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.

Solution

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());
        }
    }
});

Comments

[kleopatra]

basically correct, though: a) in a real-world context you most probably would want to check for isValueAdjusting b) the value might be null

[mKorbel]

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

[Paul Samsotha]

Thanks, I've added that to the answer.

[kleopatra]

@mKorbel good catch - but yet another than I meant :-)

[onlyforthis]

Where should i place this? In the main of the Jframe class or somewhere else?

[Ankit Kumar Singhal]

This worked for me.