Java Swing：使用ActionMap [英] Java Swing: Using ActionMap

问题描述

我之前看到一篇帖子建议赞成对侦听器进行操作。我对ActionMap不太熟悉。每种方法有哪些缺点？我喜欢制作实现监听器的内部类。这是一种不好的做法吗？

I've seen a post earlier that recommends favoring Actions over listeners. I am not so familiar with the ActionMap. What are the disadvantages of the each approach? I like to make inner classes that implement listeners. Is that a bad practice?

谢谢

推荐答案

键绑定依赖于操作。 操作可能存在风险 实施在存储方面往往比典型的 ActionListener 更昂贵。在实践中，问题不会出现。以下是示例。

Key bindings rely on actions. There is a potential risk that Action "implementations tend to be more expensive in terms of storage than a typical ActionListener." In practice, the problem does not arise. Here is an example.

使用 KeyListener 在概念上更容易理解，但通常更难以维护。一个人不可避免地最终会重新创造某种约束机制。这个示例虽然具有指导性，甚至适用于游戏，但却是不必要的复杂。

Using KeyListener is conceptually easier to understand but typically more difficult to maintain. One inevitably ends up re-creating some kind of binding machinery. This example, while instructive and even appropriate for a game, is needlessly complex.

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