Trying to get the SUM for for Weekly Sales from SQL table in Java (eclipse)

Question

So, I'm trying to get the variable Weekly Sales from a SQL table, and then add the amounts to a total amount. That being said, I can't seem to be able to connect and I get an error. The error is "No suitable driver found for jdbc:mysql://128.198.162.204/INFS3070" even though I believe I have everything that I need, and everything looks correct to me.

Here's my code for the part I'm stuck on.

    import java.sql.*;

    public class FileConnection 
    {
    public static void main(String[] args) 
    {
        try 
        { 
            // Create variables for database connection parameters
            String url = "jdbc:mysql://128.198.162.204/INFS3070";
            String user = "infsclass";
            String password = "webclass";
            Connection conn = null;
            Statement sqlQuery = null;
            ResultSet results = null;
                        
            // Connect to database using variables
            conn = DriverManager.getConnection(url, user, password); // Different to separate connection file
                        
            // Simply for esthetic purposes
            System.out.println("Connection to database created.");
            System.out.println("------------------------------------------------------");
                        
            // Create object to execute SQL statements
            sqlQuery = conn.createStatement();
                                    
            // Use a String to send the SQL statement to the database
            results = sqlQuery.executeQuery("SELECT SUM FROM SALES");
                                
            // Display results in console
            // We use a while loop to read all of the data
            while (results.next()) 
            {
                // Formatting the console output to appear as a table.
                System.out.printf("%s, %-15s %-15s %-15s %-15s %s\n", // Formats how the printf data will align
                         
                        results.getString("PK"), 
                        results.getString("Store"), 
                        results.getString("Dept"), 
                        results.getString("SalesDate"), 
                        results.getString("Weekly_Sales"), 
                        results.getString("IsHoliday"));
            }
              
            // Close database connection
            conn.close();
            System.out.println("-----------------------------------------------------");
            System.out.println("Connection to database closed.");     
        }
          
        catch (SQLException e) 
        {  
            e.printStackTrace();
        }           
    }
}

Also, here's the SQL table