Java Swing：如何处理子类中发生的事件

Question

I want to build a simple calculator and have this simple construction:

CalculatorGUI <>----- ButtonPanel <>------ JButton

Where Calculator has a JFrame and the ButtonPanel (extends JPanel). The ButtonPanel has JButtons in it.

I want to have a way to pass the JButton events trough ButtonPanel such that I can catch the events in CalculatorGUI. I was thinking about passing events trough ButtonPanel but I do not know how to do such a thing. Is there another way to do this?

Thanks in advance,

Answer 1

You can use an interface to make that happen. Create that interface in your button panel and implement that interfaceListener in your calculator GUI. Declare your method names in interface your calculator GUI will have to override them. Then in your button's event use that interface to let the GUI know about it