Connection conn = null;
    String url = "jdbc:mysql:///mysql12.000webhost.com\\";
    String dbName = "example";
    String driver = "com.mysql.jdbc.Driver";
    String userName = "root";
    String password = "root";

    try
    {
        Class.forName(driver).newInstance();
        out.println(url+dbName +userName +password);
        conn = DriverManager.getConnection(url+dbName, userName,password);
        
        try
        {
            Statement st = conn.createStatement();
            ResultSet res = st.executeQuery("SELECT * FROM  table1");
            out.println("Emp_code: " + "\t" + "Emp_name: ");
            while (res.next())
            {
                String s = res.getString("userid");
                String name = res.getString("Name");
                out.println(s + "\t\t" + name);
            }
        }
        catch (SQLException s)
        {
            out.println("SQL code does not execute.");
        }    
        
        conn.close();
        
    }
    catch (Exception e)
    {
    }

org.apache.jasper.JasperException: An exception occurred processing JSP page /heading.jsp at line 19

19:         Class.forName(driver).newInstance();
20:         out.println(url+dbName +userName +password);
21:         conn = DriverManager.getConnection(url+dbName, userName,password);
22:         


Stacktrace:
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:551)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:440)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)


root cause

javax.servlet.ServletException: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
    org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:915)
    org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:844)
    org.apache.jsp.index_jsp._jspService(index_jsp.java:173)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:417)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)


root cause

java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
    org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1676)
    org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1521)
    org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:126)
    org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:63)
    java.lang.Class.forName0(Native Method)
    java.lang.Class.forName(Unknown Source)
    org.apache.jsp.index_jsp._jspService(index_jsp.java:94)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:417)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)