Java - Jdbc Connection throw NullPointerException
I have webapplication which is running succesfully. Reporting module is there using core java. When the user click card sale then it show report , & 2nd time click on that working after 6 or 7th time clcik on same option it throw `NullPointerException ` & it say ` HTTP Status 500` . I oped the connection & closing it.


Please suggest any solution this.
Java - Jdbc Connection throw NullPointerException
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I have webapplication which is running succesfully. Reporting module is there using core java. When the user click card sale then it show report , & 2nd time click on that working after 6 or 7th time clcik on same option it throw `NullPointerException ` & it say ` HTTP Status 500` . I oped the connection & closing it.


Please suggest any solution this.