Question about JSP database connection?

My connection program is as follows:
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<% @ Page contentType = "text/html; charset = GB2312" %>
<% Class. forName ("com. microsoft. jdbc. sqlserver. SQLServerDriver"). newInstance ();
String url = "jdbc: microsoft: sqlserver: // localhost: 1433; DatabaseName = questionnaire ";
Connection con = DriverManager. getConnection (url, "sa", "801208161 ");
Statement smt = con. createStatement (ResultSet. TYPE_SCROLL_SENSITIVE, ResultSet. CONCUR_UPDATABLE );
ResultSet rs;
String SQL;
%>
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The following error message is displayed:
An error occurred between lines: 1 and 7 in the jsp file:/opendata. jsp
Generated servlet error:
D: omcatworklocalhost_opendata $ jsp. java: 56: Class org. apache. jsp. Connection not found.
Connection con = DriverManager. getConnection (url, "sa", "801208161 ");
^
An error occurred between lines: 1 and 7 in the jsp file:/opendata. jsp
Generated servlet error:
D: omcatworklocalhost_opendata $ jsp. java: 56: Undefined variable or class name: DriverManager
Connection con = DriverManager. getConnection (url, "sa", "801208161 ");
^
An error occurred between lines: 1 and 7 in the jsp file:/opendata. jsp