Re: java certification

[blueads.com]

I believe the latest issue of "Java Pro" does a break down of what
certification is worth. I believe is was substantial $$$.

Tom K.

-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of John
Horan
Sent: Thursday, June 01, 2000 10:24 AM
To: [EMAIL PROTECTED]
Subject: Re: java certification


Sanjay,

I took the Sun Certifiied Programmer for Java 1.2 exam.

Marketvalue-wise I'm not sure what it gives me - I suspect not a big deal,
but then again everything helps :-)

For my own personal benefit however I did find it very helpful - I studied
for it as I was working with Java for the first time and it filled gaps in
my knowledge (hadn't previously needed to use the java.io or the java.awt
packages for instance) and forced me to learn the basics of the language
thoroughly.

So I thought it was worthwhile. Also, from a market value viewpoint if I
became a certified Developer and then a certified Architect I'd say that is
quite an impressive thing to have on your cv - I notice a lot of the
published Java writers have such a qualification

J

-Original Message-
From:   Sanjay V Mistry [SMTP:[EMAIL PROTECTED]]
Sent:   01 June 2000 05:04
To: [EMAIL PROTECTED]
Subject:java certification

hi guys,
this is little off-bit topic, but I wanna know something about java
certification exam.

what is advantage of giving that exam ?
what is the market value of it ?
does it really helps ?
Can someone throw more light on this ?

Thanks.
Sanjay Mistry



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Re: Applet to Servlet Communication ..please help

[blueads.com]

Hi Ram,

Pretty much the "Bible" for servlet programming is Jason Hunter's book Java
Servlet Programming, published by O'Reilly. You will hear this book referred
to "a-lot" on this list. It has some very good examples, including Applet to
Servlet communication.

Tom K.


-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of ram
muna
Sent: Sunday, May 28, 2000 10:03 AM
To: [EMAIL PROTECTED]
Subject: Applet to Servlet Communication ..please help


Hi all,
   I have started learning servlets recently. Can
anyone please give me a simple example of Applet to
Servlet communication. If you can tell me the source,
book, or web site which can help me understand this
process, I will greatly appreciate your help.

Thanking you all in advance,
Ram

__
Do You Yahoo!?
Kick off your party with Yahoo! Invites.
http://invites.yahoo.com/

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Re: Help please

[blueads.com]

Yes it is but why? Everything you need is included with the Weblogic
"application server". You don't need Apache or anything else You don't need
anything except perhaps to download a database driver. Check out there
website.

Tom K.

-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of K
Ramesh
Sent: Saturday, May 27, 2000 7:31 AM
To: [EMAIL PROTECTED]
Subject: Help please


Hi everybody

This is a offtopic question but i am sure lots will be interested. I just
installed WEblogic application server in my machine. Now, how do i plug it
with
the webserver. lets say that i want weblogic to be plugged with apache. is
it
possible?

Enlighten me

Thanks
K Ramesh

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Re: Query on SQL server

[blueads.com]

Hello S.S.Rajagopal,

Since you are shifting from Access (for development only) to MS-SQL-Server-7
(a real database) I'm assumming you're also shifting from the odbc/jdbc
bridge to a straight JDBC Driver (type vary from 1-4). In a nut shell,
connection pooling is simply software that allocates connections to your
database. When the connection is no longer needed it relinquishes it back to
the pool to be used again. Several free ones are available. Not so with a
JDBC driver for MS-SQL-7, expect to pay. When you refer to locking, I assume
you mean row level locking??? This is internal to your database and probably
doesn't have anything to do with your problem. I would suggest refering to
Jason Hunters book to learn more about connection pooling.

Tom K.


-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
SSRAJAGOPAL
Sent: Sunday, May 14, 2000 11:22 PM
To: [EMAIL PROTECTED]
Subject: Re: Query on SQL server


Hi,
I have already tried closing the result set  connection but met with
the same problem.Can some one give some info on locking and connection
pooling in SQL server
Regards,
S.S.Rajagopal

On Fri, 12 May 2000, blueads.com wrote:

 Just a guess, but it sounds like your not closing your resultset or
 connection. Have you thought about going with JDBC and a connection pool?

 Tom Kochanowicz


 -Original Message-
 From: A mailing list for discussion about Sun Microsystem's Java Servlet
 API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
 SSRAJAGOPAL
 Sent: Thursday, May 11, 2000 10:13 PM
 To: [EMAIL PROTECTED]
 Subject: Query on SQL server


 Hi all,
I  am doing my project  using servlets .  Recently I  shifted my
 application from MS-Access to SQL Server 7.0  .  When i try to access the
 application and run any of the servlets  it gives me the following error

 " Connection is busy with results of another  hstmt")ODBC -HY

 Has anyone encountered this problem . ?If so  what  should  be done to
 remove this ?.

 Note : I am using  IIS and Servlet Exec utility  ro run my servlets

 Thanx in advance

 Regards,
 S.S.Rajagopal


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Re: Query on SQL server

[blueads.com]

Just a guess, but it sounds like your not closing your resultset or
connection. Have you thought about going with JDBC and a connection pool?

Tom Kochanowicz


-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
SSRAJAGOPAL
Sent: Thursday, May 11, 2000 10:13 PM
To: [EMAIL PROTECTED]
Subject: Query on SQL server


Hi all,
   I  am doing my project  using servlets .  Recently I  shifted my
application from MS-Access to SQL Server 7.0  .  When i try to access the
application and run any of the servlets  it gives me the following error

" Connection is busy with results of another  hstmt")ODBC -HY

Has anyone encountered this problem . ?If so  what  should  be done to
remove this ?.

Note : I am using  IIS and Servlet Exec utility  ro run my servlets

Thanx in advance

Regards,
S.S.Rajagopal

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Re: Space Character In URL

[blueads.com]

Hi Danny,

The the URL encoder from the java.net package was the solution. Got that
answer several days ago.

Tom K.


-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of Danny
Rubis
Sent: Wednesday, May 10, 2000 5:12 PM
To: [EMAIL PROTECTED]
Subject: Re: Space Character In URL


Hey!

I am coming in late to this discussion.

Is there a reason why you can't use the URL encoder
from the java.net package?

Sans adieu,
Danny Rubis

"blueads.com" wrote:

 - I am running into the same problem as another poster had with spaces in
a
 URL. I have tried replacing the space with a '+' sign using the code
below.
 This worked fine with Internet Explorer but Not with Netscape.

 // String phrase needs '+' signs between spaces for http links.

 int length = phrase.length();
 String temp = phrase;
 char linkPhrase[] = temp.toCharArray();

 for (int i = 0; i  length; i++) {
 if(linkPhrase[i] == ' '){
 linkPhrase[i] = '+';
 }
 }

 - Someone suggested that using %20 works. How would I implement it based
on
 the sample code above?

 Thanks,

 Tom K.


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Space Character In URL

[blueads.com]

- I am running into the same problem as another poster had with spaces in a
URL. I have tried replacing the space with a '+' sign using the code below.
This worked fine with Internet Explorer but Not with Netscape.

// String phrase needs '+' signs between spaces for http links.

int length = phrase.length();
String temp = phrase;
char linkPhrase[] = temp.toCharArray();

for (int i = 0; i  length; i++) {
if(linkPhrase[i] == ' '){
linkPhrase[i] = '+';
}
}

- Someone suggested that using %20 works. How would I implement it based on
the sample code above?

