The type new ActionListener(){} must implement the inherited abstract method ActionListener.actionPe

报错The type new ActionListener(){} must implement the inherited abstract method ActionListener.actionPerformed(ActionEvent)——>类型new ActionListener(){}必须实现继承的抽象方法ActionListener.actionPerformed(ActionEvent)

解决方法：

1. 右键选中Source。

2. 选中Override/Implement Methods

3. 选中ActionListener，点OK。