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- 1
- java6 does it address default focus on a modal formIts always been near impossible to dynamically set a field with the
default focus when a form (perhaps previously instantiated) is
setVisible - if the form is a modal dialog.
Does anyone know if Java 6 addresses this?
- 1
- security-roles: application.xml vs web.xmlHi,
does anybody know how a webmodule behaves when It is assemble in an ear
containing the web module and I include security-roles in both the
application.xml and web.xml? I have been browsing both the j2ee and servlet
specs, but I haven't found any description of mandated behaviour. I have
tested a little with sun one appserver7. This appserver seems to ignore the
security-roles defined in the web.xml. What's more, don't mentioning
security-roles in the application.xml and only use the web.xml for mapping
security-roles breaks the login process.
Does all this mean that security-roles in the web.xml file can only be used
for standalone web applications and not for web modules who are part of an
ear?
Cheers
Jan
- 1
- HttpUrlConnection caching ipHello,
I got an ip caching problem when using HttpUrlConnection class.
When using the code :
URL url = new URL("http://a.domain");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
The VM seems to cache the ip address associated with the domain "a.domain".
If the ip associated with this domain change, the VM still connect to the
old ip. The only way to connect to the new ip, is to restart the VM.
I have tried
java.security.Security.setProperty("networkaddress.cache.ttl", "0");
but it does not work with HttpUrlConnection (it works fine with InetAddress
class for instance).
Any idea ?
Thank you,
Christophe
- 3
- translate fitsG0ldmark Industries, Inc ( G D K I )
THIS ST()CK IS E><TREMELY U_NDERVA_LUED
Huge Advert|sing Campaign this week!
Breakout Forecast for July, 2006
Cu_rrent Price: $7.02 (5 days ago was $5)
Sh0rt Term Price Target: $12.00
Rec0mmendati0n: Str0ng Buy
RECENT H0T NEWS released MUST READ ACT NOW
LOS ANGELES & VANCOUVER, British Columbia---(July 5, 2006)
Goldmark Industries, Inc. ( G D K I - News) is excited to announce
that the Company is embarking into a new business direction. The
Company is making an aggressive move into the multi-billion-dollar
Urban Entertainment industry. The Hip-Hop Entertainment industry
generates several billion dollars per year in product sales with
an estimated consumer-based purchasing power well into the hundreds
of billions of dollars and topping over one trillion worldwide.
About Goldmark Industries, Inc ( G D K I ):
Goldmark Industries is preparing to stand at the forefront of
the Hip Hop consumer market, offering a wide range of urban
entertainment services in Music, Feature Films, Television,
Home Video/DVD and Major Events
Compaq Diag. viewing SCSI
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- 3
- Packing Resource-Based App Into a .JARI have an application which uses outside data files. That is, it has
lines of code like this:
DataReader.loadFile("data/MyFile.dat");
Right now the app is just a bunch of .class files and I start it on
the command line from the appropriate directory to ensure that the
data files can be found.
But I want to package the app as a .jar (a .jar which includes the
data files) and be able to run the .jar from any directory. That is,
when it's running, java should search for the data files relative to
the .jar root, rather than relative to the root where the process was
started.
How can I do this?
Thanks,
cpp
- 4
- How can I make my applet call another Web page?Hi All,
Would anyone know a way to have an applet call another Web page so
that, after the new page is loaded, if I hit the back button then I go
back to the page where the applet is at?
I don't need to know about button action events or about layout
managers or anything like that, just the URL processing code, or a
good reference.
Thank you,
S.
- 4
- ServerSocket & multiple clientsNeed help please.
I am trying to write a small client-server application that uses a
ServerSocket that allows connection of two clients via two ports (one on each
port, say 3000 & 4000).
I've tried different techniques, but always get the first client working but
the second client waiting until after the first client has ended (see code
snippet below).
How should I approach this (without the use of threads)?
(I am using the loopback address of "127.0.0.1" as both clients are on the
same PC)
private ServerSocket ss1;
private ServerSocket ss2;
private Socket socket1;
private Socket socket2;
try
{
ss1 = new ServerSocket(3000);
ss2 = new ServerSocket(4000);
}
and then
socket1 = ss1.accept();
socket2 = ss2.accept();
- 4
- read gps bluettoth on applet pda - javacommHi all,
I'm a student..
