Retriev values from database and display in a ComboBox

hi all,
i think the subject explains it all. how? currently iam using vectors which is giving me lots of problems and errors, whenever it adds to the combobox it adds the square braces as well example if the value in database is asrar then it will display [asrar], what is causing that? does anybody now any easier way??
asrar

please can someone help me
asrar

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Hi
What part is your biggest problem?? I am not experienced in getting data out of a database, but the way to get a variable amount of data to show in a drop down menu, i have just messed around with for some time and heres how i solved it... In my app, what i needed was, a initial empty drop down list, and then using input from a text-field, users could add elements to a Vector that was passed to a JComboBox. Heres how.
package jcombobox;
import java.awt.*;
import java.awt.event.*;
import java.util.Vector;
import javax.swing.*;
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            list.addElement(new SomeClass(input.getText()));
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package jcombobox;
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Retrieving values from Database in Excel Task Pane App

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>> My problem is that I'm not sure how I retrieve values from the database
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Problem in Retrieve Image from DB and display in the JSP page

Hi All,
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vishruta wrote:
<%
%>Using scriptlets is asking for trouble. Java code belongs in Java classes. Use a Servlet.
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hi,
data : count type i value 0.
data : Begin of itab occurs 0 ,
plan_version like hrhap-plan_version,
APPRAISAL_ID like hrhap-APPRAISAL_ID,
AP_START_DATE like hrhap-AP_START_DATE,
AP_END_DATE like hrhap-AP_END_DATE,
AP_STATUS like hrhap-AP_STATUS,
AP_STATUS_SUB like hrhap-AP_STATUS_SUB,
OBJ_DATE_SET like hrhap-OBJ_DATE_SET,
REVIEW_DATE_SET like hrhap-REVIEW_DATE_SET,
AP_DATE_SET like hrhap-AP_DATE_SET,
AP_DATE_EARLIEST like hrhap-AP_DATE_EARLIEST,
AP_DATE_LATEST like hrhap-AP_DATE_LATEST,
CHANGE_DATE like hrhap-CHANGE_DATE,
CHANGE_TIME like hrhap-CHANGE_TIME,
CHANGE_USER like hrhap-CHANGE_USER,
end of itab.
<b>select * from hrhap into corresponding fields of table itab.</b>
loop at itab.
write :/ itab-plan_version under 'plan_version',
itab-appraisal_id under 'Appraisal Id',
itab-AP_START_DATE under 'Start Date',
itab-AP_END_DATE under 'End date',
itab-AP_STATUS under 'Status',
itab-AP_STATUS_SUB under 'Substatus',
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itab-AP_DATE_SET under 'appraisal date',
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rgds
anver
if hlped mark points.

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2.bus
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hey u can solve this problem by using vector instead of array
here's the code
<%
Vector list=new Vector();
list.addElement("car");
list.addElement("bus");
list.addElement("lorry");
Vector logtype=new Vector();
logtype.addElement("car");
logtype.addElement("bus");
for(int i=0;i<list.size();i++)
     if(logtype.contains(list.elementAt(i)))
     { %>
          <%=list.elementAt(i)%><input type="checkbox" name="type" value="<%=list.elementAt(i)%>" checked>
     <%}
     else
     {%>
          <%=list.elementAt(i)%><input type="checkbox" name="type" value="<%=list.elementAt(i)%>" >
     <%}
%>

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I am using jdev 10.1.3 with ADF.
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If I am not clear, I have a jsp page which has account number, bill to and ship to fields.
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bye
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Going through the javaee tutorial is one sure way of accelerating your learning curve, as almost every basic you will need to get your job done is explaiined well in there. i have been using it to learn building enterprise application and is awesome good resource.
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java.sun.com/javaee/5/docs/tutorial/doc/

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Retrieve values from database

