My Java Experience... latest code - critique

Ok, with help from you folks, I wrote some classes.  Basically they allow me
to select a file and output either HTML or XML.  Here is a generic servlet I
wrote using these classes.  They allow the user to select a library, file,
where statement, order statement, which machine to get the data from (we
have many in our network) and how to output the result (HTML or XML for
now).

I'm looking for critique here again.  If you have a question an need to see
source from one of my classes, just let me know.  

import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class JavaTest extends HttpServlet
{

  public void doGet(HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException
  {
    PrintWriter out=response.getWriter();

    String header = "Group";
    String library = "";
    String file = "";
    String sqlWhere = "";
    String sqlOrder = "";
    String databaseProperties = "";
    String output = "";
    FieldListFormatter listFormatter = new XMLFieldListFormatter();

    try
        {
          library=request.getParameterValues("library")[0].trim();
          file=request.getParameterValues("file")[0].trim();
          sqlWhere=request.getParameterValues("sqlWhere")[0].trim();
          sqlOrder=request.getParameterValues("sqlOrder")[0].trim();
        
databaseProperties=request.getParameterValues("machine")[0].trim();
          output=request.getParameterValues("output")[0].trim();
        }
        catch (Exception e)
        {
    }

    SQLDefinition controlSQL = new SQLDefinition(library + "." + file,
sqlWhere, sqlOrder);
    FieldTableDefinition myTable = new
FieldTableDefinition(databaseProperties, controlSQL);

    if (output.equals("HTML"))
    {
      response.setContentType("text/html");
      listFormatter = new HTMLFieldListFormatter();
      header = "table";

    } else {
      response.setContentType("text/xml");
    }

    out.println("<" + header + ">");

    for (int i = 0; i < myTable.size(); i++)
    {
      myTable.getFieldList(i).setFormatter(listFormatter);
      myTable.getFieldList(i).xmlWrapper="Data";
      out.println(myTable.getFieldList(i).toML());
    }

    out.println("</" + header + ">");

    out.close();
  }

  public void doPost(HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException
  {
    doGet(request, response);
  }

}
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