java 无论如何要“打包”一个JPanel？
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Is there anyway to "pack" a JPanel?
提问by MattS
Is there any thing I can do to make my JPanel packlike a JFrame, or do something like that. I want to do this instead of giving it dimensions. Please comment if any addition info is needed. Thanks.
有什么我可以做的事情让我的 JPanelpack像一个 JFrame，或者做类似的事情。我想这样做而不是给它尺寸。如果需要任何附加信息，请发表评论。谢谢。
回答by ControlAltDel
If I understand you correctly, your JPanel is not being automatically (re)sized, correct? In that case, you can use Component.validate (or JComponent.revalidate())
如果我理解正确，您的 JPanel 不会自动（重新）调整大小，对吗？在这种情况下，您可以使用 Component.validate（或 JComponent.revalidate()）
回答by georges abitbol
Please try JPanel.updateUIand let me know if that helps.
请尝试JPanel.updateUI，如果有帮助，请告诉我。
You should make GUI calls in the Event Dispatcher Thread:
您应该在 Event Dispatcher Thread 中进行 GUI 调用：
EventQueue.invokeLater(() -> {
someJPanel.updateUI();
});