Hi,
one of the search form contains the select option for country , state and
distributor type.
the country drop down has 2 values - US and canada
the conditions needed to be satisfied are :
(1) if the country selected is US - then the states dropdown should only show the states that are associated with US in the table in the database(TABLE name is - "distributors")
and if country selected is Canada - then should show states in canada only
(2) if canada is selected in the country dropdown, the distributor type which has 2 values - stationary and automotive - should show only the stationary in the dropdown and not show the automotive
This is done with the LocateQueryServlet.java...can someone please tell me how this needs to be updates so that the above conditions are satisfied...
Attaching the code from LocateQueryServlet.java and the prolog.sql
--------------------------------------------------------------------------------------------------LocateQueryServlet.java
package com.dupont.refrigerants.distributorlocator;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.List;
import javax.ejb.CreateException;
import javax.naming.NamingException;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.proxicom.util.MiscEJBFunctions;
* This servlet displays a query form for locating distributors. It relies on
* the 'countries', 'states' and 'types' tables in the database to fill its
* forms. If a table is empty, it doesn't display the corresponding select
* (pulldown) widget. This only displays the form fragment of HTML, and should
* be included in a complete page, probably with JSP or the like.
* XXX Currently, the form is populated when the servlet is initialized, which
* is a hack because I don't remember the appropriate j2ee idiom.
* @web.servlet name="queryServlet" display-name="Distributor Locator Query
* Servlet" description="Servlet that gets a query form for finding
* distributors in a given region"
* @web.servlet-mapping url-pattern="/queryServlet"
public class LocateQueryServlet extends HttpServlet {
     * Abstract class for converting a java object into
     * an option element for an HTML select form widget.
     private abstract static class Object2Option {
          * Gets the default option at the top of the select.
          * To have no default, override this to return the
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          * @return <code>>option selected='true' value=''<-- Select One -->/option<</code>
          public String getDefault() {
               return "<option selected='true' value=''>-- Select One --</option>";
          * The option element that represents the given info object.
          * @param o the info object
          * @return an unselected HTML option element.
          abstract public String getOptionFor(Object o);
          * Helper method for generating a select option element
          * with the given un-encoded value and text.
          * @param value
          * unencoded string to be passed as the form
          * value when selected
          * @param text
          * unencoded string to be displayed in the select
          * box pulldown
          * @return the concatenated and appropriately escaped
          * option element
          protected static String getOptionWith(String value, String text) {
               return "<option value='" + Utilities.webify(value, false) + "'>"
                         + Utilities.webify(text, false) + "</option>";
     * Function object for generating 'Country' select box items.
     private static class Object2CountryOption extends Object2Option {
          * Converts a CountryInformation object into an appropriate
          * HTML option element.
          public String getOptionFor(Object o) {
               CountryInformation c = (CountryInformation) o;
               return getOptionWith(c.getCode(), c.getName());
     * Function object for generating 'Distributor Type' select box items.
     private static class Object2DistributorTypeOption extends Object2Option {
          * Converts a DistributorTypeInformation object into an appropriate
          * HTML option element.
          public String getOptionFor(Object o) {
               DistributorTypeInformation c = (DistributorTypeInformation) o;
               return getOptionWith(String.valueOf(c.getId()), c.getDescription());
     * Function object for generating 'State/Province' select box items.
     private static class Object2StateOption extends Object2Option {
          * Converts a StateInformation object into an appropriate
          * HTML option element.
          public String getOptionFor(Object o) {
               StateInformation c = (StateInformation) o;
               return getOptionWith(c.getCode(), c.getName());
     private String countries;
     private String states;
     private String types;
     * Constructs a simple locate query servlet.
     public LocateQueryServlet() {
          super();
     * Generates an HTML select form widget for the given list of values.
     * @param formName the name of the widget for the HTML name attribute
     * @param values the values to convert into a list
     * @param factory the method for converting each value into an option.
     * @return the complete 'select' element
     private String generateSelectFor(String formName, List values,
               Object2Option factory) {
          StringBuffer sb = new StringBuffer();
          sb.append("<select name='").append(Utilities.webify(formName, false)).append("'>");
