New to Java

Hi,

i am writing an app to connect to my mysql server and to run a simple query against it. I've managed to connect to my db fine and i am currently writing a java file called Query with the code snipet

 Connection con = DriverManager.getConnection("internet_app_design");
        Statement stmt = null;
if (con == null) {
            System.err.println("Can't connect to database");
            System.exit(0);
        }

try {
        stmt = con.createStatement();

i have all my import statements being

import com.mysql.jdbc.Statement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;

but everytime i do the stmt code, i get an error saying incompatible types but i've seen quite a few tutorial with similar stmt code e.g
http://www.stardeveloper.com/articles/display.html?article=2003091001&page=1

what should i do to rectify this?

cheers