JTable - ActionListener for select a row

Question

I need the right AcionListener for my JTable.

At program start there is no row selected by default. If I now select any row in this JTable then the ActionListener shall start.

Do you ***see*** an `addActionListener(..)` method in [The Fine Manual](http://docs.oracle.com/javase/7/docs/api/javax/swing/JTable.html)? What 'add listener' methods *do* you see? — Andrew Thompson, Dec 02 '13 at 11:25

Paul Samsotha · Answer 1 · 2013-12-02T12:01:08.333

26

Try this. I use a ListSelectionListener and it works for me. I added a listener to the table Model

jTable.getSelectionModel().addListSelectionListener(new ListSelectionListener() {
    @Override
    public void valueChanged(ListSelectionEvent event) {
        if (jTable.getSelectedRow() > -1) {
            // print first column value from selected row
            System.out.println(jTable.getValueAt(jTable.getSelectedRow(), 0).toString());
        }
    }
});

edited Dec 02 '13 at 12:01

answered Dec 02 '13 at 11:34

Paul Samsotha

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basically correct, though: a) in a real-world context you most probably would want to check for isValueAdjusting b) the value might be null – kleopatra Dec 02 '13 at 11:37
`the value might be null`, she means to test `if(selectedRow > -1)`, required, otherwise you can to kill JTables view with endless loop from exceptions that can freeze Swing GUI – mKorbel Dec 02 '13 at 11:56
Thanks, I've added that to the answer. – Paul Samsotha Dec 02 '13 at 12:01
1

@mKorbel good catch - but yet another than I meant :-) – kleopatra Dec 02 '13 at 13:06
Where should i place this? In the main of the Jframe class or somewhere else? – onlyforthis May 15 '15 at 16:11
This worked for me. – Ankit Kumar Singhal Mar 02 '17 at 07:53

JTable - ActionListener for select a row

1 Answers1