Thanks,

Tom K.

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Printing through servlet?

[blueads.com]

I would like to have a servlet print a formatted page. Is this possible
through the LPT1 port?  Any examples appreciated.

Tom K.

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Re: Printing through servlet?

[blueads.com]

I will check it out, thanks.

Tom K.

-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
P.Yesudason
Sent: Friday, April 28, 2000 6:46 AM
To: [EMAIL PROTECTED]
Subject: Re: Printing through servlet?


In java we have a class called printerJob , that will do it for you.
Go thru it ..

-Yesudason P

"blueads.com" wrote:

 I would like to have a servlet print a formatted page. Is this possible
 through the LPT1 port?  Any examples appreciated.

 Tom K.


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--
I am free and have a destination too far,
   I will keep flying.

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Re: JDBC-ODBC

[blueads.com]

rs returns a boolean true / false, so if there is more data it returns a
true, if not it returns a false. Opps...Sorry my name is Tom not Zulfi :-)

-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
P.Yesudason
Sent: Wednesday, April 26, 2000 12:56 AM
To: [EMAIL PROTECTED]
Subject: Re: JDBC-ODBC


Zulfi,
If rs is null ., what will happen?
Yesudas

zulfi wrote:

 if(rs.next())
 {
 data in resultset...
 }
 else
 no data...

 thanx
 zulfi

 - Original Message -
 From: Pavan Sulibhavi [EMAIL PROTECTED]
 To: [EMAIL PROTECTED]
 Sent: Wednesday, April 26, 2000 12:11 PM
 Subject: JDBC-ODBC

  Hi,
  I'm getting the invalid cursor state error message (SQLException). well,
  this is because the returned ResultSet contains no data, and i'm trying
to
  access it. How to find out whether the ResultSet  returned by method -
  executeQuery(query) contains any data at all ??
 
  PLEASE reply as soon as possible..
 
  thanks a lot!
  Pavan
 
 

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Re: SQL SERVER 7.0 Problem !!!!!!!!!!!!!!!

[blueads.com]

Hi lalith,

Rather than use the jdbc/odbc bridge you can use a jdbc driver and set it
to match the port of your database. There are several types and brands
available. Type-1 through type-4 depending on your needs and budget. There
is a URL on the SUN site that has a list of driver manufactuers, perhaps
someone out there can send you the URL.

Tom Kochanowicz


-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
Lalith Jayaweera
Sent: Monday, April 24, 2000 8:31 AM
To: [EMAIL PROTECTED]
Subject: SQL SERVER 7.0 Problem !!!


Hi,
  Rather than connecting through a ODBC data source ; How can we connect
through it's port (1433). What is the code behind that, what is the driver I
should use.

Thanks in Advance
lalith

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Missing email link

[blueads.com]

I have developed a servlet that kicks of every night and goes through a
database looking for matches to input a user has put in. It then generates
an email message and sends them the link where to find what they are looking
for. It works fine in IE but not in Netscape 4.5. The link comes back like
this http://www.mysite.com/search?SearchWord=tools
+as+wellDateId=ClassifiedAd=SearchByWord (Note: there is NO
spaces the between string.)When is should come back as
http://www.mysite.com/search?SearchWord=tools+as+wellDateId=Cl
assifiedAd=SearchByWord Does anyone know a fix for this?

Thanks

Tom K.

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Re: Are servlets being used in large sites ???

[blueads.com]

Just curious Joanquin, You work for IBM. Doesn't your company sell
WebSphere? I maybe going out on a limb here, but don't they do enterprise
applications? :-) Not to be a smart a-- here. I know Delta Airlines uses
servlets, Amazon.com uses some servlets and EJB.

Sincerely,

Tom Kochanowicz


-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
Joaquin Rapela
Sent: Monday, April 17, 2000 2:20 PM
To: [EMAIL PROTECTED]
Subject: Are servlets being used in large sites ???


Hello,

Can anybody send me a listing of sites using servlet technology. My group
is evaluating whether to use servlets or CGI's. I have found several old
postings about the advantages/disadvantages of each technology. We would
like to browse sites that are successfully using servlet technology.

Any help will be greatly appreciated, Joaquin

Joaquin Rapela
Staff Software Engineer
IBM Almaden Research Center

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Re: checking for null in a doPost method

[blueads.com]

Hi Stephen,

I noted there is not a space between the pQ2="", so maybe put pQ2=" " or
pQ2=' ' where a single quotation mark denotes a char space. The difference
between == and .equals() should not matter since you are working with a
String A.K.A. an Object.

Tom Kochanowicz

-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
Lambert, Stephen : CO IR
Sent: Monday, April 17, 2000 5:40 PM
To: [EMAIL PROTECTED]
Subject: checking for null in a doPost method


I'm trying to pass blanks for a null into my db from an html form.
Code as follows:

String pQ2 = request.getParameter("check2");
if  (pQ2.equals("null") {pQ2="";
}

I end up with the error "java.lang.NullPointerException".
Even though when I display the variable pQ2,  it gives me "null"(no quotes)
using:

out.println(pQ2);

Anybody know how to check for null data from a doPost method?
Thanks,
Stephen.

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Re: checking for null in a doPost method

[blueads.com]

I stand corrected,
However, I believe that there need to be a space between the quotes if
null.

Tom K.

-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of Milt
Epstein
Sent: Monday, April 17, 2000 8:19 PM
To: [EMAIL PROTECTED]
Subject: Re: checking for null in a doPost method


On Mon, 17 Apr 2000, blueads.com wrote:

 Hi Stephen,

 I noted there is not a space between the pQ2="", so maybe put pQ2="
 " or pQ2=' ' where a single quotation mark denotes a char space. The
 difference between == and .equals() should not matter since you are
 working with a String A.K.A. an Object.

I hate to respond to such an off-topic post, but this response has
some serious misinformation.  There is a *huge* difference between ==
and .equals(), and that in fact is causing the problem here, as a
couple of other posters have pointed out.  Basically, using .equals()
accesses a method of an object, and if that object is null, voila,
NullPointerException.  You want to check if it is == null, i.e. if it
doesn't refer to anything.

There is a bit of confusion added here by the fact that a null String
object prints out as "null" (no strings), which I'm not sure was the
greatest decision in the world.


 -Original Message-
 From: A mailing list for discussion about Sun Microsystem's Java Servlet
 API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
 Lambert, Stephen : CO IR
 Sent: Monday, April 17, 2000 5:40 PM
 To: [EMAIL PROTECTED]
 Subject: checking for null in a doPost method


 I'm trying to pass blanks for a null into my db from an html form.
 Code as follows:

 String pQ2 = request.getParameter("check2");
 if  (pQ2.equals("null") {pQ2="";
 }

 I end up with the error "java.lang.NullPointerException".
 Even though when I display the variable pQ2,  it gives me "null"(no
quotes)
 using:

 out.println(pQ2);

 Anybody know how to check for null data from a doPost method?
 Thanks,
 Stephen.

