How do you add an ActionListener onto a JButton in Java

private JButton jBtnDrawCircle = new JButton("Circle");
private JButton jBtnDrawSquare = new JButton("Square");
private JButton jBtnDrawTriangle = new JButton("Triangle");
private JButton jBtnSelection = new JButton("Selection");

jBtnSelection.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent e) {
    selectionButtonPressed();
  }
} );

jBtnDrawCircle.addActionListener( /*class that implements ActionListener*/ );