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database login update problem

 
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good day everybody, i want to used this code for users login but each time i want the count column to update, it will return an empty page. I know may be i did not structure
this code properly especially

below is the main code

 
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Step 1: move the Java code out of a JSP and into a servlet or bean. There should be no Java code in a modern JSP.
 
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