Milt Epstein
Research Programmer
Software/Systems Development Group
Computing and Communications Services Office (CCSO)
University of Illinois at Urbana-Champaign (UIUC)
[EMAIL PROTECTED]

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Re: Timing in Servlets

[blueads.com]

Hi Krishnan,

What you may consider doing is using the calender class and using the
SimpleDateFormat() with it as an easy method to calculate the start and end
time that the user has spent being logged in. When the user logs in you
would start that time and when the user logs off you would store (and maybe
do a calculationg to determine time spent logged in). Of course this only
works if the user logs off. Then when the user logs off you would update
your database (as you stated in your post).

calendar = Calendar.getInstance();
formatter = new SimpleDateFormat("DDDHHmmssSSS"); // Many formats available.

Sincerely,

Tom Kochanowicz


-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
Krishnan Srinivasan
Sent: Sunday, April 16, 2000 4:01 PM
To: [EMAIL PROTECTED]
Subject: Timing in Servlets


Hi,
   How do I keep track of the user timing from the logon to the logoff.Do I
start a timer when the session starts for the user and insert the timer when
he logs off and update the database(Oracle)?.
I would like to store this infrmation in a log file for the administrator to
see at the end of the day.

This is what I am storing eg.

UserName, IpAddress,RemostHost,TimeSpent(min),No.Times R/W to the DB

ABC  123.453.34.345usa.gov.org   435

DEF   132.345.24.234   microsoft.com 323

The Last Column of the READ/WRITE. I thought of keeping a counter everytime
a button which calls a servelt is going to be clicked and always add that to
the session table .
I guess the session is really useful here
Let me know.

Thanks
Krishnan
Ps* Has anyone used the verisign for user authentication in Java
Webserver2.0? I am trying to ..


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Hiding a link on html generated page.

[blueads.com]

I have a servlet that generates an html page with an underlined link on it.
For example: http://somewhere/12345 I would like to hide this link from
appearing at the bottom of the browser when the cursor goes over the link
and it turns into a hand. Is there a way to do it?

Tom K.

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Re: Servlet - Cookie Problem

[blueads.com]

Hi Jochen,

Since you are sending it secure, you might try:
 .setSecure(true);  // Change to true when using SSL.

Tom Kochanowicz

-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
Jochen Vastmans
Sent: Friday, April 14, 2000 7:41 AM
To: [EMAIL PROTECTED]
Subject: Servlet - Cookie Problem


Hello,

I'm using JavaWebServer 2.0, and I'm trying to send cookies to the client,
but I can't find them, not
when I'm using NN(under linux .netscape/cookies) not with
IE...(windows/cookies)
The cookies are send when the webserver is in secure mode...

This is some code from servlets...
Can someone tell me what is wrong or what the problem is?

Thanks,
Best Regards,

Jochen Vastmans

e-mail: [EMAIL PROTECTED]

// SENDING COOKIES
cookies = req.getCookies();
cust = (Customer)cs.getCustomer();
long cid = cust.getID();
String id = String.valueOf(cid);

if(cookies != null){

  for(int i=0;icookies.length;i++){
 if(cookies[i].getName().equals("CID")){
  customerId = (Cookie)cookies[i].clone();
  customerId.setValue(id);
  customerId.setComment("Kuleuven Online Store");
  customerId.setDomain(HOST);
  customerId.setMaxAge(1000);
  //customerId.setSecure(true);
 }
  }
}

if(customerId == null){
 customerId = new Cookie("CID",id);
 customerId.setValue(id);
 customerId.setComment("Kuleuven Online Store");
 customerId.setDomain(HOST);
 customerId.setMaxAge(1000);
 //customerId.setSecure(true);
}
res.addCookie(customerId);

// RECIEVING COOKIES
cookies = req.getCookies();
if(cookies != null){
  for(int i=0;icookies.length;i++){
 if(cookies[i].getName().equals("CID")){
  c = (Cookie)cookies[i].clone();

  try{
  cid = (long) Integer.valueOf(c.getValue()).intValue();
  break;
  }
  catch(NumberFormatException nfe){}
 }
  }
}

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Re: Java Security

[blueads.com]

Hi Krishnan,

Getting a seccure link involves several factor. The first one is setting up
a login and password, you can use something like the code below (borrowed
from another user on this list, Credit goes to Abhishek Sharan). Secondly
you must make sure that your server support Secure Socket Layer (either 64
bit exportable or 128-bit U.S.A). Then you use a certificate. Check out
www.verisign.com or www.Thawrte.com for specifics. You use a different
socket for SSL and your links always start with https://  Setting up you SSL
depends on your servlet engine so check your documentation. Hope this sheds
some light on the subject.

Sincerely Tom Kochanowicz


/code begins

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

public class Verify extends HttpServlet {
public void doPost(HttpServletRequest req, HttpServletResponse res)
  throws ServletException, IOException {

Connection con = null;
Statement stmt = null;
ResultSet rs = null;
int verified = 0;
res.setContentType("text/html");
PrintWriter out = res.getWriter();
String userName = req.getParameter("txtUserName");
String password = req.getParameter("txtPassword");

try {
// Initialize driver...
Class.forName(database driver);
// Connect...
con = DriverManager.getConnection(database connection with
username
and password);

stmt = con.createStatement();
rs = stmt.executeQuery("SELECT USERNAME, PASSWORD FROM
JOJOUSERS"
   + " WHERE USERNAME = '" + userName +
"'");

// HTML Header...
out.println("HTMLHEADTITLEVerification Result"
+ "/TITLE/HEAD");
out.println("BODY");

while(rs.next()) {
if(rs.getString("password").trim().equals(password.trim()))
{
verified = 1;
}
}
if(verified == 1) {
out.println("User verified: Access Granted");
} else {
out.println("Access Denied...BRUser not found or "
+ "Incorrect Password!");
}
// HTML footer...
out.println("/BODY/HTML");
}
catch(ClassNotFoundException e) {
out.println("Couldn't load database driver: " + e.getMessage());
}

catch(SQLException e) {
out.println("SQLException caught: " + e.getMessage());
}
finally {
try {
if (con != null) con.close();
}
catch (SQLException ignored) { }
}
}
public String getServletInfo() {
return "Login verification sample... ";
}
}

// end of the code

-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
Krishnan Srinivasan
Sent: Friday, April 14, 2000 2:53 PM
To: [EMAIL PROTECTED]
Subject: Re: Java Security


Hi Mr.Tom Kochanowicz,
 I read one of your replies and I saw the "SSL" word. I was wondering if
you could throw light on setting up a secure link during the LOGIN of my
servlet. When people log in my site I want to give them an option like some
websites do "click here to logon for a secure site" Is this done using JSSE
? (java security which has the HTTP for SSL).

Thanks
SK
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Re: Jdbc driver for Apache Jserv on Redhat Linux

[blueads.com]

BEA WebLogic has a real good one, but it's not cheep.

