When we reach a curRow of 783 exactly, we get a NullPointer exception at the jtLocal.getComponentAt(curRow, j).setEnabled(true);

The abstract table model gives us the curRow, but the
JTable knows nothing about that row.

Any ideas of what's happening? Is there a JTable limitation or a TableModel limitation?

Any help will be appreciated.

 

[dbleyl]

Is it possible that the number of rows change
while processing? Either behind the model or
as a side-effect?

What does 784th row return? Why are you enabling
the component? That in itself seems strange.