Simple components, such as JButton and JTextField, use one constant.

简单的组件，例如JButton和JTextField，使用一个常量。

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To demonstrate, Listing 3 shows the XML file used to customize the look of a JButton control.

为了演示，清单3显示了用来定制JButton控件外观的XML文件。

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Here's how to create a FloatingDock object on the bottom of the screen and add a JButton to it.

下面展示了如何在屏幕底部创建FloatingDock对象并向它添加J button ？

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Now, if you try to fetch the last element as a JButton, a class cast exception happens at run time

现在，如果您尝试将最后一个元素作为JButton 来提取，则在运行时会出现一个类转换异常

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Instead of just having a collection and adding JButton objects into it, you say that you have a collection of JButton objects.

不只是拥有一个集合并向其中添加J Button对象，您可以拥有一个JButton对象的集合。

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The second line of the error message says you are trying to add a JLabel to what the third error line is reporting as a List of JButton objects.

错误消息的第二行表明，您尝试将一个JLabel添加到第三个错误行报告的JButton对象的List。

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AWT and Swing components, such as JButton or JTable, use the Observer pattern to decouple the generation of GUI events from their semantics within a given application.

AWT和Swing组件(例如JButton或JTable)使用观察者模式消除了GUI事件生成与它们在指定应用程序中的语义之间的耦合。

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So, in the case of a JButton, if the third argument was text, then this would equate to a setText() call, where the argument to the method was represented by the String sent into the fourth argument.

所以，对于 JButton ，如果第三个参数是text ，那么这相当于一个setText()调用，该方法所需要的参数是由传递给第四个参数的String来表示的。

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So, in the case of a JButton, if the third argument was text, then this would equate to a setText() call, where the argument to the method was represented by the String sent into the fourth argument.

所以，对于 JButton ，如果第三个参数是text ，那么这相当于一个setText()调用，该方法所需要的参数是由传递给第四个参数的String来表示的。

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