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- 2
- JAVA RMI register problemHi
Im making aplication with Java RMI ... everything was working till
yesterday. Today i started to run server and i cant make it :( (once
per 20 times it works)
The way i registering serwer is (im doing this from the folder where i
have my server class and java files + stub ):
start rmiregistry
java -Djava.security.policy=test.policy serwer
Sometimes it works ,sometimes not,espescially when i m starting to run
second diffrent process(serwer)
i got this error:
D:\workspace\serwer2>rmiregistry
java.rmi.server.ExportException: Port already in use: 1099; nested
exception is:
java.net.BindException: Address already in use: JVM_Bind
at sun.rmi.transport.tcp.TCPTransport.listen(TCPTransport.java:
310)
at
sun.rmi.transport.tcp.TCPTransport.exportObject(TCPTransport.java:218
)
at
sun.rmi.transport.tcp.TCPEndpoint.exportObject(TCPEndpoint.java:393)
at sun.rmi.transport.LiveRef.exportObject(LiveRef.java:129)
at
sun.rmi.server.UnicastServerRef.exportObject(UnicastServerRef.java:19
0)
at sun.rmi.registry.RegistryImpl.setup(RegistryImpl.java:92)
at sun.rmi.registry.RegistryImpl.<init>(RegistryImpl.java:78)
at sun.rmi.registry.RegistryImpl.main(RegistryImpl.java:322)
Caused by: java.net.BindException: Address already in use: JVM_Bind
at java.net.PlainSocketImpl.socketBind(Native Method)
at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:359)
at java.net.ServerSocket.bind(ServerSocket.java:319)
at java.net.ServerSocket.<init>(ServerSocket.java:185)
at java.net.ServerSocket.<init>(ServerSocket.java:97)
at
sun.rmi.transport.proxy.RMIDirectSocketFactory.createServerSocket(RMI
DirectSocketFactory.java:27)
at
sun.rmi.transport.proxy.RMIMasterSocketFactory.createServerSocket(RMI
MasterSocketFactory.java:333)
at
sun.rmi.transport.tcp.TCPEndpoint.newServerSocket(TCPEndpoint.java:64
9)
at sun.rmi.transport.tcp.TCPTransport.listen(TCPTransport.java:
299)
... 7 more
D:\workspace\serwer2>java -Djava.security.policy=test2.policy server
Liczba aktywnych watkow: 1
nazwa watku: main
Usluga druga niezarejestrowana: RemoteException occurred in server
thread; neste
d exception is:
java.rmi.UnmarshalException: error unmarshalling arguments;
nested excep
tion is:
java.lang.ClassNotFoundException: server_Stub
I didnt change anything in my source code...nothing...it just started
doing like this. Lately i was able to run two server process...and
everything was ok.... i was looking for a tip in google...but nothing
help...anybody knows how to fix it?
Tnx .
- 2
- Java, IPv6 and IPv4Envirounment: FreeBSD >=5.3 (earler FreeBSD I don't test), SUN Jdk 1.4 and 1.5
Exampe compilation for 1.4:
cd ${PORTSDIR}/java/jdk14 && make install -DWITH_LINUX_BOOTSTRAP -DMINIMAL -DWITH_IPV6
Exampe compilation for 1.5:
cd ${PORTSDIR}/java/jdk15 && make install -DWITHOUT_WEB -DWITH_IPV6
Problem:
If I don't enable WITH_IPV6, IPv6 cannot be accessed from Java programs, but I have to use the IPv6 & IPv4 in my network.
If IPv6 enabled in Java, I cannot connect to any IPv4 address even I set the system property `java.net.preferIPv4Stack=true'.
This is not good, because not all applications start allow add to java's arguments and/or envirounment this one (for example, Opera browser).
What I want to see:
When I enable IPv6, I can connect to IPv4 addresses
Wish:
add ability to autoload system properties, specific for my box (for example, from ${LOCALBASE}/etc/java.properties)
--
Best regards,
Arseny Nasokin
_______________________________________________
email***@***.com mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-java
To unsubscribe, send any mail to "email***@***.com"
- 2
- steganography using javaHi all,
I am actually new to this steganography thing.So I want to know if
there are any built-in methods and classes to handle stego in
Java.Also,I will very much appreciate if any of you have a sample code
or tutorial link.
Thanks all,
Anindya
- 5
- Got my Java console application finishedI finished my Java console application and it works
great in Windows and Linux. The problem right now is testing
it in Mac. I only have an old Mac Performa with OS8, and my Mac isn't reading
it right. Anyone know how to use a Java console program in pre-OSX Macs?