I wrote an applet for PC that reads GPS data from serial port (using
javacomm)....
I would like to have the same applet on my pda, an IPAQ h1940 with bluetooth
gps receiver ....
I'm using javacomm and driver for pda found on www.teilo.net , I followed
the steps of the site, but it doesn't work... :-(
any questions:
- where have I to put javax.comm.properties, CESerial.jar and comm.jar ???
in which directory?
- how can I add the directory containing the javax.comm.properties, and the
paths to both jar files to my classpath? modifying the registry? which key?
(I searched in the registry but I didn't find none of java, path, classpath
etc...)
- if I want to read bluettoth data, I have to read a virtual serial port
(COM8?), right?
thanks all!
gp
- 9
- menu drawn behind canvasHi,
I have a JFrame with a menu bar and inside the the frame a canvas. When I
click on a menu item
the menu is always (partly) drawn behind the canvas. How do you set the
options that will draw the menu(bar) to be visible ?
thanks
Johan
- 10
- 10
- Forged posts (was: Re: operator overloading)Someone impersonating Lew <email***@***.com> writes:
> Those aren't domain goals, those are church programmes, and they
> don't matter a jot to the cheesecake.
[ More dissociated-press text elided. ]
Has anyone else complained to the site where these posts are
being injected or does Lew enjoy having a special fan?
Regards,
Patrick
------------------------------------------------------------------------
S P Engineering, Inc. | Large scale, mission-critical, distributed OO
| systems design and implementation.
email***@***.com | (C++, Java, Common Lisp, Jini, middleware, SOA)
- 10
- Quick help needed. Code runs, but one problem cannot be solvedHey, guys. I designed this code for guessing numbers.
The program should pick a random number between 1 and 10, inclusive
both. Then repeatedly prompt the user to guess the number. On each
guess report to the user that he or she is correct or that the guess is
high or low. Continue accepting guesses until the user guesses
correctly or choose to quit. Count the number of guesses and report
that value when the user guesses correctly. At the end of each game,
prompt to determine whether the user wants to play again. Continue
playing games until the user chooses to stop
Here is the problem, I let the random number print, so I know what
number is it. But when I input that number, instead of showing up
"Congratulations...", it shows up the correct number I entered is too
high. Please let me know what is going on. Thank you
//Code started!
import java.util.Random;
import java.util.Scanner;
public class HighLow
{
//
// Plays the Hi-Lo guessing game with the user
//
public static void main(String[] args)
{
boolean done = false;
boolean playAgain = true;
Random numberGenerator = new Random();
int randomNumber, numberOfGuesses, userNumber;
Scanner scan = new Scanner(System.in);
//
// Constants for messages to the user
//
final String guessMessage = "Enter your guess (-1 to quit): ";
final String tooHigh = "Sorry, the number you entered is higher than
my number.";
final String tooLow = "Sorry, the number you entered is lower than my
number.";
final String justRight = "Congratulations! You guessed my number!";
final String playAgainMessage = "Play again?";
while (playAgain) {
//
// Pick a random number
//
randomNumber = numberGenerator.nextInt(10) + 1;
System.out.println("The correct number is " +randomNumber);
//
// Start the guessing game
//
System.out.print(guessMessage);
userNumber = scan.nextInt();
numberOfGuesses = 1;
if (userNumber > randomNumber)
{
System.out.println(tooHigh);
numberOfGuesses += 1;
}
if (userNumber <0 && userNumber!=-1)
{
System.out.println("1-10 only");
}
if (userNumber < randomNumber && userNumber > 0)
{
System.out.println(tooLow);
numberOfGuesses += 1;
}
if (userNumber == randomNumber)
{
System.out.println(justRight);
numberOfGuesses += 1;
System.out.println("It taks you " +numberOfGuesses+ " times to
guess right");
}
//
// Check to see if the user wants to stop guessing
//
if (userNumber == -1)
done = true;
//
// Check to see if the user wants to play again
//
System.out.print("Would you like to play again? (y/n)? ");
if (scan.next().equals("n"))
playAgain = false;
else
done = false;
} // while loop
System.out.println("Thanks for playing! Bye!" );
} //method main
} //class HiLoGame
- 16
- Is eclipse broken?