          sb.append(factory.getDefault());
          for (Iterator iter = values.iterator(); iter.hasNext();) {
               sb.append(factory.getOptionFor(iter.next()));
          sb.append("</select>");
          return sb.toString();
     * Initializes the servlet. Actually results in some queries getting run.
     * @param config
     * @throws ServletException
     public void init(ServletConfig config) throws ServletException {
          try {
               DistributorDBABeanHome distBean = (DistributorDBABeanHome) MiscEJBFunctions.getBeanHomeInterface(null, null, Utilities.EJB_DISTRIBUTOR_DBA_NAME);
               DistributorDBABean dists = distBean.create();
               this.countries = this.generateSelectFor("country", dists.getCountries(),
                         new Object2CountryOption());
               this.states = this.generateSelectFor("state", dists.getStates(),
                         new Object2StateOption());
               this.types = this.generateSelectFor("type", dists.getDistributorTypes(),
                         new Object2DistributorTypeOption());
          } catch (NamingException e) {
               throw new ServletException("Lookup of "
                         + Utilities.EJB_DISTRIBUTOR_DBA_NAME + " failed", e);
          } catch (CreateException e) {
               throw new ServletException(
                         "Error while creating distributor session bean", e);
          } catch (java.rmi.RemoteException e) {
               throw new ServletException(
                         "Error while initializing distributor locator", e);
     * Executes the HTTP request and return the appropriate HTML form fragment.
     * @param request
     * @param response
     * @throws ServletException
     * @throws IOException
     protected void doGet(HttpServletRequest request,
               HttpServletResponse response) throws ServletException, IOException {
          PrintWriter out = response.getWriter();
          response.setContentType("text/html");
          String action = request.getParameter("action");
          if (action == null) {
               action = "where-to-buy-results";
          } else {
               action = Utilities.webify(action, false);
          // Open form and table elements.
          out.println("<form id='distributorLocator' action='" + action + "' method='get'>"
                              + "<table width='100%' border='0' cellpadding='4' cellspacing='0'>");
          // buffer row
          //out.println("<tr><td colspan='2'><hr width='65%' size='1' noshade></td></tr>");
          // 'Country' row
          out.println("<tr><td><div align='right' class='formSubHead'>Country:</div></td>"
                              + "<td>" + this.countries + "</td></tr>");
          // 'States' row
          out.println("<tr><td><div align='right' class='formSubHead'>State/Province:</div></td>"
                              + "<td>" + this.states + "</td></tr>");
          // 'Application' row
          out.println("<tr><td><div align='right' class='formSubHead'>Application:</div></td>");
          out.println("<td>" + this.types + "</td></tr>");
          // or row
          out.println("<tr><td><div align='right'></div></td><td><em><strong>or</strong></em></td></tr>");
          // zip code row
          out.println("<tr><td><div align='right' class='formSubHead'>Zip Code/Postal Code: </div></td>"
                              + "<td><input id='zip' name='zip' type='text' /></td></tr>");
          // buffer row
          out.println("<tr><td colspan='2'><hr width='65%' size='1' noshade></td></tr>");
          // submit row
          out.println("<tr><td> </td><td><input type='submit' value='Find' /></td></tr>");
          // end table and form
          out.println("</table></form>");
prolog.sql
SET DEFINE OFF;
CREATE SEQUENCE distributor_id_seq START WITH 1 INCREMENT BY 1 NOMAXVALUE;
CREATE TABLE countries (code CHAR(2), name VARCHAR(254),
     CONSTRAINT country_pk PRIMARY KEY(code));
CREATE TABLE states (code CHAR(5), name VARCHAR(254), country CHAR(2),
     CONSTRAINT state_pk PRIMARY KEY(code),
     CONSTRAINT fk_country FOREIGN KEY(country) REFERENCES countries(code));
CREATE TABLE distributorTypes (id INTEGER, name VARCHAR(254),
     CONSTRAINT distributorType_pk PRIMARY KEY(id));
CREATE TABLE distributors
     (id INTEGER,
     name VARCHAR(254),
     zip VARCHAR(12),
     country CHAR(2),
     state CHAR(5),
     city VARCHAR(63),
     address1 VARCHAR(254),
     address2 VARCHAR(254),
     fax VARCHAR(32),
     phone VARCHAR(32),
     managers VARCHAR(254),
     type INTEGER,
     email VARCHAR(254),
     url VARCHAR(254),
     CONSTRAINT distributor_pk PRIMARY KEY(id),
     CONSTRAINT fk_dist_country FOREIGN KEY(country) REFERENCES countries(code),
     CONSTRAINT fk_dist_state FOREIGN KEY(state) REFERENCES states(code),
     CONSTRAINT fk_dist_type FOREIGN KEY(type) REFERENCES distributorTypes(id));
CREATE TABLE statesApply (state CHAR(5), distributor INTEGER,
     CONSTRAINT fk_apply_state FOREIGN KEY(state) REFERENCES states(code),
     CONSTRAINT fk_apply_distributor FOREIGN KEY(distributor) REFERENCES distributors(id));
INSERT INTO
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INSERT INTO
          distributorTypes (id, name) VALUES (2, 'Air Conditioning - Automotive');
INSERT INTO
          countries (code, name) VALUES ('CA', 'Canada');
INSERT INTO
