java程序问题

Question

JButton buttonadd = new JButton();                                            //创建添加按钮
buttonadd.addActionListener(new AddBookActionListener());                    //注册监听器
buttonadd.setText("添加");                                                     //设置按钮文本
bottomPanel.add(buttonadd);                 
第二行错了。波浪线花在AddBookActionListener()下，提示 不能实例化类型addActionListener               

Answer 1

buttonadd.addActionListener(new AddBookActionListener()); 
这个应该是
buttonadd.addActionListener(new ActionListener()); 

Answer 2

class AddBookActionListener implements ActionListener {
    public void actionPerformed(ActionEvent e){...}
}