--xHFwDpU9dbj6ez1V
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable
I'v got a 5.1 RELEASE box. plenty of disk space and memory. Recently
rebuildt from a complete cvsup (cvsup, make buildworld, make installworld,
pkgdb, portupgrade)
=3D=3D UNAME =3D=3D
berkeley% uname -a
FreeBSD berkeley.mooseriver.com 5.1-RELEASE-p11 FreeBSD 5.1-RELEASE-p11 #0:=
Sat Dec 13 01:17:51 PST 2003 email***@***.com:/usr/obj/usr=
/src/sys/BERKELEY i386
berkeley%=20
=3D=3D MAKEFILE =3D=3D
New ports collection makefile for: eclipse
# Date created: March 7, 2003
#
# $FreeBSD: ports/java/eclipse/Makefile,v 1.15 2003/12/04 10:26:10 olgeni E=
xp $
#
PORTNAME=3D eclipse
PORTVERSION=3D 2.1.2
so I do the following :
cd /usr/ports/java/eclipse
make install clean
and I get :
<bunch of comple messages> then=20
=3D=3D=3D> Linking eclipse.
/bin/mkdir -p plugins/platform-launcher/bin/freebsd/gtk
/usr/local/bin/ccache g++ -o plugins/platform-launcher/bin/freebsd/gtk/ecli=
pse plugins/platform-launcher/library/gtk/../eclipse.o plugins/platform-lau=
ncher/library/gtk/../eclipseUtil.o plugins/platform-launcher/library/gtk/ec=
lipseGtk.o `pkg-config --libs gtk+-2.0`
/usr/bin/ld: warning: libatk-1.0.so.200, needed by /usr/X11R6/lib/libgtk-x1=
1-2.0.so, may conflict with libatk-1.0.so.400
=3D=3D=3D> Compiling Java sources.
ant -Dos=3Dfreebsd -Dws=3Dgtk -f build.xml compile
/usr/libexec/ld-elf.so.1: /usr/lib/libm.so.2: Undefined symbol "__fpclassif=
yd"
*** Error code 1
Stop in /usr/ports/java/eclipse/work.
*** Error code 1
is anyone else getting this?
Josef
--=20
Josef Grosch | Another day closer to a | FreeBSD 5.1
email***@***.com | Micro$oft free world | Berkeley, Ca.
--xHFwDpU9dbj6ez1V
Content-Type: application/pgp-signature
Content-Disposition: inline
-----BEGIN PGP SIGNATURE-----
iD8DBQE/2ufUy8prLS1GYSERAvxvAKCYaR1F5IqkE8fzEx5uqdP79BhLtQCg6e8Q
b9/KxeK0nzfbwfFL0Ptwo+o=
=M5R6
-----END PGP SIGNATURE-----
--xHFwDpU9dbj6ez1V--
- 16
- Rollover button problemI'm building a site in Dreamweaver MX where I have a set of rollover
buttons. These buttons go dim when the mouse is over them. When clicked,
another image appears on a different part of the page (I built this using
the Set Nav Bar image function). This all works fine on my Mac, using my
browser safari and Internet Explorer. But on a PC using Internet Explorer
the rollovers dim but when clicked nothing happens. Does anybody know why?
I can paste the code if that helps anybody . I'm not too good at
understanding Java script code so let me know what bits might help
Thanks
Kate
- 16
- Help me!! Why java is so popularrad dog58c wrote:
>
> How can it negative? I'm not saying you're wrong, but how can any
> byte-coded language outperform a binary language if they are doing the
> same thing? It can't, because you have to convert the byte code to
> the native binary stream before you can execute it. So I'm thinking
> you mean certain algorithms are more efficiently handled by the JVM?
> Please elucidate -- I heard someone say Java memory management now
> exceeds C and I thought it was an interesting notion and probably
> related to some ingenius optimizations in memory mgt algorithms,
> though I honestly don't know.
Garbage collection can have an advantage in multi threaded applications,
and in Java we can have exact c. The JIT can optimise (and inline) the
code you are actually using today. I have code where part of computation
is represented by an interface and the implementation selected depends
on the data being processed.