          countries (code, name) VALUES ('US', 'United States of America');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_AL', 'Alabama');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_KS', 'Kansas');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_ND', 'North Dakota');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_AK', 'Alaska');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_KY', 'Kentucky');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_MP', 'N. Mariana Islands');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_AS', 'American Samoa');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_LA', 'Louisiana');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_OH', 'Ohio');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_AZ', 'Arizona');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_ME', 'Maine');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_OK', 'Oklahoma');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_AR', 'Arkansas');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_MH', 'Marshall Islands');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_OR', 'Oregon');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_CA', 'California');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_MD', 'Maryland');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_PW', 'Palau');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_CO', 'Colorado');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_MA', 'Massachusetts');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_PA', 'Pennsylvania');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_CT', 'Connecticut');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_MI', 'Michigan');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_PR', 'Puerto Rico');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_DE', 'Deleware');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_MN', 'Minnesota');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_RI', 'Rhode Island');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_DC', 'District of Columbia');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_MS', 'Mississippi');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_SC', 'South Carolina');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_FM', 'FS Micronesia');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_MO', 'Missouri');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_SD', 'South Dakota');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_FL', 'Florida');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_MT', 'Montana');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_TN', 'Tennessee');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_GA', 'Georgia');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_NE', 'Nebraska');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_TX', 'Texas');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_GU', 'Guam');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_NV', 'Nevada');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_UT', 'Utah');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_HI', 'Hawaii');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_NH', 'New Hampshire');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_VT', 'Vermont');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_ID', 'Idaho');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_NJ', 'New Jersey');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_VI', 'Virgin Islands');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_IL', 'Illinois');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_NM', 'New Mexico');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_VA', 'Virginia');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_IN', 'Indiana');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_NY', 'New York');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_WA', 'Washington');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_IA', 'Iowa');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_NC', 'North Carolina');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_WV', 'West Virginia');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_WI', 'Wisconsin');
INSERT INTO
          states (country, code, name) VALUES ('US', 'US_WY', 'Wyoming');
INSERT INTO
          states (country, code, name) VALUES ('CA', 'CA_AB', 'Alberta');
INSERT INTO
          states (country, code, name) VALUES ('CA', 'CA_BC', 'British Columbia');
INSERT INTO
          states (country, code, name) VALUES ('CA', 'CA_MB', 'Manitoba');
INSERT INTO
          states (country, code, name) VALUES ('CA', 'CA_NB', 'New Brunswick');
INSERT INTO
          states (country, code, name) VALUES ('CA', 'CA_NL', 'Newfoundland and Labrador');
INSERT INTO
          states (country, code, name) VALUES ('CA', 'CA_NS', 'Nova Scotia');
INSERT INTO
          states (country, code, name) VALUES ('CA', 'CA_NT', 'Northwest Territories');
INSERT INTO
          states (country, code, name) VALUES ('CA', 'CA_NU', 'Nunavut');
INSERT INTO
          states (country, code, name) VALUES ('CA', 'CA_ON', 'Ontario');
INSERT INTO
          states (country, code, name) VALUES ('CA', 'CA_PE', 'Prince Edward Island');
INSERT INTO
          states (country, code, name) VALUES ('CA', 'CA_QC', 'Qu�bec');
INSERT INTO
          states (country, code, name) VALUES ('CA', 'CA_SK', 'Saskatchewan');
INSERT INTO
          states (country, code, name) VALUES ('CA', 'CA_YT', 'Yukon');
Any immediate help is truly appreciated.
Thanks in advance

