Java中的抽象类错误 [英] Abstract Class Error in Java

问题描述

我是Java的新手，但是遇到了无法弄清的编译错误。

I'm new to Java and I'm running into a compile error I cannot figure out.

Chapter5Debug is not abstract and does not override abstract method itemStateChanged(java.awt.event.ItemEvent) in java.awt.event.ItemListener

public class Chapter5Debug extends Frame implements ItemListener
       ^

任何人都可以帮助我了解解决此问题所需采取的措施吗？

Can anyone help me understand what I need to do to fix this?

感谢帮助！

Sheila

推荐答案

您必须记住，如果ItemListener是抽象的，那么您将需要在ItemListener中实现所有方法。如果要保留当前的结构，只需将一个空的itemStateChanged方法添加到Chapter5Debug类。

You have to remember that if ItemListener is abstract, then you will need to implement all the methods inside ItemListener. If you want to keep your current structure, you can just add an empty itemStateChanged method to your Chapter5Debug class.

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