Error : java.lang.ClassNotFoundException: com.mysql.jdbc.Driver

i am trying to solve this problem by following all steps which is required to connect a Apache Wicket web application to MySQL database.

step1 Right Click on project -> Build Path ->Configure Build Path -> Java Build Path -> Libraries Tab -> Add external jar -> then i browse MySql-Connector-5.0.8 jar file.

step2In program i write down

public static Connection con=null;
public static Connection getConnection()
{
    try
    {
    Class.forName("com.mysql.jdbc.Driver");     
    con=DriverManager.getConnection("jdbc:mysql://localhost:3306/db1", "root", "root");
    }catch(ClassNotFoundException ex){ex.printStackTrace();}
    catch(SQLException e){System.out.println(e);}
    finally{
        try
        {
            con.close();
        }catch(Exception e){}
    }
    return con;
}

but still facing Error the java.lang.ClassNotFoundException: com.mysql.jdbc.Driver now what to do..I need your help