Avoiding skipping a row By next() Method of ResultSet

Question

This is a simple code print some rows from a Database. but When I execute this nothing is print on screen. I figured that the problem is rs.next() method is ski

Answer 1

No no need to use :

 if (rs.next()) {

The while is enough, this make the result two times. instead you can use :

boolean b = false;
while (rs.next()) {
   b = true;
   ...
}

if(!b) {
  JOptionPane.showMessageDialog(null, "Not Found");
}

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You have to use PreparedStatement instead, to avoid any SQL Injection or syntax error.