<% 
     Connection con;
     Statement sql;
     ResultSet rs;
      
      try{
            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
            }
            catch ( ClassNotFoundException e)
            {}
     try{
          con=DriverManager.getConnection("jdbc.odbc;sun","panwei","");
          
          sql=con.createStatement();
                  
          rs=sql.executeQuery("select * from xuesheng");
        
          out.print("<table border=0>");
          out.print("<tr>");
               out.print("<th width=100>"+"xingming");
               out.print("<th width=100>"+"xuiehao");
               out.print("<th width=100>"+"danwei");
                     out.priont("</tr>");
          
          while(rs.next())
          { 
                       out.print("<tr>");
             out.print("<td>"+rs.getString(1)+"</td>");
             out.print("<td>"+ rs.getString(2)+"</td>");
             out.print("<td>"+ rs.getString(3)+"</td>");
             out.print("</tr>");    
                     }
            out.print("</table>");
            con.close();
        }
            catch(SQLException el){}
            
            %>

这段代码已运行总是有错误
    Generated servlet error:
    [javac] Since fork is true, ignoring compiler setting.
    [javac] Compiling 1 source file
    [javac] Since fork is true, ignoring compiler setting.
    [javac] D:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\_\shujuku_jsp.java:66: cannot resolve symbol
    [javac] symbol  : variable sql 
    [javac] location: class org.apache.jsp.shujuku_jsp
    [javac]           rs=sql.executeQuery("select * from xuesheng");
    [javac]                      ^
    [javac] 1 error