When I double click on the jar file it launches an editor now, does anyone know
how to launch it as a console application? I have the
Java Runtime Engine installed.
I believe want to associate the jar files with the Java Runtime Engine in
OS8...does anyone know how to do that with a Mac?
- 6
- getByName() and getAllByName(0getAllByName(String host) and getByName(String host) of the InetAddress
class return an array and a record respectively.
both does the same thing i presume and only differs in the return type.
therefore, which record does the getByName(..) return? the first, last,
random record?
- 8
- Core Java ( JAVA 2.0), J2EE, XML, Swing,XSL Opening in Chennai 3+YearsHi All,
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Are you willing to relocate to chennai
Regards
Latha HR Solutions
Chennai
- 8
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- 8
- RMI firewall issuesim doing an assignment on 'rmi client callbacks' in college and am
having difficulty with the windows firewall here. when i try and run
the server i get the following error msg:
Exception in thread "main" java.security.AccessControlException: access
denied (
java.net.SocketPermission 157.190.187.162:10005 connect,resolve)
at java.security.AccessControlContext.checkPermission(Unknown
Source)
at java.security.AccessController.checkPermission(Unknown
Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkConnect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at
sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(Unknown S
ource)
at
sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(Unknown S
ource)
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source)
at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown
Source)
at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown
Source)
at sun.rmi.server.UnicastRef.newCall(Unknown Source)
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
at java.rmi.Naming.rebind(Unknown Source)
at RMIServer.main(RMIServer.java:46)
iv been told i have to do something with a policy file and tried but
still doesn't seem to help. im not even sure if im duin it right.
any advice appreciated.
- 9
- VM -> secure Web Memory, Patent 863I'm releasing to Open Source an e-commerce local memory technique that
could reduce web congestion. A web-based operating system might be
possible. I am releasing this application also to Open Source.
To protect bandwidth for this technique, I applied for and received US
Patent 6,636,863 - the claims of this patent will be interesting to the
Open Source community.
Information:
http://209.87.142.42/webmemory/
Background:
* I originally published in June of 2000 on javaboutique
(http://javaboutique:internet.com/articles/shoppingcart/index.html) and
released the code for an e-commerce front end as Open Source.
* The article was mirrored on Linux Today
(http://linuxtoday.com/news/2000070200204OSSW).
* On Oct. 21, 2003, after a lengthy process including a quality review
by a number of patent examiners, I was granted US Patent 6,636,863
based on this work (to read the text, go to
http://patft.uspto.gov/netahtml/srchnum.htm and input the patent
number).
* Web Memory is secure, client-based, user-specific memory, based in
the JAVA VM present in computers, cell phones, Palm Pilots and chips.
It works in dotNET as well. The bandwidth for this technique has been
protected by patent. Is the method useful to the Open Source community?
Lane Friesen
e-mail: lanefriesen (at) hotmail.com
- 9
- java 3d pickingHi,
I have a very simple 3D-app with a couple of cubes in the scene which I
want to pick. I dont want to rotate, translate or scale them, I just
want to pick one of them and know which one was picked. (It's for a
battleship-like game, just want to choose a cube to know at which one to
"shoot" at.)
Could anyone suggest me a solution to the problem? All I want is to know
which object was picked. That's all. Hope someone can help, this work
has to be done really soon ..
thx for your kind help,
Angus
- 9
- javaws using a dllI have a small java application that reads the registry through the use
of a .dll. I am packaging this app in a jar and then deploying it via
java web start. When I run things locally, I have no problems, but when
I deploy it through javaws, I get errors about accessing methods within
the .dll. Is there any trick to creating a jar with the dll for
deployment via javaws.
Thanks
- 9
- Opinions on complexityI am thinking of developing a network application for my PhD, and it
involves (among other stuff) my own implementation of the TCP/IP
protocols. So, at the state the Java 1.5 version is, I need the use of
JNI for the RAW sockets. (Although the use of Java is not a MUST, I am
more experienced at it than I am at C/C++ or other useful programming
language.)
By now, I've managed to almost-implement the Ping: I send the
appropiate ICMP Echo Request to 127.0.0.1 (with its well-formed IP
header, ICMP header and data, based on the RFCs), but I still don't
"hear" the ICMP Echo Reply from my application, (although I can see
this ICMP Echo Reply going back when I capture the network traffic of
my loopback interface with Ethereal). But it's not the point of my
entry in this group to find a solution on this (it must be something
odd in the C native code I have to fix).
The thing is that, although I find this project feasible, I don't
really know how complex may it become (I am sure the TCP/IP stack is
not a trivial thing) and, unfortunately, I cannot spend as much time as
I would like on this (you sure know how it works: I've got a job from 8
to 17:30, which is not bad at all, but it doesn't let me too much spare
time).
