库存是不是抽象的，不重写抽象方法 [英] Inventory is not abstract and does not override abstract method

问题描述

OK，所以我的小程序没有编译和我Google了一些答案，并没有奏效。 （如乘坐公共出来公共类的）...

OK so my applet is not compiling and I Googled some answers and none worked. (Such as taking public out of public class)...

下面是我的code： http://www.so.pastebin.com/MBjZGneg

Here's my code: http://www.so.pastebin.com/MBjZGneg

Heere是我的错误：

Heere is my error:

C：\\用户\\丹\\文档\\ DanJavaGen \\ Inventory.java：12：库存不是抽象的，不覆盖java.awt.event.KeyListener抽象方法的keyReleased（java.awt.event.KeyEvent中）
公共类库存扩展的Applet实现的KeyListener {

C:\Users\Dan\Documents\DanJavaGen\Inventory.java:12: Inventory is not abstract and does not override abstract method keyReleased(java.awt.event.KeyEvent) in java.awt.event.KeyListener public class Inventory extends Applet implements KeyListener {

...帮助？ :)谢谢。

... help? :) please.

推荐答案

这意味着它说什么。你是不是贯彻<一个href=\"http://java.sun.com/javase/6/docs/api/java/awt/event/KeyListener.html#keyReleased%28java.awt.event.KeyEvent%29\"相对=nofollow>调用keyReleased 方法。你还没有实施<一个href=\"http://java.sun.com/javase/6/docs/api/java/awt/event/KeyListener.html#keyTyped%28java.awt.event.KeyEvent%29\"相对=nofollow> 的keyTyped。如果你想保持你当前类的结构，你可以添加空的方法：

It means what it says. You are not implementing the keyReleased method. You're also not implementing keyTyped. If you want to keep your current class structure, you can add empty methods:

public void keyReleased(KeyEvent e){} // ignore
public void keyTyped(KeyEvent e){} // ignore

如果你把监听器在一个单独的（可能是内部）类，你可以扩展的 KeyAdapter ，它为您提供了这些空方法。

If you put the listener in a separate (possibly inner) class, you could extend KeyAdapter, which provides these empty methods for you.

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