Java MySQL Test

First Test
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class Example1 {

    public static void main(String[] argv) {
      Connection conn = null;      
      try {
        conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/",
                                        "user","pwd");
      } catch (SQLException se) {
        System.out.println("Couldn't connect: print out a stack trace and exit.");
        se.printStackTrace();
        System.exit(1);
      }

          System.out.println("Connected to database");
      if (conn != null)
        System.out.println("We connected to the database! Let's select some data.");
      else
        System.out.println("We should never get here.");

      try {
         // processing a simple query
        Statement st = conn.createStatement();
         //by default it fetches all the rows st.setFetchSize(0)
        // conn.setAutoCOmmit(false);
        // st.setFetchSize(50);
        ResultSet rs = st.executeQuery("Select name,tel from test.contact");

        while (rs.next()) {
            System.out.print("Name=");
            System.out.println(rs.getString(1));
            System.out.print("Tel=");
            System.out.println(rs.getString(2));        }
        
      } catch (SQLException se) {
            System.out.println("Couldn't process a query: print out a stack trace and exit.");
            se.printStackTrace();
            System.exit(1);              
      }
    }

}