So here goes my question: do you think it is a feasible project for
developing it on my own in a reasonable time?, do you recommend me
"opening" it on sourceforge or something like that, and share it with
other thinking heads?, are you one of those thinking heads :) ?.
Thanks in advance for your comments,
_Hobbes.
____________________________
"I must've put my finger on it." - Calvin
- 10
- 12
- cryptix / Websphere issueI'm using the Cryptix library (current version) on WAS 5.0
Everything works fine until I try to update the ear.
This is the error:
java.security.InvalidKeyException: Not an ElGamalKey
[2/14/05 14:25:43:609 CST] 5d491a6 SystemErr R at
cryptix.jce.provider.elgamal.ElGamalCipher.engineInit(ElGamalCipher.java:134)
[2/14/05 14:25:43:610 CST] 5d491a6 SystemErr R at
javax.crypto.Cipher.init(Unknown Source)
[2/14/05 14:25:43:610 CST] 5d491a6 SystemErr R at
cryptix.openpgp.algorithm.PGPElGamal.encrypt(PGPElGamal.java:536)
[2/14/05 14:25:43:610 CST] 5d491a6 SystemErr R at
cryptix.openpgp.packet.PGPPublicKeyEncryptedSessionKeyPacket.encrypt(PGPPublicKeyEncryptedSessionKeyPacket.java:153)
[2/14/05 14:25:43:610 CST] 5d491a6 SystemErr R at
cryptix.openpgp.provider.PGPEncryptedMessageBuilder.engineBuild(PGPEncryptedMessageBuilder.java:278)
[2/14/05 14:25:43:610 CST] 5d491a6 SystemErr R at
cryptix.message.EncryptedMessageBuilder.build(EncryptedMessageBuilder.java:253)
[2/14/05 14:25:43:610 CST] 5d491a6 SystemErr R at
com.eonegroup.custom.mayco.util.QbMaycoPGPEncryptor.encrypt(QbMaycoPGPEncryptor.java:158)
If I stop/restart the application server, everything is fine. Just
happens on .ear updates!
Any suggestions?
Thank you.
- 12
- [Java-Printer]My printers are not senn by java appsThis problem apparently has nothing todo with Java applications : I am on
Linux and apparently now any Java apps run do not see my printer list as
handled by CUPS.
Before it worked ; I think it has to do with the JDK installed ?
Any ideas will be wellcome.
Thanks.
|
| Author |
Message |
littlebeam
|
 Posted: 2006-3-9 12:52:00 |
Top |
java-programmer, Must the View of Struts be a JSP/HTML?
Can it be a servlet? Thanks
|
| |
|
| |
|
josh.s17
|
| Posted: 2006-3-9 18:25:00 |
Top |
java-programmer >> Must the View of Struts be a JSP/HTML?
You can return your response directly from a servlet if you wish rather
than forwarding to a JSP.
|
| |
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Index ‹ java-programmer |
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- Storing and parsing variable length stringsHi folks...
I have an application which needs to store variable-length strings (up
to 24 characters long) that must then be matched according to prefix.
That is, whenever a prefix is given, the application has to be able to
retrieve all stored strings that start with this prefix. Conversely,
the program has to be able to store strings in such a way, so that
prefix-based retrieving is fast and accurate (i.e., all relative
strings are located and retrieved). Doing this linearly is obviously
slow and inefficient.
So, what is the best way of implementing this functionality in J2SE 1.4
or later? Or, if there is no ready (preprogrammed) way of doing it
properly in the standard distribution, are you aware of any open source
implementation (e.g., tree or something similar)?
Thanks,
Dimitris
- 3
- One class in several filesHello
Is possible make one class in several files ?
I would like do this for organization reason.
Thanks in advice
GG
- 4
- Is it possible to design Audio CD player by using Java only?Never tried it myself, but have you looked at java media api. i am thinking
if reading file from the cd in a normal way (binary stream) and then
feeding it to media api can do the job....!!!
Good luck anyways :-)
"MiLF" <email***@***.com> wrote in message
news:bdesn5$rki$email***@***.com...
> I am not expecting how fancy the CD player will be, but basic function is
> enough.
>
>
- 5
- 6
- 7
- On Java and C++On 28 Apr 2006 00:59:19 -0700, "al pacino" <email***@***.com>
wrote, quoted or indirectly quoted someone who said :
>improve your programming skills and what better tool to do that than
>using c++.
You might find the work of W. Edwards Deming interesting. He was the
man who taught the art of quality control to the Japanese.
He argues there is no point in exhorting people to be better. You
have to change the environment so they naturally and without
additional effort produce better results.