Tom Kochanowicz


-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
Suresh Sharma
Sent: Friday, April 14, 2000 7:25 PM
To: [EMAIL PROTECTED]
Subject: Jdbc driver for Apache Jserv on Redhat Linux


Hi all.
I need JDBC drivers for MS SQL and Oracle 8i for my Apache Jserv web server
which is instslled on my Linux Redhat 6.1 machine.Any suggestion  will be of
great help.Thank you.
Suresh

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Re: Db connection crashes servlet server

[blueads.com]

Barranger,

Try something like.

while(dataResultSet.next()){
if (result.getString("Password").trim()){
return true;
}
else return false;
}

Tom Kochanowicz


-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
Barranger Ridler
Sent: Saturday, April 08, 2000 3:09 PM
To: [EMAIL PROTECTED]
Subject: Db connection crashes servlet server


Hello there,

I have a simple servlet that connects to an access database to check
the
name and password of a user.  While it does check this correctly, the server
will crash a few minutes later (Possibly when the distroy() method is
called?? which has no code).  Anyways any help would definately help.
Here's the code that is used to connect.  Sorry about the length

Barranger

/**
 * Check the User Name and Password
 */
public boolean login(String name, String pwd)
{
//Set the Variables to connect to the Database
String URL = "jdbc:odbc:Mail";
String username = "";
String password = "";

//Try to load the appropriate Driver
try
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
}
catch (Exception e)
{
return false;
}

//Declare the Objects
Statement  stmt = null;
Connection con  = null;

//Create the Objects
try
{
con = DriverManager.getConnection (URL, username, password);
stmt = con.createStatement();
}
catch (Exception e)
{
return false;
}

//Declare and Create the ResultSet object
try
{
ResultSet result = stmt.executeQuery
(
"SELECT * FROM user WHERE user_name
= '" + name +
"' AND user_password = '" + pwd +
"';"
);

//If there are any records then the user exists
if(result.next())
{
return true;
}
else
{
return false;
}
}
catch (Exception e)
{
return false;
}
}

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Re: Pure jdbc drivers

[blueads.com]

I don't know about free, but I can tell you that WebLogic WebExpress has
type-4 (pure java) drivers for all leading databases and a great connection
pool, servlet engine, and html server, ALL for the price of what some places
I've tried want for just the drivers. I use it for my site with MS-SQL-7

Tom Kochanowicz

-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
Patrick Clark
Sent: Thursday, April 06, 2000 10:02 PM
To: [EMAIL PROTECTED]
Subject: Re: Pure jdbc drivers


I am on the lookout for a pure jdbc driver as well (type 4).  I need one for
MS SQL7.  Preferably one that is free.

thanks in advance

From: Papaya Head [EMAIL PROTECTED]
Reply-To: "A mailing list for discussion about Sun Microsystem's Java
Servlet API Technology." [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: Re: Pure jdbc drivers
Date: Thu, 6 Apr 2000 21:06:50 CDT

what kind of DBMS are you using?

From: RAJA [EMAIL PROTECTED]
Hi all,
  I am on the look out for  pure jdbc drivers (type 4  )  .
Currently I am  using  jswdk2.0   which has   type1  driver.  Can  any
one tell me  whether   they  can  be down loaded from a site.

Thanx in advance.


Regards,
S.S.Rajagopal

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Re: Handling large records

[blueads.com]

Hi Eric,
Look at Karl Mosses book "Java Servlets", there is a good example of what
you are trying to do in there (somewhere). You need support for JDBC-2 if
you want to do the BACK button using the previous() method. If you don't
have JDBC 2 you can use javascript putting code in like below which puts a
back button in:
outputToBrowser.println("div align=\"right\"INPUT TYPE=\"button\"
VALUE=\"Back\" ONCLICK=\"history.go(-1)\"");

Tom Kochanowicz


-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of Eric
Noriega
Sent: Friday, April 07, 2000 2:08 PM
To: [EMAIL PROTECTED]
Subject: Re: Handling large records


You can use SQL cursors if the DB supports them, and if the jdbc
drivers support them.  This requires that you hold the DB connection open
for long periods of time though, and is usually avoided.  Another way is
to fetch and cache the results on the servlet server.  Both have their
down sides.


On Wed, 5 Apr 2000, Umashankar Balasubramanian wrote:

 I get a huge number of records (in thousands) when I
 issue query from a servelet. Presently I pump all this
 info. to the browser and it is very slow.

 I want to implement prev/next buttons on the browser
 so that only a set of records is fetched from the
 servlet.

 What changes need to be done on the servlet (I have
 the constraint of not issuing the query more than
 once)

 Regards,
 Uma

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Re: Sending anonymous email

[blueads.com]

Pretty close Danny,
I've been looking at other sites that have anonymous sendmails and it looks
like they are using a key field of the database record and when you click on
the link it sends the parameter to a servlet (or cgi) which looks up the
email address that corelates with the key field and brings up a servlet
(cgi) generated html page for some one to type there email into. The link
below is an example of what I am trying to do (The part that says "reply to
ad") when I mean anonymous email.
http://www.discoveromaha.com/cgi-bin/freecls/freecls.cgi?db=generalwebsite=
session_key=search_and_display_db_button=onresults_format=longdb_id=3058
query=retrievalcategory=Auto+Parts

Tom K.

Subject: Re: Sending anonymous email
Hey!

One way this can be done, if I interpret your question correctly,  you can
set up
servlet
properties, either by fussing with the servlets.properties file or use you
servlet
engine's administration applet and add email addresses aliases like this:

Johnny[EMAIL PROTECTED]
Janie[EMAIL PROTECTED]

Then you can send Johnny or Janie as parameters and no one will know the
E-address.

Am I on track with your question?

Sans adieu,
Danny Rubis

"blueads.com" wrote:

 I noted at some sites instead of using mailto:[EMAIL PROTECTED]
they have a
 link that is underlined and brings up a form with the recipients email
kept
 anonymous so that the email collectors don't Spam them. I already have a
 servlet that a user can fill in to send an anonymous email. What I would
 like is to have a way of passing an email address to the servlet by simply
 clicking on a link that would NOT identify the recipient but pass there
 email to my email form servlet. Any ideas? (The only option I can think of
 is a query to the database bringing up the recipients email address and
 passing it to the servlet).

 Sincerely,

 Tom K.


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Sending anonymous email

[blueads.com]

I noted at some sites instead of using mailto:[EMAIL PROTECTED] they have a
link that is underlined and brings up a form with the recipients email kept
anonymous so that the email collectors don't Spam them. I already have a
servlet that a user can fill in to send an anonymous email. What I would
like is to have a way of passing an email address to the servlet by simply
clicking on a link that would NOT identify the recipient but pass there
email to my email form servlet. Any ideas? (The only option I can think of
is a query to the database bringing up the recipients email address and
passing it to the servlet).

Sincerely,

Tom K.

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Re: Executing a servlet at a Certain Time

[blueads.com]

Title: RE: Executing a servlet at a Certain Time



The 
idea of running an SQL job sounds O.K. I need to check this option (if 
possible)using MS-SQL-Server-7

  -Original Message-From: A mailing list for 
  discussion about Sun Microsystem's Java Servlet API Technology. 
  [mailto:[EMAIL PROTECTED]]On Behalf Of Jay 
  BakerSent: Friday, March 31, 2000 9:30 AMTo: 
  [EMAIL PROTECTED]Subject: Re: Executing a servlet at a 
  Certain Time
  Well, there is no way to not have SOMETHING running and be 
  able to execute ANYTHING at some scheduled time, short of training a monkey to 
  hit the enter key when the big hand is on the 12 and the little hand is on the 
  9. 
  Whatever you do, there is going to be a sleep() involved one 
  way or another. You could run a SQL job and piggy-back on that service, doing 
  away with the servlet altogether. 
  -- Jay 
  -Original Message- From: 
  blueads.com [mailto:[EMAIL PROTECTED]] 
  Sent: Thursday, March 30, 2000 11:39 PM To: [EMAIL PROTECTED] Subject: 
  Executing a servlet at a Certain Time 
   I am using NT on a 
  weblogic 4.5.1 server. 
  - I would like to execute a servlet that does a database 
  update once a day. I would like to do this with out 
  having a sleep() or while loop active. In other words, 
  I want to eat as little cpu time as possible. I know this topic 
  was brought up before, with answers suggesting what I don't 
  want to do. 
  Does anyone have a good solution to this? 
  Sincerely, 
  Tom Kochanoiwcz 
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Re: Executing a servlet at a Certain Time

[blueads.com]

Grant,
Thanks for the "idea" of a solution. The "AT" command sounds like a crontab
in UNIX. Does anyone on the list know if it is possible (have an example) to
execute a servlet with the "AT" command?

