Saman A.

asked • 11/20/17

I'm having a run-time error (exception) in my program, the specified exception is mentioned below:

"com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'username' in 'where clause' ". the specified line of code is : String query = "select * from register_info where username='"+username+"' and password= '"+password+"'"; please help....

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