相关疑难解决方法(0)

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

如何将动作侦听器添加到这些按钮,以便从我可以调用actionperformed它们的主方法,所以当它们被单击时,我可以在我的程序中调用它们？