Sincerely,

Tom Kochanowicz



-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of Grant
Cullen
Sent: Friday, March 31, 2000 9:17 AM
To: [EMAIL PROTECTED]
Subject: Re: Executing a servlet at a Certain Time


If the servlet can be invoked from a command line, use the NT "AT" command.
This will allow you to run on a schedule.

Grant Cullen
UNIX System Admin
[EMAIL PROTECTED]
416-935-6558


-Original Message-
From: blueads.com [mailto:[EMAIL PROTECTED]]
Sent: Friday, March 31, 2000 0:39
To: [EMAIL PROTECTED]
Subject: Executing a servlet at a Certain Time


I am using NT on a weblogic 4.5.1 server.

- I would like to execute a servlet that does a database update once a day.
I would like to do this with out having a sleep() or while loop active. In
other words, I want to eat as little cpu time as possible. I know this topic
was brought up before, with answers suggesting what I don't want to do.

Does anyone have a good solution to this?

Sincerely,

Tom Kochanoiwcz

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Invoking a servlet from main()

[blueads.com]

Is there a way to invoke a servlet from mail?

e.g. public static void main(String args[]){

myServlet new = myServlet();
// Then call doPost(), doGet() or service()
}

I know it's an od question, but It is for a special need.

Tom K.

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Re: Invoking a servlet from main()

[blueads.com]

I meant main() not mail.

-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
blueads.com
Sent: Friday, March 31, 2000 2:47 PM
To: [EMAIL PROTECTED]
Subject: Invoking a servlet from main()


Is there a way to invoke a servlet from mail?

e.g. public static void main(String args[]){

myServlet new = myServlet();
// Then call doPost(), doGet() or service()
}

I know it's an od question, but It is for a special need.

Tom K.

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Re: Executing a servlet at a Certain Time

[blueads.com]

Thanks Craig,

The example is just what I needed!

Sincerely,

Tom Kochanowicz


-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of Craig
R. McClanahan
Sent: Friday, March 31, 2000 2:50 PM
To: [EMAIL PROTECTED]
Subject: Re: Executing a servlet at a Certain Time


"blueads.com" wrote:

 Grant,
 Thanks for the "idea" of a solution. The "AT" command sounds like
a crontab
 in UNIX. Does anyone on the list know if it is possible (have an example)
to
 execute a servlet with the "AT" command?


This is actually pretty easy, thanks to the java.net.URLConnection class.
You can just
write a little Java application that performs a request to the appropriate
URL to
trigger the action you want.

There is example code for using this class in the Java Language Tutorial at
http://java.sun.com/docs/books/tutorial, in the networking trail.

Craig McClanahan

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Executing a servlet at a Certain Time

[blueads.com]

I am using NT on a weblogic 4.5.1 server.

- I would like to execute a servlet that does a database update once a day.
I would like to do this with out having a sleep() or while loop active. In
other words, I want to eat as little cpu time as possible. I know this topic
was brought up before, with answers suggesting what I don't want to do.

Does anyone have a good solution to this?

Sincerely,

Tom Kochanoiwcz

___
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SQL/Servlet Question

[blueads.com]

In my servlet, I am doing a query of one table bringing back the data with
the method dataResultSet1.getString() then using what I get back to look for
a match in another table using the sql LIKE syntax. I just want to count the
matches from my first table that match my second table. I interate through
them using an outer and innner while statement.
- Should I be using sql COUNT and if so, how do I get the count into a
variable I can use in my servlet?
- What other options do I have?

Sincerely,

Tom Kochanowicz


Here is what I have so far

// Outer loop checks for email  phrase.
while(dataResultSet1.next()){

//if(dataResultSet1.getString("Email").trim().equals("[EMAIL PROTECTED]
t")){

//System.out.println("THE PHRASE IS " + 
dataResultSet1.getString("Phrase").trim());
String phrase = dataResultSet1.getString("Phrase").trim();
String email = dataResultSet1.getString("Email").trim();

// Inner loop checks if the Phrase found above matches any of 
the WhatAdSays01 info.
stmt2 = dbConnection.createStatement();
dataResultSet2 = stmt2.executeQuery("select WhatAdSays01 from 
AdInfoView WHERE WhatAdSays01 LIKE '%" + phrase + "%'");

while(dataResultSet2.next()){
// Count the number of matches.
countForMatches++;
///outputToBrowser.println("   WE HAVE A MATCH" + 
countForMatches);

}
outputToBrowser.println("WE HAVE FOUND " + countForMatches + " 
matches for your search word(s) " + phrase + "  ");
count++;
}

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Re: SQL/Servlet Question

[blueads.com]

Thanks Kevin,
It works. Here is an example for anyone else who wants to count matching 
Stings from two different tables.

Sincerely,

Tom Kochanowicz

Statement stmt1 = null;
ResultSet dataResultSet1 = null;

Statement stmt2 = null;
ResultSet dataResultSet2 = null;

PrintWriter outputToBrowser =  response.getWriter();

stmt1 = dbConnection.createStatement();
dataResultSet1 = stmt1.executeQuery("SELECT Email, Phrase, EndDate 
FROM Look4U");

response.setContentType("text/html");

int countForMatches = 0;

// HTML Header
outputToBrowser.println("HTMLHEADTITLELook4U 
Results/TITLE/HEAD");
outputToBrowser.println("BODY");

// Outer loop checks for email  phrase.
while(dataResultSet1.next()){

//System.out.println("THE PHRASE IS " + 
dataResultSet1.getString("Phrase").trim());
String phrase = dataResultSet1.getString("Phrase").trim();
String email = dataResultSet1.getString("Email").trim();

// Inner loop checks if the Phrase found above matches any of 
the WhatAdSays01 info.
stmt2 = dbConnection.createStatement();
dataResultSet2 = stmt2.executeQuery("select 
COUNT(WhatAdSays01) from AdInfoView WHERE WhatAdSays01 LIKE '%" + phrase + "%'");

int numRows = 0;


while(dataResultSet2.next()){
// Count the number of matches.
numRows = dataResultSet2.getInt(1);
countForMatches++;
}

if(numRows  0){
outputToBrowser.println("DATA RESULT SET 2 = " + 
numRows + " Matching the Phrase " + phrase +
" Your email address is: " + email + "P");
}
}

outputToBrowser.println(getServletInfo());
}

-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of Kevin
Mukhar
Sent: Wednesday, March 29, 2000 5:33 PM
To: [EMAIL PROTECTED]
Subject: Re: SQL/Servlet Question


"blueads.com" wrote:

 In my servlet, I am doing a query of one table bringing back the data with
 the method dataResultSet1.getString() then using what I get back to look for
 a match in another table using the sql LIKE syntax. I just want to count the
 matches from my first table that match my second table. I interate through
 them using an outer and innner while statement.
 - Should I be using sql COUNT and if so, how do I get the count into a
 variable I can use in my servlet?

