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question regarding JTable

Posted on 2001-09-11
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Last Modified: 2012-06-27
Hi,
       I have  a JTable which is enclosed in a JScrollPane.There are lot of rows in the table so that the total is not visible.vertical scroll bar is present.I have to move the scroll bar down to see some of the rows at the last.At this scenario,if I add a row to the table, the scroll pane is not displaying the added row(last row).it is not scrolling down to display it.How to programatically scroll down in a table if some row is added or selected
thanks in advance,
YamunaiThuraivan
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Question by:YamunaiThuraivan
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Ovi earned 50 total points
ID: 6475805
something like

Rectangle r = table.getCellRect(row, col); // returns the rectangle of a cell from your last row added

tableScrollPane.getViewport().scrollRectToVisible(r);
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Expert Comment

by:Ovi
ID: 6475812
The two method calls must be used in the 'addRow' portion of your code.
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LVL 92

Expert Comment

by:objects
ID: 6475886
You need to define a TableModelListener and a TreeSelectionListener that scrolls to the added/selected row.
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Expert Comment

by:Ovi
ID: 6475891
Aren't the listeners unnecesary in this case too ?
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Expert Comment

by:objects
ID: 6475926
It's a far more flexible way to do it. The addRow() may not (and does not need) access to the table or the scroll pane. Additionally it is possible to add rows to the table without calling addRow() thus subverting your auto scrolling.
By implementing it as a TreeModelistener, you not only ensure it's called whenever a row is added, but you also have full control over it.

Ignore the mention of the TreeSelectionListener I misread the question.
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