这是怎么回事

代码如下
<%@ page import="java.io.*"%> <%@ page import="java.sql.*"%>
<% String sno="11";
String sname="11";
String zzmm="11";
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String url="jdbc:odbc:yangjiyue";
Connection conn= DriverManager.getConnection(url,"gsmis","gsmis");
Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_UPDATABLE);
ResultSet rs=stmt.executeUpdate("insert into ZZ_SXKP (XH,XM,ZZMMM) Values (\'"+sno+"\',\'"+sname+"\',\'"+zzmm+"\')");
%>
但是错误如下
org.apache.jasper.JasperException: Unable to compile class for JSP

An error occurred at line: 3 in the jsp file: /solve/yang.jsp

Generated servlet error:
[javac] Compiling 1 source file

D:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\_\solve\yang_jsp.java:52: incompatible types
found : int
required: java.sql.ResultSet
ResultSet rs=stmt.executeUpdate("insert into ZZ_SXKP (XH,XM,ZZMMM) Values (\'"+sno+"\',\'"+sname+"\',\'"+zzmm+"\')");
^
1 error
怎么回事呢