For the second query, yes. Using the COUNT SQL statement will return a single
row with a single record. Read it with getInt().

K Mukhar

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Re: Servlet Threading issue question

[blueads.com]

Magesh,
Normally this would not be a problem, even when the user hits the submit
button multiple times expecially if you are using a connection pool. There
is a way to prevent the using from hitting the submit button multiple time
by using a short javascript (It only takes the first submit request). I use
it on my site and you can view it at www.blueads.com

Tom Kochanowicz


-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
Mageshkumar Maruthapillai
Sent: Monday, March 27, 2000 7:58 AM
To: [EMAIL PROTECTED]
Subject: Servlet Threading issue question


Hi,

I have an a sample form which posts to a servlet say. Well, due to

slow internet connections etc.. the servlet response takes some time to

reach the browser. An impatient user can press the submit button many times.

Say 20. Does this mean that for from this particular user there will be 20
concurrent

threads excecuting concurrently in the servlet instance.

Will this cause a synchronisation problem w.r.t. individual user session
data.??

I think it should. Does the Servlet container serialize multiple requests
for the

same servlet instance from the same client browser

Any answers towards this rather overlooked problem is appreciated.

Thanks,

Magesh.

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Re: Error with weblogic driver and MS SQL7.0

[blueads.com]

Joe,
Here is an example of how I connect to MS SQL7.0 using weblogic's connection
pool. Make sure you have downloaded the latest driver that supports
varchar(8000). Version: 4.5.1.1

Tom Kochanowicz




protected String dbURL = "jdbc:weblogic:pool:myPool";
 public void init(ServletConfig config) throws ServletException
{
super.init(config);

// use println statements to send status messages to web server
console
try {
System.out.println("SubmitServlet init: Start");

p.put("user", "UserNameHere");
p.put("password", "YourPassword");

// FOR TESTING // Compiler.disable();  //turn off JIT so we 
can see line
numbers when debugging

dbConnection = null;
Class.forName("weblogic.jdbc.pool.Driver").newInstance();
Connection dbConnection =
DriverManager.getConnection("jdbc:weblogic:pool:myPool", p);
System.out.println("SubmitServlet init: Loading Database 
Driver");
System.out.println("SubmitServlet init: Getting a connection 
to - " +
dbURL);


synchronized(dbConnection){
// Put prepared statement below if you want or synchonize only the prepared
statements(better choice).




System.out.println("SubmitServlet init: End");
}
}
catch (Exception e)
{
cleanUp();
e.printStackTrace();
}
}

-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of Joe
Oh
Sent: Tuesday, March 21, 2000 2:54 PM
To: [EMAIL PROTECTED]
Subject: Error with weblogic driver and MS SQL7.0


Hello, everyone.
I'm implementing one servlet that connect to MS SQL server7.0 with your
weblogic db driver.

Here is my part of codes:
   try
{
trace("Trying the JDBC driver.");
Class.forName(szDriver);

String szURL = "jdbc:" + szDriverType + ":" + szDatabase;
trace("Getting a database connection.");
Connection dbConnect = DriverManager.getConnection(
szURL, szUserName, szPassword);
checkForWarning(dbConnect.getWarnings()); //--The
error(warning) occurs here!!!
trace("Connected to database.");
return dbConnect;
}
catch(SQLException eSQLException)
{
trace("An SQL Exception was thrown:\n" + eSQLException);
}
catch (Exception eException)
{
// some other kind of exception occurred so dump the call stack
eException.printStackTrace();
}


While I'm connecting to DB with that code, I keep getting the error(warning)
below.
==
SQL State : null
Message : Could not determine default character set because
weblogic.b.j:Database meta data query failed.
Vendor : 0
==

Please help, it's urgent.
Thanks.

Joe Oh
Ignition State

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Re: Best Servlet Engine

[blueads.com]

Title: Best Servlet Engine



Delta 
AirLines, Amazon.com Priceline.com, E-Trade etc. use BEA 
WebLogic.

  -Original Message-From: A mailing list for 
  discussion about Sun Microsystem's Java Servlet API Technology. 
  [mailto:[EMAIL PROTECTED]]On Behalf Of Maria 
  TurkSent: Monday, March 20, 2000 8:09 AMTo: 
  [EMAIL PROTECTED]Subject: Best Servlet 
  Engine
  What is the best Servlet engine as far as 
  scalability and performance is concerned. I'm currently using tomcat is 
  it any good..

Re: NetDynamics or WebSphere?

[blueads.com]

NeitherUse Weblogic WebExpress, great support, connection pooling and
database drivers for all popular databases.

-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
Kelley Foust [GTLLP]
Sent: Friday, March 10, 2000 7:32 AM
To: [EMAIL PROTECTED]
Subject: Re: NetDynamics or WebSphere?


I have been using NetDynamics for almost 4 years.  Are you aware that they
have been bought by Sun and that their product will be replaced by iPlanet
this summer.  In fact I don't think there will be another release of
NetDynamics.

-Original Message-
From: Serge Belolipetski [mailto:[EMAIL PROTECTED]]
Sent: Friday, March 10, 2000 2:57 AM
To: [EMAIL PROTECTED]
Subject: NetDynamics or WebSphere?


Hi all!

Is anybody there using NetDynamics or WebSphere?
I'm interesting in both products and wishing to define key positions to use
one server vs. another or vice versa.

---
Sincerely, Serge Belolipetski,
[EMAIL PROTECTED]

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Want to use the back button

[blueads.com]

I have a servlet that gererates a confirmation page and then a final
submission page. I would like to be able to hit the back button (back two
pages) to the original static html page, but the back button is blanked out.
Why is this? I use to have the following code in servlet, but commented it
out.

//response.setHeader("Expires", "Mon, 01 Jan 1990 06:00:01 GMT");
//response.setHeader("Cache-Control", "no-cache");
//response.setHeader("Pragma", "no-cache");

Thanks,

Tom K.

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Killing a session

[blueads.com]

I would like to kill a servlet session (logout) from a servlet generated
html page using a submit button. Can I put the code (shown below)
 in the same servlet that generated the html page and call it again
to kill the session using a submit button? If so, how?

Sincerely,

Tom K.

 else if(choice.equals("EndSession")){
try{
session.invalidate();
response.sendRedirect(request.getScheme() + "://" +
request.getServerName() + ":" 
+ request.getServerPort() +
"/login.html");
return;
}
catch(IllegalStateException e) {
System.out.println("Exception " + e);
}
   }

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email check

[blueads.com]

Does anyone have a good example of checking for valid email that they care
to share? Better than this one?

// Make sure email it is not null
if(email == null)
return false;
int length=email.length();
if((length  3  length  31)  (email.indexOf('@')  -1) 
(email.indexOf('.')  -1))
return true;
else
return false;

Tom K.

