How to get value of a JTable cell during edit

java swing jtable listener

10,607

Solution 1

Use a DocumentListener, illustrated here, or a DocumentFilter, seen here, in your TableCellEditor, shown here.

Solution 2

HINT :

 if (jTable1.getCellEditor() == null) {
                    System.out.println("Not Edited");

                } else {

            System.out.println(jTable1.getValueAt(jTable1.getSelectedRow(),jTable1.getSelectedColumn()));
    }

where jTable1 is your JTable Name

10,607

Mark09

Updated on September 27, 2022

Comments

Mark09 over 1 year
The solution I have seen so far is listen cell change i.e.
```
    TableModelListener tableModelListener = new TableModelListener() {

        @Override
        public void tableChanged(TableModelEvent e) {
            if (e.getType() == TableModelEvent.UPDATE) {

                row = e.getFirstRow();
                col = e.getColumn();

                // do something
            }
        }
    };
```
But I need to get the cell value, selectedRow & selectedColumn when typing, and before hitting enter. How to do it?
- kleopatra over 11 years
  
  I need to get the cell value, selectedRow & selectedColumn when typing, and before hitting enter - sounds weird: it doesn't change while editing, so you can grab it before starting the edit ...
Mark09 over 11 years

My needs is exactly same as Mubashir: This requires pressing enter key, what i require is that when the value is changed the event automatically fires. I am checking the DocumentEvent now.
Mark09 over 11 years

Mubashir is the thread replyier in your TableCellListener link who replied on March 19, 2012
Mark09 over 11 years

Thank you for your information but I am still new to Java and need more time to understand these.
trashgod over 11 years

You definitely need a CellEditor, which will tell you row & column; don't hesitate to update your question going forward.
Neigyl R. Noval almost 10 years

@trashgod, please provide example on where to place the DocumentListener on the extended DefaultCellEditor based on the link you provided. What method do I need to override? I have the same problem. Thanks.
trashgod almost 10 years

Add the listener to the text component used by the CellEditor, which is JTextField in the example cited. Ping me if you pose a new question.
Kyle over 8 years

There is nothing wrong with this answer, not exactly suited for your particular needs (as they are hard to achieve anyway) but it helped me
m4heshd almost 5 years

This is exactly what OP doesn't want. This only fires the event when the editing has stopped.