如何在paintComponent之外进行绘画？
我有一个画布，它在 paintComponent() 方法中绘制所有内容。
是否可以在 paintComponent 外部进行绘制（无需调用 paintComponent 内的方法？）
如果可以，您将如何执行此操作？
I have a canvas that is drawing everything in a paintComponent() method.
Is it possible to draw outside of paintComponent (without calling a method within paintComponent?)
If so how do you go about doing this?
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这取决于您的意思以及为什么需要它。例如，可以创建一个 BufferedImage、获取 Graphics2D 对象、Graphics.paint() 一切应该位于图像上，然后将图像放入
JLabel中。但由于我不知道您想要实现什么（而不是您想要做），我不知道这个答案是否解决了未说明的问题。
It depends what you mean and why you need it. For example, it is possible to create a
BufferedImage, get theGraphics2Dobject,Graphics.paint()everything that should be on the image, then drop the image into aJLabel.But since I do not know what you are trying to achieve (as opposed to what you are trying to do) I cannot know if that answer solves the unstated problem.
我找到了如何解决这个问题。
我所做的就是使 JPanel 成为我的 JFrame 类的内部类。
在 JPanels PaintComponent 中，我让它从外部类调用一个方法，该方法通过传递 PaintComponents Graphics2D 对象来对图形进行一些更新。
这使我能够根据需要在 PaintComponent 的“外部”进行绘制。
I found out how to solve this issue.
What I did was make JPanel an inner class to my JFrame class.
In JPanels paintComponent I had it calling a method from the outer class which did some updating of the graphics, by passing paintComponents Graphics2D object.
This has allowed me to paint "outside" of paintComponent, just as I needed.