如何在JTextField java中显示默认消息 [英] How to display a default message in JTextField java

问题描述

我想创建一个带有消息的JTextField作为deafult。但不是作为正确的文本，而是作为对JTextField内部输入内容的评论。
因此，如果我输入jtf.getText（），它将返回null或空，因为它只是在那里打印的注释。当你点击它然后它消失了，你可以写任何你想要的东西。有没有办法做这样的事情？

I want to create a JTextField with a message inside as a deafult. But not as a proper text but as a comment about what to type inside the JTextField. So if i type jtf.getText() it returns null or empty because it is just a comment that was printed there. When you click on it then it disappears and you can write whatever you want on it. Is there any method to do such a thing?

推荐答案

我相信你想要的是输入提示在文本字段中，如下图所示：

I believe what you want is input hint in the text field, something like the image below:

检查 xswingx 库可以做到这一点。

Check xswingx library which can do this.

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