JTable : No selected row

I want to disable a button whenever there aren't any rows selected in a jTable. Is t开发者_StackOverflow社区here any possible way to do this?

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Use a SelectionListener on your JTable.

JTable table = new JTable();
JButton button = new JButton();
button.setEnabled(false);

ListSelectionModel listSelectionModel = table.getSelectionModel();
listSelectionModel.addListSelectionListener(new ListSelectionListener() {
        public void valueChanged(ListSelectionEvent e) { 
            ListSelectionModel lsm = (ListSelectionModel)e.getSource();
            button.setEnabled(!lsm.isSelectionEmpty());
});

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Something like this should work:

table.getSelectionModel().addListSelectionListener(new ListSelectionListener()
{
    @Override
    public void valueChanged(ListSelectionEvent e)
    {
        if (!e.getValueIsAdjusting())
        {
            boolean rowsAreSelected = table.getSelectedRowCount() > 0;
            button.setEnabled(rowsAreSelected);
        }
    }
});

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Add an selection Listener to your table. If an selection occurs, enable the button. Let the Button be disabled by default.

http://download.oracle.com/javase/6/docs/api/javax/swing/JTable.html