I have a JPanel
that I want to add some components. in particular JButton
s to at runtime based on the content of a user supplied file.
I can add compontents to panel if I call it from the constructor of the JFrame derived form class, even after everything else have been constructed, but If I read the file first and then add components to the panel the call succeds but the added components are never shown.
Does anybody know how I force Java to do as I want?
在将JButton
添加到JPanel
之后,在JPanel
上调用方法validate()
。
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