java - JSP Page error While inserting data -

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enter image description here

im noob programming please following code.while running code gave me nullpointer exception

you never call establishconnection in dao class. result of con null.

add method establishconnection in constructor of persondao:

public persondao(){     establishconnection(); }

and try again.

furthermore read java code conventions. class name should start uppercase: persondao correct , follows camelcase code conventions.


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