The window of the JAVA swing play not to come out? Null pointer errors should be how to change-CodePudding

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The window of the JAVA swing play not to come out? Null pointer errors should be how to change

Time：10-05

Rt
I want to write a Java database link, through the form change the database content topic
To add to the click of a button instruction but couldn't play the desktop window?
This error seems to be saying not null pointer... See don't know much about
O bosses teach

CodePudding user response:

Null pointer exception in line 146, should be destopPane object is empty, the breakpoint you look at the know

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