问题描述
对不起，我是GUI界面的初学者(真的，是Java的初学者)，我想知道:如何列出用户可以向其中添加项目或从中删除项目的项目列表，同时按下+或-按钮?
Sorry, I'm kind of a beginner to GUI interfaces (well, a beginner to java, really), and I was wondering: How does one make a list of items that the user can add items to or remove items from, with the press of a + or - button?
我真正想要的(对不起，如果我在这里有点模糊)是您有时在应用程序窗口中看到的那些列表之一，它看起来像一个文本框，但无法键入.现在，我的应用程序(这是一个用于组织医院时间表的小型应用程序)仅从一个文本文件读取并写入另一个文本文件.没有GUI，没有窗口，用户只需在文本文件中写一堆名称(每行一个)，然后运行jar并打开输出文件，并且计划就在那儿.我希望他们能够使用按钮从列表中添加或删除名称-通过单击加号"并键入名称来添加名称，然后通过选择名称并单击减号"来删除名称.但是，我仍然希望将其保存到文本文件，以便下次用户打开该应用程序时，所有名称仍在列表中.为了清楚起见，我不希望有一个列表显示输出(即，将名称组织成一个日程表)，而只包含一个包含输入的列表.
What I really want (sorry if I'm being a little vague here) is one of those lists you sometimes see in application windows, which looks like a text box but cannot be typed in. Right now my application (it's a small app to organize the schedule of a hospital) just reads from a text file and writes to another text file. No GUI, no window, the user just writes a bunch of names in the text file, one per line, then runs the jar and opens the output file and the schedule is there. I want them to just be able to add or remove names from a list with buttons — adding a name by clicking 'plus' and typing the name, and removing a name by selecting the name and clicking 'minus'. I still, however, want it to save to a text file, so that the next time the user opens the app, all the names are still on the list.Just to be clear, I don't want a list displaying the output (i.e. the names organized into a schedule), just one containing the input.
非常感谢您可以提供的任何帮助.
Thanks a lot for any help you can give.
推荐答案
您可能希望具有几个JButton实例的JList添加/删除项目.
You probably want a JList with a couple of JButton instances to add/remove items.
请参阅:
- How to Use Lists
- How to Use Buttons, Check Boxes, and Radio Buttons
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