java - swing中Timer和TimerTask的区别

Question

嗨，我正在 GUI 中做一个 java 项目，其中我需要在特定时间过去后更改一些内容，我想知道 Timer 和 TimerTask 类之间的差异，以及它们是否都是线程......也想知道知道 java.util.Timer 和 java.swing.Timer 在这种用途上是否不同？ 感谢您的回答

Answer 1

您可以在 API 文档中找到所有答案。 IE。 javax.swing.Timer文档说:

In v 1.3, another Timer class was added to the Java platform: java.util.Timer. Both it and javax.swing.Timer provide the same basic functionality, but java.util.Timer is more general and has more features. The javax.swing.Timer has two features that can make it a little easier to use with GUIs. First, its event handling metaphor is familiar to GUI programmers and can make dealing with the event-dispatching thread a bit simpler. Second, its automatic thread sharing means that you don't have to take special steps to avoid spawning too many threads. Instead, your timer uses the same thread used to make cursors blink, tool tips appear, and so on.

简短的回答是 java.util.Timer 更通用。

此外，如果您检查 API 页面，这些类都不会扩展 Thread。其中一些在内部使用Threads`。

如果你确实需要实现某种计时，我建议使用中央 ScheduledThreadPoolExecutor 。这个计划的执行器比任何计时器都更灵活，而且它为您提供了更多的控制权。