// runnable can be a func(O o) {} receving the selected row index
static void onDoubleClickOrEnter(final JTable table, final O runnable) {
  onDoubleClick(table, runnable);
  
  table.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT)
    .put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0), "Enter");
    
  table.getActionMap().put("Enter", new AbstractAction() {
    public void actionPerformed(ActionEvent e) {
      callF(runnable, table.getSelectedRow());
    }
  });
}