java MySql getConnection。例外，com类。mysql。jdbc。找不到驱动程序

Question

每当我试图从ProductDataBean调用getConnection时，我都会遇到类not found exception的错误。以下是代码：

产品。java

ProductDataBean pdb = new ProductDataBean();
Connection connect = pdb.getConnection(); // ClassNotFoundException on this line)

ProductDataBean。java

   package cart;
   import java.io.*;
   import java.sql.*;
   import java.util.*;

   public class ProductDataBean implements Serializable{


public static Connection getConnection() throws ClassNotFoundException, SQLException{
    Class.forName("com.mysql.jdbc.Driver");
    String connURL ="jdbc:mysql://localhost/onlinecart?user=root&password=teck1577130713";
    Connection conn = DriverManager.getConnection(connURL); 
    return conn;
}
}

如果你能帮我解决这个问题，我将不胜感激