java 如何向带有边框的 JPanel 添加填充
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How to add padding to a JPanel with a border
提问by stommestack
I want to add padding to some JPanels. I found this answer: https://stackoverflow.com/a/5328475/1590323
我想向某些JPanels添加填充。我找到了这个答案：https: //stackoverflow.com/a/5328475/1590323
It worked fine for a panel without a border. But how do I do it for a panel that already has a border? (A TitledBorderin this case)
它适用于没有边框的面板。但是对于已经有边框的面板，我该怎么做呢？（TitledBorder在这种情况下是A ）
I tried:
我试过：
JPanel mypanel = new MyPanel(); // Panel that I am going to add a TitledBorder to, but needs padding
mypanel.setBorder(new EmptyBorder(10,10,10,10));
JPanel mypanel_container = new JPanel();
TitledBorder border = BorderFactory.createTitledBorder(BorderFactory.createRaisedBevelBorder(), "My panel");
border.setTitleJustification(TitledBorder.LEADING);
mypanel_container.setBorder(border);
mypanel_container.add(mypanel);
this.add(mypanel_container);
(In short: Adding an EmptyBorderto the panel that should have a TitledBorder, then make another panel with the TitledBorderand add the first panel to that, and then use that panel)
（简而言之：向EmptyBorder应该有 的面板添加TitledBorder，然后使用 制作另一个面板TitledBorder并将第一个面板添加到该面板，然后使用该面板）
But then I got way too large padding that ignored the contructor values of the EmptyBorder.
但是后来我得到了太大的填充，忽略了EmptyBorder.
So how do I add padding to a JPanel with a graphical border?
那么如何向带有图形边框的 JPanel 添加填充呢？
回答by NiziL
You can take a look at CompoundBorder.
你可以看看CompoundBorder。
A composite Border class used to compose two Border objects into a single border by nesting an inside Border object within the insets of an outside Border object. For example, this class may be used to add blank margin space to a component with an existing decorative border:
Border border = comp.getBorder(); Border margin = new EmptyBorder(10,10,10,10); comp.setBorder(new CompoundBorder(border, margin));
一个复合 Border 类，用于通过将内部 Border 对象嵌套在外部 Border 对象的插图中，将两个 Border 对象组合成单个边框。例如，此类可用于向具有现有装饰边框的组件添加空白边距空间：
Border border = comp.getBorder(); Border margin = new EmptyBorder(10,10,10,10); comp.setBorder(new CompoundBorder(border, margin));
Of course, you can also use BorderFactory#createCompoundBorder(border, margin).
当然，您也可以使用BorderFactory#createCompoundBorder(border, margin).
