koray guclu

Hi all,
I passed the exam today.
i am thinking of taking another certification I think of Oracle, Linux, and Cisco CCNA
Which one do you think that I should take next?
I am looking for one exam which I donot need to study too much.
s u
www.korayguclu.de
www.geocities.com/korayguclu

Hello,
I donot understan why should I use Jdialog
for example I made an application launcher that lauches other application by clicking on the buttons.
that application launches other applications by using JFrames
should I use Jdialog instead?

those dots are not important when I run this code
thread 1 can call an instance of SimpleDateFormat(str) with a string str and another thread will run try to change this varianle str and also pass this value to that simple data format instance.
I wonder what will happen if I declare it final
because fialmodifier is used for constants.
If I use final I think that this will not be the same for every
Thread object and compiler will not use the same memory
because it is final.
What do you think?

Hi every body.
I want to write a thread some think like this.
01: class mythread implements Runnable 02: { 03: // ... 04: public final String myfunction(final String str) { 05: SimpleDateFormat myDate = SimpleDateFormat(str) 06: ... 07: 08: 09: }
at line 4 the function is not syncronized I donot want to make this syncronized because I need performance. should I make this method final? and its parameter final?
Will it be thread safe if I do so?
Thanks

I am trying to implement the following code. But I didnot understand the Thread based problems in Servlets. Should I use Syncronized {} at the following code when changing a variable in the servlet code?
import java.io.*; import java.util.*; // import continues .. public class Controller extends javax.servlet.http.HttpServlet { // Code continues ..... public void service(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { String next; String viewName; try { Response response = new Response(res); Request request = new Request(req); // get the application parameter from request viewName = request.getParameter(IParameters.APPLICATION_PARAM_NAME); //Check if the user is logged in if (request.getAttribute(IParameters.USER)!=null) { // ************************************************* // // // Should I use syncronized in that code to // change the following variable ? // userHasaSession = true ; // // // ************************************************* } if (userHasaSession) { // lookup which application it is // Return the applicationCommand Command cmd = lookupCommand(viewName); next = cmd.execute(req); CommandToken.set(req); } } catch (CommandException e) { req.setAttribute("javax.servlet.jsp.jspException", e); next = _includedir + _error; } RequestDispatcher rd; rd = getServletContext().getRequestDispatcher(next); rd.forward(req, res); } }
Thanks
I will use this at my open source project at http://project1.sourceforge.net/index.html
Koray

String has a special mechanism which is called String pool.
this is related to the String pool. Those two has different effects in terms of instances in the pool.


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Koray GUCLU ~ the sky has no limit ~
(B.s. Computer Engineer)
Frankfurt am Main, Germany
web : <A HREF="http://www.geocities.com/korayguclu/<BR rel="nofollow">" TARGET=_blank>http://www.geocities.com/korayguclu/
mail: korayguclu@yahoo.com
-----------------------------------------------------

Make a ODBC connection to Excel file and then fetch the values from file by using java and then insert them to your database. Or make XML file from your excel by using MS stuff and then import this XML to your application.
Check perstore application at java.sun.com web site.
you can get code snippets from there.
------------------
-----------------------------------------------------
Koray GUCLU ~ the sky has no limit ~
(B.s. Computer Engineer)
Frankfurt am Main, Germany
web : <A HREF="http://www.geocities.com/korayguclu/<BR rel="nofollow">" TARGET=_blank>http://www.geocities.com/korayguclu/
mail: korayguclu@yahoo.com
-----------------------------------------------------

Reinstall your JVM.
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-----------------------------------------------------
Koray GUCLU ~ the sky has no limit ~
(B.s. Computer Engineer)
Frankfurt am Main, Germany
web : <A HREF="http://www.geocities.com/korayguclu/<BR rel="nofollow">" TARGET=_blank>http://www.geocities.com/korayguclu/
mail: korayguclu@yahoo.com
-----------------------------------------------------

I have added some more details

Hi
I want to make a servlet or JSP to download .cvs excel files.
Those files will be generated on the fly. and will be download
How will I make this?
--------------------

I will use sevlet/Jsp to connect the database and I want to make a .cvs file with the values that I fecth from the database.
I can change the mime type but I will I change extension of the downloaded file?
For example
I will make a link.
index.jsp
-------------
.....
<A HREF="my_cvs_producer.jsp">
Click that link to download the CVS file</A>
.....
the link will point that file.
mycvsproducer.jsp
-------------
.....
change Mime type to text/plain (or is there something else for CVS?)
connect to database
fetch values from the database
display values
close connection
.....
The system is something like that but I donot know
how to change the file name which has an CVS extention.

------------------------
Koray G��l�
(B.s. Computer Engineer)
[This message has been edited by koray guclu (edited July 18, 2001).]
[This message has been edited by koray guclu (edited July 18, 2001).]

Does anybody know how to short values in an Iterator?

hi,
I am using EJB findxxx methods to get database values by specific key. I use powerTier is it possible to sort the value in application server or should I do a short algorithm for it?

hi,
go to www.amazon.com and search for OOP or what ever you want and check the ranks and read the user comments there.

File class defines platform independent interface
public static final char separatorChar pathname is absolute if it starts with a separator character
public static final String separator / = Unix \ = Windows : = Mac
public static final char pathSeparatorChar : = Unix ; = Windows e.g. c:\book;c:\windows;
public static final String pathSeparator
Contructors
File(String pathname)which cannot be changed once file object is created, empty string mean current directory
e.g.
File f1 = new File(File.separator+"book"+File.separator+"ch1");
/book/ch1 --absolute path
File f2 = new File book"+File.separator+"ch1");
book/ch1 ---relative path
And check my web site for certifcation documents
at http://www.geocities.com/korayguclu/

You must instantinate the class before accessin it because it is an inner class.
Read my document at http://www.geocities.com/korayguclu/ for further info about inner classes