java - 如何将jpanel移动到同一个jframe中的另一个jpanel

Question

我有两个JPanels:a1和a2. a11是 的子面板a1。我想a11搬到a2. 这个怎么做？

Answer 1

Try this:

a2.add(a11); // move a11 from a1 to a2
a2.revalidate(); // apply changes in a2 layout
a1.revalidate(); // apply changes in a1 layout
a2.repaint(); // repaint a2 you to be able to see the changes
a1.repaint(); // repaint a1 you to be able to see the changes

Answer 2

您可以先从 a1 中删除 a11，然后将其添加到 a2。

如下，

a1.remove(a11);
a2.add(a11);
a2.repaint();