java - Using many panesl in a class that extends JPanel

Question

I have a main class which extends JFrame, and its content is contained in other classes which extend JPanel.

Now, in those other classes, I want to use several panels to group the content in a good order.

Is it possible to use many panels( by creating several JPanel objects in that class) in this class that extends JPanel?

Answer 1

JPanelextends JComponent，它 extends Container，所以JPanel是一个容器，所以它包含 other Component。

所以，是的，你可以这样做，事实上，根据上下文和要求，这实际上是一个好主意。

你可以看看这个例子和这个例子

mKorbel 提出了一个有效的观点。JFrame通常不建议从顶级容器（JPanel如JFrame