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Re: Running Servlets in WebLogic4.5.1

[blueads.com]

Check with weblogic, they have great support for first time users or users
who are not familiar with there product. You can also thy there website.
www.weblogic.com

Tom K,

-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
puppala sreenivas
Sent: Friday, February 11, 2000 3:35 PM
To: [EMAIL PROTECTED]
Subject: Running Servlets in WebLogic4.5.1


Hi All,
Can any body outline the steps to be followed in running servlets(not the
examples given there) in WebLogic 4.5.1.The examples are running OK.If the
documentation only had these steps it would have been a great help.
tia
vas
__
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Re: email check

[blueads.com]

Bingo Ernie,
I realize that there are some browsers that do not support javascript so I
want the error checking done on the server because of it's importance. What
I have for checking is OK but I want to go a step further and check for
.net, .com .edu etc. No problem, I will figure it out, just thought someone
had something so I wouldn't have to reinvent the wheel.

Sincerely,

Tom K.

-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of Ernie
V
Sent: Monday, February 14, 2000 5:06 PM
To: [EMAIL PROTECTED]
Subject: Re: email check


Depending on how complex your validation schema is, may be one factor in
determine if JavaScript is appropriate or if server-side processing is the
right
thing to do. For example, you may have complex validation logic, or require
that
a dynamic page be presented under certain error conditions, or serve up
messages
from a database. There are many other reasons that I have come across where
server side proccessing is the best solution.

Another thought... a site may have requirements to gaurd against browsers
that
don't support JavaScript. This is especially true with sites that require
adherence to accessibility standards. W3C standards for accessibility
discourage
the use of client side processing because it makes the page less accessible
to
those who are vision impaired or with other accessibility needs. In these
cases,
the only solution is server side proccessing.

As to the code below, the logic seems perfectly acceptable, but it is simple
enough that one might want to consider client side processing using
JavaScript.

As with most web architectures, there is hardley ever a "one size fits all"
solution.

-ernie


David Mossakowski wrote:

 First of all form validation should proabaly be done in JavaScript on the
 client (too silly to come back to server for) and second of all that's
pretty
 much all you can do.

 Some mail servers allow for checking if a given user exists on them but
this
 can't be relied upon.

 dave.

 "blueads.com" wrote:

  Does anyone have a good example of checking for valid email that they
care
  to share? Better than this one?
 
  // Make sure email it is not null
  if(email == null)
  return false;
  int length=email.length();
  if((length  3  length  31)  (email.indexOf('@')  -1) 
  (email.indexOf('.')  -1))
  return true;
  else
  return false;
 
  Tom K.
 
 
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 --
 David Mossakowski  [EMAIL PROTECTED]
 Programmer   212.310.7275
 Instinet Corporation

 "I don't sit idly by, I'm planning a big surprise"


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Slashes to improve performance?

[blueads.com]

In the March issue of Web Techniques magizine there is a small article on
page 114 that in a nutshell states that all URL's should end with a '/' to
keep the server from being hit twice.  Does anyone have knowledge of this as
it pertains to servlets. For example, should a query string that looks like
http://www.someWhere.com/search?SearchWord=ClassifiedAd=Computers%2FSoftwar
eDateId= Have a / at the end of it?

Tom Kochanowicz

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test Please delete

[blueads.com]

test Please delete

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Re: how do you use servlet html tag?

[blueads.com]

Brett,

Here is a simple snippet of code for a server-side-include in an html page:

! Server Side Include servlet name=SSICounter /servlet
/FORM

/BODY

/HTML

doGet  doPost depends on what data you are sending and how you want it
formated. For example sending a large amount of data, you want to use
doPost. You also need so use doPost if you are using SSL. doGet works a
better (faster) if sending small amounts of data. Don't know the spec's off
the top of my head. Bottom line is you can use doGet or doPost with SSI

Tom Kochanowicz


-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
Kaylor, Brett
Sent: Monday, January 24, 2000 10:43 AM
To: [EMAIL PROTECTED]
Subject: how do you use servlet html tag?


I am working with jswdk-1.0.1. I can use/modify the examples for without
problems. But I cannot create an html page with the servlet tag and get
it to work. Can anyone show me a simple working example? Also, which
method does the servlet tag execute (i.e. doGet)?

Thanks,

Brett


~~
Brett B. Kaylor
Software Engineer

GENERAL DYNAMICS
Electronic Systems
1805 West Drake Drive
Tempe, AZ 85283
Tel: 480.777.1725
Fax: 480.777.1717
Email: [EMAIL PROTECTED]
~~

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Re: [ANN] Need Java Training?: Servlets, JSP and XML

[blueads.com]

Chad,

I've read several of your articles on servlet technology from the leading
Java mags. Thanks for sharing this information with the servlet interest
group. From many of the questions on this list I'm sure many can benifit
including myself.

Tom K.


-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
Leonard, Ed
Sent: Monday, January 10, 2000 1:33 PM
To: [EMAIL PROTECTED]
Subject: Re: [ANN] Need Java Training?: Servlets, JSP and XML


Thank you.  I hope that it goes well for you, but I don't think that this
forum is for advertisements.

-Original Message-
From: Chad Darby [mailto:[EMAIL PROTECTED]]
Sent: Monday, January 10, 2000 12:37 PM
To: [EMAIL PROTECTED]
Subject: [ANN] Need Java Training?: Servlets, JSP and XML


Hello,

Learning Tree International has released a new Java training course.

"Java for Web Application Development:  Servlets, JSP and XML"


In the course, you will learn how to:
-
-  Build data-driven Web applications with server-side Java technologies
-  Add a Web interface to your databases using Java servlets
-  Generate dynamic, interactive Web pages with JavaServer Pages (JSP)
-  Personalize content for users with cookies and sessions using the
Java Servlet API
-  Extend Web application functionality using distributed objects
-  Use XML as a data-exchange mechanism

View the course details on-line:
http://www.learningtree.com/us/ilt/courses/570.htm


Course Dates, Location and Price:
-
The course is offered in the U.S., Canada, U.K, and Sweden.  Visit the
Learning Tree web site for details of dates, location and price.

U.S. Info:http://www.learningtree.com/us/ilt/courses/570.htm
Canada Info:  http://www.learningtree.com/cn/ilt/courses/570.htm
U.K. Info:http://www.learningtree.com/uk/ilt/courses/uk570.htm
Sweden Info:  http://www.learningtree.com/se/ilt/courses/se570.htm


About Learning Tree
---
Learning Tree currently offers more than 150+ instructor-led course
titles, which are scheduled regularly in major cities worldwide, as well
as at client facilities.  Find out more information about Learning Tree
at:  http://www.learningtree.com


BTW:  I'm the course author :-)

--

---
Chad (shod) Darby|J9 Consulting, Inc.
[EMAIL PROTECTED] |http://www.j-nine.com
---


Info on my upcoming presentations:
---
"JavaServer Pages (JSP)""Developing Web Apps w/ JSP  XML"
- SIGS Object Expo  - Evolve 2000
- Feb 23, 2000 in NYC, NY   - Feb 28, 2000 in Sydney, Australia
- http://www.objectexpo.com - http://www.dstc.edu.au
---

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Re: Who is using servlets?

[blueads.com]

Nic,

This is a valid question. When I tried out servlets and decided to use the
weblogic server engine, I wanted to know who was using it besides Delta Air
Lines and E-Trade. Check out the following web-site.

http://www.beasys.com/customers/weblogic/server/websites.html


Tom Kochanowicz



-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of Nic
Ferrier
Sent: Monday, January 10, 2000 10:02 PM
To: [EMAIL PROTECTED]
Subject: Re: Who is using servlets?