In a compiled language you can't optimise across the interface call
whereas with Java you can. Even better you can generate byte code at run
time (e.g. compile an expression typed by the user) and then the JIT can
compile that to machine code and if it is simple enough inline it.
Java can devirtualise a method call if at some point you happen to have
only one implementation in the JVM.
> No doubt, and Java's fine messaging implementation and rich set of
> protocol support, eg, makes it a good vehicle for such things. A
> service I'm fine with -- a utility I need to fire up over and over,
> not so fine with that. I wouldn't write that in Java.
If it is something you fire up manually then the startup time isn't
important (takes you longer to type the command). If it is run from a
script, then it rather depends on the script (i.e. if the script system
maintains a JVM to execute little tasks in, the startup time can again
be negligible).
>
> At one time there was a Java compiler that let you go from Java
> to .EXE. I used it quite a bit, although the .EXEs it generated were
> pretty fat for the functionalit they implemented. Then again Java's
> not about creating .EXEs, so that didn't surprise me.
Such things still exist but have always struggled to match the
performance of regular JVMs.
> How does one get Java to run faster than a compiled language?
Take advantage of its strength, the ability to compile dynamically
loaded (or created) code and optimise the whole without regard for
module boundaries. Also take advantage of garbage collection --- its
performance has dramatically improved in recent years.
Mark Thornton
|
| Author |
Message |
Sergey
|
 Posted: 2003-6-27 17:44:00 |
Top |
java-programmer, View large file
I need to view a large file. If I use class JTextArea will it load
whole file into RAM or load one in portions?
I have read I must use ZoneView for this purpose. How can I use it?
Thanks in advance
|
| |
|
| |
|
| |
|
Index ‹ java-programmer |
- Next
- 1
- Technique for loading user defined modulesDear all,
I am writing a program to do data analysis. I want the user to be able to
extend the functionality of the software by adding their own "analysis
modules" but am unsure how to go about this. From the user perspective, I
would like the application to look in a particular directory (or along some
user defined search path) for modules (classes) with the appropriate
behaviour and make these modules (classes) available through the program's
user interface.
It must be possible to complile these modules without access to the source
code for the entire data analysis program.
Can anyone give me some hints on which direction I should go in to handle
this issue?
Thanks in advance,
Per
- 2
- String concatenation versus StringBufferCan someone deny or confirm that the latest sdks convert code like
"abc" + "def" + "ghi"
into the appropiate StringBuffer code
new StringBuffer( "abc" ).append( "def" ).append( "ghi" )
automatically? Or is this some dream I had?
Thanks!
- 3
- Question concerning jh_manifestHi Matthew,
I have further researched this problem. To me it seems a (not too
trivial) bug in jh_manifest. See
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=489214. Maybe better to
discuss the topic there to keep this list clean...
Cheers,
Florian
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- 4
- Problem with browser tabs and sessionsI have a application make in jsp tomcat 4.1.
the customer fill some forms and the data in store in session.
The problem is that if customer open new tab(ie or firefox) and see
info another product when he change for tab initial and submit, the
system will rise error because some data of session was changed.
How i can fix it ?
I need each tab have your new session, there are any config in tomcat
for make it ?
thanks a lot
- 5
- Singleton QuestionOn 1 Jul 2004 05:10:57 -0700, email***@***.com (Dave Monroe)
wrote or quoted :
>What's GoF?
see http://mindprod.com/jgloss/gof.html
--
Canadian Mind Products, Roedy Green.
Coaching, problem solving, economical contract programming.
See http://mindprod.com/jgloss/jgloss.html for The Java Glossary.
- 6
- Fourier Transform with JavaHello,
I'm searching an effective Java library which offers Fourier Transform
methods.
Has someone used a library like this please ?
Thanks
CABA
- 7
- Setting namespaces in DOMHi all,
I'm trying to construct an XML (SOAP) document, with a number of namespaces.
DOM provides Document.createElementNS(), which can be used to add the
namespace in the particular element. However, I often get the case where
the namespace definition is repeated in multiple sibling elements, while
it would be a lot simpler (cleaner?) to define the namespace only once
at a higher level.
