| Can't read JAAS config from JAR |
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- Freelance programmer / developerHello,
I am software developer looking for freelance or Full Time work, do you
have any work that need to done.. buzz me at johnleox @ gmail.com
my skill sets:
VB,
ASP (VBScript & Javascript),
SQL Server,
Access (VBA),
Excel (VBA),
.NET(ASP.NET / C#)
Oracle &
Crystal Reports
I can work on migration projects, supporting exsisting project and
looking out for new project.
If location or place of work is not important for you then buzz..
waiting for your work.
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- Get IP tomcat serverHi !
I am using Tomcat and i would like to get the host IP from the
servletContext object. Does anybody know how to get it ?
Thank you for your help
Best regards
Sylvain Caillet
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- JTable cell editor update several columnsI have a JTable with multiple columns line
let's say : name, cat, subcat, lang
I would like a cell editor on name ;cat , subcat and lang read only
when I edit name whenever I choose a mame that belongs to
cat,subcat,lang the cat,subcat,lang cells are updated .....
tanks a lot
patrick
jdk1.6.0_02/linux
- 4
- newbie Threads and JDialog Hello all
I've been working with Java for one year and I'm a newbie with
threads, I have the following problem which I suppose you experts can
help:
I have a JDialog extension which I create some JTabbedPane with
some tables. This JDialog and these tables, send data to other class
which performs some calculation. Now I have a problem and I suspect
that its related with threads.
The button actionPerformed listener call a JDialog method that send
data and also "tells" the table to send its data to the calculation
class. After the table send the data, the constructor of the external
calculation programm fails. I'm listing in a reduced way my code:
In the Main (just the part related with the JDialog)
// in the declaratins:
public InputsIntegrationDialog inputIntDiag;
.
.
.
if (operationIndex == INTEGRATION){
if(inputIntDiag == null){
inputIntDiag = new InputsIntegrationDialog(this, getGraph());
}
else
inputIntDiag.setVisible(true);
The InputsIntegrationDialog class resumed:
public class InputsIntegrationDialog extends JDialog implements
ActionListener{
public InputsIntegrationDialog(Window owner, VRGraph grap1) {
super();
this.tabbedPane = new JTabbedPane();
fixedCostsTable = new IntegrationTable();
variableCostsTable = new IntegrationTable();
variableCosts = makeTextPanel(res.getString("variableCosts"));
tabbedPane.addTab("variableCosts",variableCostsTable );
Box okCancel = Box.createHorizontalBox();
ok = new JButton(res.getString("Ok"));
ok.addActionListener(this);
runBut = new JButton(res.getString("Run"));
runBut.addActionListener(this);
. ..// box layouts etc...
Container contentPane = getContentPane();
contentPane.add(tabbedPane, BorderLayout.CENTER);
contentPane.add(vertBox, BorderLayout.PAGE_END);
this.pack();
this.setVisible(true);
}
public void runOPT(){
// initialize the calculation class (hiden)
//send the data from the tables to the calculation
variableCostsTable.sendDataToOpt(data 1, data 2);
// in the line bellow the problem happens!!!!!!!!!!
solver1.setNLP(nlp1.getNLP());
}
public void actionPerformed(ActionEvent e){
System.out.println("Action: " + e.getActionCommand().toString() );
if(e.getActionCommand().toString() == "Ok"){
this.setVisible(false);
}
else if(e.getActionCommand().toString() == "Run"){
// This Line calls runOpt() and inside runOPt the crashes happen
int res = this.runOpt();
if( res1 >= 0){
JOptionPane.showMessageDialog(this,
"Optimization sucessful","Message");
}
else
JOptionPane.showMessageDialog(this,
"Optimization NOT sucessful","Error");
this.setVisible(false);
}
}
}
- 4
- Weird Static IssuePlease take a look at the following code section. In this module the
static "qt" becomes null when the constuctor is fired, very similar
code works find in other places in my program. I don't think the
QueryTools class is a problem because I can use the code elsewhere.
public class Authorization
{
static public String TABLE ="authorization";
static private String POOL_NAME = "mysql-invoice-system";
static private QueryTools qt;
static
{
System.out.println("Static Section " + POOL_NAME);
QueryTools qt = new QueryTools(POOL_NAME);
System.out.println(qt);
System.out.println("Static Section End " + POOL_NAME);
}
public Authorization()
{
System.out.println("Authorization Constructor");
System.out.println("QT=" + qt);
}
Here is the output from Netbeans:
run:
Static Section mysql-invoice-system
com.ciorent.HFCConnectionPool.QueryTools@18e2b22
Static Section End mysql-invoice-system
Authorization Constructor
QT=null
Here is the calling code:
Authorization a = new Authorization();
try
{
a.createAccount("email***@***.com", "test4200", 10000);
}
catch (Exception e)
{
System.out.println(e);
}
System.exit(1);
I am going to bet this is something simple that I am missing, hopefully
someone will be able to point out my error.
Thanks
HFC
- 6
- 7
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- Also, about JColorChooserIs it possible to edit which colors are available in a JColorChooser or
is it simpler to build my own popup window with color selections?
