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I'm baffled. With extensive testing I can confirm that if I add objects faster than y to the DefaultListModel connected to the JList, the JList dissapears.

Here's what I'm doing:

JPanel pane = new JPanel(new BorderLayout());
JList<LogMessage> messageList = new JList<LogMessage>(dataModel.getMessageList());
pane.add(messageList , BorderLayout.CENTER);

//add pane to JFrame etc.

After initializing the GUI I add 100 LogMessages to the DefaultListModel. What's strange is that everything works if I do Thread.sleep(10); between each of the 100 new LogMessages. If I don't - the JList vanishes.

I tried to export as a runnable jar and run it - the problem was gone. I still need to be able to run run my programs from eclipse though.

What could be causing this?

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1 回答 1

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所有 Swing 组件都只能在 theEvent Dispatch Thread或 the上访问EDT。如果不是，那么你就违反了摆动线程原则，你可能会遇到像你得到的那样的奇怪错误。

Runnable要发布要排队在 EDT 上运行的任务（即 a ），请使用SwingUtilities.invokeLater

于 2013-04-23T20:28:29.723 回答