I tried using
document.getRootElement().setAttribute("xmlns:xsd", XSD_NS);
but, even though the document.toString() shows the correct xmlns:xsd
attribute in the root node, it is still repeated in the lower level
elements.
Does anyone have any idea of how the DOM decides when to "roll-up" a
namespace definition to a higher level? Or how to tell it to?
I'm talking about the difference between:
<rootnode>
<childnode xsi:type="xsd:int" xmlns:xsi="http://w3c.blah"/>
<childnode xsi:type="xsd:int" xmlns:xsi="http://w3c.blah"/>
<childnode xsi:type="xsd:int" xmlns:xsi="http://w3c.blah"/>
</rootnode>
and
<rootnode xmlns:xsi="http://w3c.blah">
<childnode xsi:type="xsd:int"/>
<childnode xsi:type="xsd:int"/>
<childnode xsi:type="xsd:int"/>
</rootnode>
Many thanks.
Rogan
- 8
- directory questionI have a file named "main.ini" in the directory of jar (self-executable
package)
When I run jar from its directory all ok
When I run jar from another directory it cannot found "main.ini"
I open "main.ini" with
InputStream is = new FileInputStream("main.ini");
but I understand I must open it with
InputStream is = new FileInputStream(getDirectoryOfJavaProgram() +
"main.ini");
can you implement
getDirectoryOfJavaProgram()???
thanks!
- 9
- How to get files files which were last usedHi,
is it possible to determine the files which were last used from
different applications (e.g. "readme.txt was used in the last 2 hours")
on MAC with Java by default System calls?
Or is this only possible by writing a sort of "trigger" application?
Thanks,
Peter Vermeer
- 10
- Outsourcing to India and ChinaPhillip Lord <email***@***.com> wrote in message news:<email***@***.com>...
> >>>>> "Loco" == Loco Pollo <email***@***.com> writes:
>
> >> >this is anti free trade and ultimately anti freedom.
> >>
> >> Free trade is not necessarily a good thing.
>
> Loco> no but many good can come of it.
>
> >> First it encourages shipping goods all over the planet that could
> >> have been produced locally. This wastes fuel and pollutes the
> >> atmosphere.
>
> Loco> in a truly market economy, it wouldn't happen unless it is
> Loco> cost effective. this would include the cost of pollution.
>
> No it wouldn't. The market economy fails to work for any commodity
> where the cost of charging for that commodity either outweighs the
> value of that commodity, or worse, there is no way to charge for a
> commodity.
>
> For example, I like hill walking. In the UK there are lots of
> hills. Its not possible to charge for them because building a large
> fence around the for example, the 150 miles of the peninnes would cost
> a massive amount. Worse there is a legal "right to roam" which
> effectively stops the land owners from doing this anyway.
imho what your talkin bout has nothin to do with a free market. if
there's no market for it the market wouldn't be there. if there is a
need a market would self create itself. in your example, no company
would try to charge you for the trails you use if there was no way to
make $ off of it(of course there is and they are, hiking boots from
texas, rain jacket made in china, etc..). the destruction of nature
caused by hikers has more to do with govt and user obligations than
with free trade. actually none of that example has to do with free
trade.
> Of course in the US, it would be a different matter, as you would just
> build a gate across the road leading too the hills, which would
> effectively block all access.
actually we got what's called national parks where the govt pays for
its upkeep subsidized by entry fees. i'm guessing our national park
system has 100s of millions of people accessing them per yr and
preserves what would otherwise be developed.
> >> It enables multinationals to exploit workers by threatening to
> >> move to where labour and environmental laws are laxest.
>
> Loco> multinationals are no different than national companies. if a
> Loco> country "can" manage a national company, i see no reason why
> Loco> the world can't manage a multinational.
>
> We don't have a world government. The only "regulatory" bodies for
> multinationals for some reason seem to work in the interest of the
> multinationals, or more accurately the interest of those who own the
> multinationals rather than the population at large.
we do have a world govt. there are people who specialize in
international laws. yes multinationals have way too much power,
however, this isn't because of free trade. its because we as a species
are too greedy and corrupt.
we have everything we need to create a paradise but none of the social
maturity to accomplish it.
