how to add multiple action listeners java swing

JButton addButton = new JButton( new AbstractAction("add") {
        @Override
        public void actionPerformed( ActionEvent e ) {
            // add Action
        }
    });

    JButton substractButton = new JButton( new AbstractAction("substract") { 
        @Override
        public void actionPerformed( ActionEvent e ) {
            // substract Action
        }
    });