I thank you for the link, it's something I've already done several times ....
actually this code tries to manage a key incremental, I am obliged to do that because I am in MS SQL Server and therefore what works for oracle does not work for SQL Server, which is why I want to do it manual, I also posted this in a previous post and I was asked to retrieve the field value by Code: Help please : dbsequence refresh on MS sql server
now admitting that it is not what I want to do and I have the following code:
if (it1.getValue () == null) (
Connection connection = ConnectionManager.getInstance (). GetConnection ();
Statement statement = connection.createStatement ();
ResultSet resultset = statement.executeQuery ("SELECT id FROM WHERE name = spider" it2.getValue + () + "");
while (resultSet.next ())
it1.setValue (resultSet.getInt (1));
BindingContainer getBindings bindings = ();
OperationBinding operationBinding bindings.getOperationBinding = ("Commit");
OperationBinding.execute Object result = ();
if (! operationBinding.getErrors (). isEmpty ()) (
return null;
else (
BindingContainer bindings2 getBindings = ();
OperationBinding operationBinding2 bindings2.getOperationBinding = ("Commit");
OperationBinding2.execute Object result = ();
if (! operationBinding2.getErrors (). isEmpty ()) (
return null;
What code ADF BC I will put in place of jdbc code

How to retrieve datas from database to dropdown list in jsp

hai.
please tell me how to retrieve a perticular field list from database to a drop down list using jsp. i am new to jsp. i am doing employee management system. in that i need to edit employee's details as like.
so that i want to display employee id's in a drop down list. i want to retrieve from database and display.
please help me in this .
advance thanks.

Hello friendz,
If tht is the i wud suggest if guyz can go wid AJAX...
try to make use of xmlHttp Object and generate a new dependent drop down by using a property from a bean->servlet->VIEW(FORM)
else save the form state in a session and then refersh it. once all in again.
i had a similar problem which i solved in the following way
Hi friend,
I had a similar situation and i tried to solve it by using XmlHttpRequest Object(used in AJAX).
U can checkout the below example just for further reference delete
UserForm.jsp:
==========
<head>
<script>
var xmlHttp
function showState(str)
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
alert ("Browser does not support HTTP Request")
return
var url="getState.jsp"
url=url+"?count="+str
url=url+"&sid="+Math.random()
xmlHttp.onreadystatechange=stateChange
xmlHttp.open("GET",url,true)
xmlHttp.send(null)
function stateChange()
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete"){
document.getElementById("state").innerHTML=xmlHttp.responseText
</head>
<body>
<select name='country' onchange="showState(this.value)">
<option value='india>india</option>
</select>
<br>
<div id='state'>
<select name='state' >
<option value='-1'>pickone</option>
</select>
</div>
</body>
getState.jsp
============
<%@page language="java" import ="java.util.Hashtable" import ="java.util.Set" %>
<%
String country=request.getParameter("count");
response.setContentType("text/html");
response.setHeader("Cache-Control","no-cache");
try{
Hashtable ht = (Hashtable)session.getAttribute("<ATTRIBUTE_NAME>");
String buffer="<select name='state'><option value='-1'>Pick One</option>";
Set s=ht.keySet();
Object keys[]=s.toArray();
int size=keys.length;
for(int i=0; i < size;i++){
buffer=buffer+"<option value='"+ht.get(keys).toString()+"'>"+ht.get(keys).toString()+"</option>";
buffer=buffer+"</select>";
response.getWriter().println(buffer);
catch(Exception exp){
response.getWriter().println(exp);
%>

Problem in retreiving from database and viewing it in browser--urgent

hai,
i have develped an application using swings where the mails received from client and reply posted will be pasted in JEditorPane. all the mails,query and reply will be stored in database.
then iam retrieving the mails from database and displaying it in browser using table data.(Just like forum). Iam using encodehtmltag function to omit the html tags that r present in the mail data.
when i display it in browser it extends a page horizontically. how to avoid this. how to word wrap. one of my friend asked me to set number of character to be displayed per line. i did that. but problem is i could see the word break . i have set 90 characters to be displayed per line. i dont want to break the word. for eg., if the end string of a line is regarding it is displayed like this---reg and then arding in next line. how to avoid this.
please help me iam breaking my head with this for past few days.

If the field is a Date in your database, you can use the ResultSet.getDate() method, which will return a java.sql.Date (which extends java.util.Date).
You can then use SimpleDateFormat to format it the way you like.
See the API doc for more details.

Retriev values from database and display in a ComboBox

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