C++ allows well made programs but does little to insist on or even
encourage them. The beautiful quality remains a theoretical goal
rarely achieved. It is a bit like an impressive high wire act.
You can see the effect. If you look over C++ code you will see a huge
range of quality. If you look at Java code it is much more uniform.
The artisan in you yearns for the sporadic brilliance, but the manager
prefers the uniformity.
As a programmer you see the effect. In Java, a higher percentage of
trouble is caught at compile time. Once you have the compiler happy,
usually the code works. Because of the null pointer checks, enforced
initialisation and subscript checks, if a program works at all there
is a higher probability it is working correctly than the equivalent
C++ program. That means a poor programmer who writes buggy code has a
bigger safety net with Java to watch over him to catch these errors.
--
Canadian Mind Products, Roedy Green.
http://mindprod.com Java custom programming, consulting and coaching.
- 8
- USB support for Java (Win32)Does anybody know any win32 usb library for java that I can use to
communicate with device. Application will communicate with device
using USB in the same way as RS232 - for control and management.
Thanks,
Dimitry
- 9
- Seaching word in text file using JAVA.Hello,
I have a problem on seaching word in text file using JAVA.
Below are the sample code i have written for searching word honda,
1990 and imran.I also want to save word honda in static string name
classtring. For first line i use this java code to save word honda in
classtring and its working well. I have a problem to save second line
1990 and imran.
The technique i use is searching until "=" and save word after "=".Can
anyone give the idea and java code.
Thank you...
------------java code ------------------
content = f.readLine();
// find class name
StringTokenizer s = new StringTokenizer (content,"=");
while (s.hasMoreTokens())
{
String string_val = s.nextToken();
if (string_val.trim().equals("classname".trim()))
{
classString=s.nextToken();
}
}
------- data text file -------------
name_car = honda
year = 1990
owner = imran
- 10
- Save gif file from the URLHello,
I just want to save on disc a gif file taken from the internet (i.e.
save as logo.gif the image
http://www.google.com/intl/us_ALL/images/logo.gif ). Is it possible
without much effort (I have read about the extra & not free libraries
but I hope there is a simple way to do so (just read bytes and write
bytes - no modification).
Regards. Marko
- 11
- java & CGII am a programming student attempting a quoting system (similar to what
geico does) for my job. I've written a program that is executable from
the command prompt that returns the expected values, but I need it to
work with a webpage.
I want the user to be able to input data, the program process it, and
then display the results. I've found code that uses "POST" to get the
data to a program, but how does the program process it and how do I get
it back into another web page? I've searched the web but I'm having
difficulty finding answers.
Thanks in advance to anyone who can help.
- 12
- open source poker codeHi,
Bit of a long shot I imagine, but has anyone tried to use:
http://sourceforge.net/projects/pokersource/
They promise some sort of java wrapper in the readme, but all I have
found is c code.
I guess there's a chance to use JNI to call the c stuff but I suffer
from a very rare and extreme form of laziness that prevents this (and I
can't understand the code!).
cheers
Andy
- 13
- Paint methodI'm still new to Java, so this may be a pretty pathetic question.
Anyway, I have a paint method in an applet that paints something and
then when a certain button is pushed it needs to draw more (rectangles
and strings to be precise). However, the paint method is above, and
the scope of 'g' does not extend into the actionPerformed method. Can
'Graphics g' be declared outside the paint method, and if not is there
a way to make it work, while rewriting as little as possible?
- 14
- how to get the content from an URL?Hi people,
I have write some code that outputs the content of an URL in
System.out,
which is really trivial using the following code:
URL url=new URL("http://www.some-url.com");
URLConnection c=url.openConnection();
BufferedReader is=new BufferedReader(new
InputStreamReader(c.getInputStream()));
String line;
while ((line=is.readLine())!=null) {
System.out.println("line: "+line);
}
But, some URLs have javascript code embedded that redirects the page
or refills
it in some way when it's automatically run by the browser. I want to
have the HTML code after executing that javascript code, exactly as
you can get it from your internet browser's "view source-code", not as
I'am getting it by now.
The cuestion is...
there is ANY workaround to this issue? some way to run javascripted
pages from
java? some way to deliver it to a web browser, or something nicer?
thanks to everyone,
hernan rancati, cesare.
- 15
- doubtsin javaHelloo
I am a newer one to java. just started to study it. I am getting so
many doubts in the language. I don have any previous knowledge in
progamming.
I would like to know more about JAVA and its applications in the real
world.
Where can I find jobs after studyig it??? From where will I get
practice programs in it???
Thanks in advance
Deepa
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