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1142296964

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Last activity June 18, 2022 10:21
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1142296964 commented, June 18, 2022 10:21
后来者，参照这个解决：https://stackoverflow.com/questions/32528614/nullpointerexception-when-adding-jpanel-from-one-class-to-a-jframe
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1142296964 commented, June 18, 2022 10:06
my case should be the same as his, this panel is what I dragged to the form through the gui designer, how to instantiate it
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