- 11
- ASP.NET vs J2EE - Scalability and SpeedRegarding this pieces of information:
65% of the Fortune 500 companies
80% of the top US healthcare companies
75% of commercial banks worldwide
90% of the top commercial banks in the US
67% of the world's largest banks use IBM messaging servers
15 of the top Wall Street brokerage firms
7 of the 8 largest US telecommunications companies
That's true. But what I can understand about that figure was -
Those businesses started using Internet and Computer Networking
technologies times ago. It happens before Microsoft started to get
strong. I am working in a pharmaceutical company in US and we are using
lots of IBM products. We are trying very hard to stop using them and
turn our techology to Microsoft. Off course, personnally - I hate
microsoft - I dont' feel fun when I use any one of micrsoft product.
But in the business term - Microsoft products are qualified. Cheap to
support and run - some tools are never over kill such as SQL server. We
are using Oracle but I found only SQL server that just more than enough
and a lot cheaper to run (cost of DBA and Programmer, etc).
Webspere? Naaa .... we have been using Webspere when we started having
our own Web site and Intranet sites. Then we changed to Coldfusion in
the last 5 years. I found those suck! Cost too much money - when
Microsoft IIS5 or 6 are free also .NET - so, why not!!!!
Sure - a lot of Banks use J2EE - same reason! They rally want to stop
using it but they cannot because everybody started with J2EE and know
J2EE better than anything else!!!
Sad but true!
- 12
- 13
- No call for Ada (was Announcing new scripting/prototyping language)Josh Sebastian wrote:
> Maybe you just weren't very good at C++ templates. I don't mean to be
> insulting, but personal preferences do play a huge roll here. Unless
> someone can prove Ada's generics are Turing-complete, though (a quick
> google doesn't turn up anything), I'd say that we'll have to call C++
> templates more powerful.
Turing completeness is only one measure of power. And not a very
good one for measuring different systems of templates. If you use
templates for any sort of computational programming beyond some
very simple things you are stretching the rubber band beyond its
limit.
--
Thomas.
- 14
- Bug in IE with KB896727Recently we installed the MS05-038 as part of Windows Update. After this we
found out that our Code behind HTML application created in VJ++ is not
loading properly in IE 6 browser. We chekced all the Security settings and
they seem to work fine.
If we uninstall the Hotfix update ( KB896727 ) the application again loads
properly. Is there any work around for this issue. This is very critical.
Thanx
- 15
- Two column list with JOptionPaneYes, this is a homework question. My assignment is:
Modify the mortgage program using a graphical user interface to allow the
user to input the amount of a mortgage and then select from a menu of
mortgage loans: 7 year at 5.35%, 15 year at 5.5 %, and 30 year at 5.75%.
Use an array for the different loans. Display the mortgage payment amount.
Then, list the loan balance and interest paid for each payment over the term
of the loan. Allow the user to loop back and enter a new amount and make a
new selection, or quit. Insert comments in the program to document the
program.
I have been able to complete all of it except the part about list the loan
balance and interest paid. I used JOptionPane to do all the graphical user
interface and the menu of mortgages (see code below), but can't seem to come
up with a way to display the information in JOptionPane. If there is
another way that will work please point me in the right direction.
private static double option(double inputAmount)
{
// declares variables
double amount = inputAmount;
double monthlyPayment = 0.0;
boolean done = false;
// loop while not done
while (!done)
{
// declare and set size of/initializes array
double loanInfo[][] = new double [][] {{5.35, 5.5, 5.75},{7,15,30}};
// creates an array to hold the options
String smallList[] = {"7 year at 5.35%","15 year at 5.5%","30 year at
5.75%"};
String option = (String)JOptionPane.showInputDialog(null,"Which loan
option?","Options",JOptionPane.QUESTION_MESSAGE,null,smallList,smallList[smallList.length-1]);
for(int count = 0; count < smallList.length; count++)
{
// checks answers for match and sends info to calculate payment
if(option == smallList[count])
{
// calls method to calculate the monthly payment
monthlyPayment = calculationsPayment(amount, loanInfo[0][count],
loanInfo[1][count]);
done = true;
}
}
}
return monthlyPayment;
}
--
Jennifer Szonye
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