一个用于多个JButton的事件处理程序

Question

我想在Java中为多个JButton添加一个EventHandler.我使用JButton数组JButton[] buttons = new JButton[120].我用过这个解决方案

        for (int i=0; i<btns.length; i++){
        buttons[i].addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {

            }
        });
    }

但我认为上面的代码很糟糕.

Answer 1

使用自定义ActionListener:

CustomActionListener listener = new CustomActionListener();

for (int i=0; i<btns.length; i++){
   buttons[i].addActionListener(listener);
}

class CustomActionListener implements ActionListener {
     public void actionPerformed(ActionEvent e) {
         // Handle click on buttons
         // Use e.getSource() to get the trigger button
         JButton button = (JButton) e.getSource();
     }
}