O que ha de errado Tomcat

type Exception report

message 

description The server encountered an internal error () that prevented it from fulfilling this request.

exception 

org.apache.jasper.JasperException: Unable to compile class for JSP: 

An error occurred at line: 13 in the jsp file: /index.jsp
Connection cannot be resolved to a type
10: 
11: <jsp:include page="login.jspf"/>
12: <%
13: Connection conexao = null;
14: Statement st = null;
15: ResultSet rs = null;
16: 


An error occurred at line: 14 in the jsp file: /index.jsp
Statement cannot be resolved to a type
11: <jsp:include page="login.jspf"/>
12: <%
13: Connection conexao = null;
14: Statement st = null;
15: ResultSet rs = null;
16: 
17: try{


An error occurred at line: 15 in the jsp file: /index.jsp
ResultSet cannot be resolved to a type
12: <%
13: Connection conexao = null;
14: Statement st = null;
15: ResultSet rs = null;
16: 
17: try{
18: 	String sqlSelec= "SELECT* FROM tabuser INNER JOIN tabmensagem ON [tabuser].[coduser]=[tabmensagem].[coduser];";


An error occurred at line: 20 in the jsp file: /index.jsp
DriverManager cannot be resolved
17: try{
18: 	String sqlSelec= "SELECT* FROM tabuser INNER JOIN tabmensagem ON [tabuser].[coduser]=[tabmensagem].[coduser];";
19: 	Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
20: 	conexao = DriverManager.getConnection("jdbc:odbc:dados");
21: 	st = conexao.createStatement();
22: 	rs = st.executeQuery(sqlSelec);
23: %>


Stacktrace:
	org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:93)
	org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
	org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:435)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:298)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:277)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:265)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:564)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:302)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)