 Betty Jo Booth [EMAIL PROTECTED] 11-Jan-00 2:23:48 AM 

I am asking because I have had concerns stressed to me regarding
the ability of servlets to provide a scalable solution.  One of the
most
popular remarks is that you never hear of any larger web
applications
using this technology.  Is this true?

You'll get lots of replies here telling you that it isn't.

BT run Talk21 (a free email system with over a million users) on 8
machines with JRUN 2.0 on them. Nearlly all the issues we've had have
been with back end directory and mail servers and none with the Java
end.


Nic Ferrier

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Re: e-mail apology

[blueads.com]

Paresh, 

 Chad already appoligized. You might 
want to be nice to this guy since he is an authority on servlets and one great 
author!

Tom 
Kochanowicz

  -Original Message-From: A mailing list for 
  discussion about Sun Microsystem's Java Servlet API Technology. 
  [mailto:[EMAIL PROTECTED]]On Behalf Of Paresh 
  GheewalaSent: Monday, January 10, 2000 11:28 PMTo: 
  [EMAIL PROTECTED]Subject: Re: e-mail 
  apologyHey Chad Darby, 
  Who is this guy and sending such type of junk mails. This E-Servlets 
  Technical Forum and not your advertising WEB site. 
  Don't send this types of mails and don't disturb technical people and 
  waste the important time. 
  Paresh  
  Chad Darby wrote: 
  Hello, 
Please accept my apology for advertising the servlets course on 
the servlets  jsp lists. In the future, I will not 
send any advertisements to the lists. Corrective action has 
been taken. 
-- 
--- Chad (shod) 
Darby | J9 Consulting, Inc. 
[EMAIL PROTECTED] | http://www.j-nine.com 
--- 
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Re: PreparedStatement trouble

[blueads.com]

It looks like you are using "name_of_table" where it should be the
"column_name_of_table"

Tom Kochanowicz

protected final int COLUMN_POSITION = 1;
displayStatementWordAdInfoView.setString(COLUMN_POSITION,
some_variable_from_getParameter);


-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of
Robert Pimentel
Sent: Thursday, January 06, 2000 10:17 AM
To: [EMAIL PROTECTED]
Subject: PreparedStatement trouble


Hi :)

I apologize, slightly off-topic. I'm hoping a few people here have worked
with JDBC.

Having trouble with my preparedStatment. I'm trying to assign a value to my
placeholder.The SQLException is raised. Error ORA-00903 Invalid table name.
Here's some of the code.

PreparedStatement pstmt = conn.prepareStatement("Select * from ?");
pstmt.setString(1, "name_of_table");
ResultSet rset = pstmt.executeQuery();

I've tried using different table names. No luck. I also tried assigning the
value to a String first (i.e String tab_name = "name_of_table";). No luck.
I've also tried PreparedStatement pstmt = conn.prepareStatement("Select
column1 from ?"); In case the '*' was causing a problem. Still no luck. Is
it even possible to dynamically assign the name of a table with a
PreparedStatement?? Am I forgetting something??

Tia,

-Robert-

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Re: Java Mail

[blueads.com]

What you may try to do is ping the smtp server first. This will tell you if
you can "see" it from your server.  Next, using your msgsend.class applet
try :
java msgsend -M mailhost.your_mail_host.att.net and see if it works. You
should not need a password if your smtp host is configured correctly. If
push comes to shove, ask your administrator if you can run the msgsend.class
on the mail server. If it works there you know its not recognizing your
server. By the way if you have a dial-up connection with some ISP and know
the smtp mailhost the command mentioned above will work fine... I do it all
the time.

Tom Kochanowicz


-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of Telmo
Sá
Sent: Wednesday, January 05, 2000 11:22 AM
To: [EMAIL PROTECTED]
Subject: Re: Java Mail


Hi!
About MSExhange.
I have talked to my sys admin and e verified that we have SMTP and X400
installed.
We have MSExchage4.0. (Can it be because of this??)
I dont know what to do anymore.
Is there anything in MSExchange that prevents users to telnet port 25?
I am trying this:
java msgsend -L smtp://me:[EMAIL PROTECTED]
I still cant connect.
What can i do?

Telmo

 -Original Message-
 From: Craig R. McClanahan [SMTP:[EMAIL PROTECTED]]
 Sent: Wednesday, January 05, 2000 3:47 PM
 To:   [EMAIL PROTECTED]
 Subject:  Re: Java Mail

 Telmo Sá wrote:

  Hello!
  I am trying to connect to MSExchange server from a servlet using Java
 Mail
  API.
  Has anyone successfuly did this or something close?
  I realy could use some hints on it.
  Every time i try to connect i get an error.
  I cant even connect using telnet to port 25.
  Thank you!
  Telmo
 

 I have a production application that sends hundreds of messages per day --
 subscribed-to reports -- this way (via MS Exchange).

 Sounds like SMTP support is not enabled in your MS Exchange configuration.
 Have your mail admin check that out.  If you cannot telnet to port 25
 yourself, there's no way that Java will be able to either :-).

 Craig

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Re: [Re: credit card validation servlet]

[blueads.com]

-Original Message-
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of Paul
Johnston
Sent: Friday, December 31, 1999 6:50 PM
To: [EMAIL PROTECTED]
Subject: Re: [Re: credit card validation servlet]


You don't need or want to dedicate something as heavyweight as a servlet to
this, just a single object will do.  Here's a package I wrote to do this...

http://www.stanford.edu/~pcj/luhn/luhn1_0/

Paul

-Original Message-
From: Mahesh Patil [EMAIL PROTECTED]
To: [EMAIL PROTECTED] [EMAIL PROTECTED]
Date: Wednesday, December 29, 1999 8:38 AM
Subject: Re: [Re: credit card validation servlet]


If possible, please send me the same.
Mahesh

sachin rameshrao zingade [EMAIL PROTECTED] wrote:

 -
   Attachment:
   MIME Type: multipart/alternative
 -
RE: credit card validation servletif possible please send the same to me

Sachin
  - Original Message -
  From: Srinivas_Kondamudi
  To: [EMAIL PROTECTED]
  Sent: Thursday, December 09, 1999 11:12 AM
  Subject: Re: credit card validation servlet


  I am also working on an application that requires credit card validation.
  I am also interested in the same. Please send the servlet code to me
also.

  Thanks in advance

  srinivas

   -Original Message-
  From:   Rogatkin, Dmitry M [mailto:[EMAIL PROTECTED]]
  Sent:   Thursday, December 09, 1999 5:57 AM
  To: [EMAIL PROTECTED]
  Subject:Re: credit card validation servlet

  We have such part in the code of our servlet. If you are interested in, I
  can send this part to you.

  Dmitry.
  - Original Message -
  From: "Sameer Tyagi" 
  To: [EMAIL PROTECTED]
  Sent: Wednesday, December 08, 1999 7:41 AM
  Subject: credit card validation servlet



   Hi,
   Does anyone know of any Java class /servlet that does basic credit card
   number validations ?
  
   -Sam
  
  

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Get free email and a permanent address at http://www.netaddress.com/?N=1

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