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- JTextArea size limitiing question ...I'm using a JTextArea within a JScrollPane within a JViewPort. I am
using the JTextArea to mimic a HyperTerminal like terminal emulation
interface. When I set up the JTextArea I specify the viewable rows and
columns, but since it is inside the JScrollPane it obviously can grow
"infinitely" large (and eventually throw a heap memory exception). My
desire is to not allow this, but was hoping that there was something
within Java itself to passively limit the size of the JTextArea.
Currently I use it to receive diagnostics (through a serial
communications port) from an embedded device, so during testing I could
conceivably let this run for several days (which will most certainly
induce a heap memory exception). I am also logging all of the
diagnostics to a file so I have no need for the JTextArea to grow
"infinitely" large.
So is there a way to passively limit the ultimate size of a JTextArea
that I am missing or do I have to actively determine its size and trim
it down some how (and if so, any suggestion on how to delete "old" data
in a JTextArea)?
Thanks, in advance, for any help.
- 11
- setFont() on solarisHi,
In one of my methods, I have a call like:
label.setFont(new Font("Arial", Font.PLAIN, 9));
This call works fine on windows but not on solaris. Moreover, the
label's text gets truncated when it shows up ("Applications" shows as
"Applicati") I iterated through the fonts via
GraphicsEnvironment.getAllFonts() and Arial seems to be available to
the java graphics environment on solaris.
How do I get arial font on solaris and not cause the truncation? Any
suggestions?
Thanks.
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- prohibited methodwhat does it mean when we say ,
in EJB session bean
"The bean instance calls a prohibited method of its session context."
what does it mean by prohibited method ? who prohibits ? how can we
set this prohibition ?
thanks
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out if it is too "heavyweight" for use in a thin client.
tkx
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means to poll a flat file.
I need to have my app look at a flat file, say, every second or so, and read
any data that may have been appended to it.
Wondering what others might consider an efficient means of doing this in
Java. Would it be wise to merely look at the file size everysecond or so,
and, if that has changed, to then read it, starting from that byte which was
the previous size of the file on the previous polling a second ago?
Is there a more efficent way to do this? Thanks, Ike
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get it to open an m files and therefore run a functions using thev
arrays. How do I get
it to open a certain m file, I have tried to set the path in matlab
but that doesn't work.
Please help.
--
Message posted via http://www.javakb.com
- 15
- have troulbe when learn java tutorial's network socket partHi everyone:
Try fewest word: from Java Turotial->Custom Networking->All About
Sockets->Reading from and Writing to a socket, the following program:
import java.io.*;
import java.net.*;
public class EchoClient {
public static void main(String[] args) throws IOException {
Socket echoSocket = null;
PrintWriter out = null;
BufferedReader in = null;
try {
echoSocket = new Socket("taranis", 7);
out = new PrintWriter(echoSocket.getOutputStream(), true);
in = new BufferedReader(new InputStreamReader(
echoSocket.getInputStream()));
} catch (UnknownHostException e) {
System.err.println("Don't know about host: taranis.");
System.exit(1);
} catch (IOException e) {
System.err.println("Couldn't get I/O for "
+ "the connection to: taranis.");
System.exit(1);
}
BufferedReader stdIn = new BufferedReader(
new InputStreamReader(System.in));
String userInput;
while ((userInput = stdIn.readLine()) != null) {
out.println(userInput);
System.out.println("echo: " + in.readLine());
}
out.close();
in.close();
stdIn.close();
echoSocket.close();
}
}
But it says "Don't know about host: taranis". If I change it to my
computer's name, it says "Couldn't get I/O for the connection to:
taranis.";
So how can I open echo service on a computer? Thanks.
|
| Author |
Message |
Nick de Graeve
|
 Posted: 2006-4-13 20:59:00 |
Top |
java-programmer, Can't read JAAS config from JAR
We have an application that uses JAAS for security.
Until now the JAAS config file was in a folder (conf/) and the
application just ran fine.
To prepare for the deployment of the application with Webstart I packed
the folder with the config file in the application's JAR. Now JAAS
can't seem to find the file anymore.
Working:
|--application.jar
|--conf/
|--auth.conf
Failing:
|--application.jar
|--conf/
|--auth.conf
Both have the same manifest:
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.6.5
Created-By: 1.5.0_04-b05 (Sun Microsystems Inc.)
Main-Class: com.fpc.nokeos.core.client.launch.Launcher
Class-Path: . conf
I also tried expliciitely adding "conf/auth.conf" to manifest but it
didn't work either.
The stacktrace I get is
08:57:42,250 - ERROR: [NokeosClientSecurity] Could not connect to the
server.
Please check your network connection.
java.lang.SecurityException: conf/auth.conf (No such file or directory)
at
com.sun.security.auth.login.ConfigFile.<init>(ConfigFile.java:97)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at
java.lang.reflect.Constructor.newInstance(Constructor.java:494)
at java.lang.Class.newInstance0(Class.java:350)
at java.lang.Class.newInstance(Class.java:303)
at
javax.security.auth.login.Configuration$3.run(Configuration.java:216)
at java.security.AccessController.doPrivileged(Native Method)
at
javax.security.auth.login.Configuration.getConfiguration(Configuration.java:210)
at
javax.security.auth.login.LoginContext$1.run(LoginContext.java:237)
at java.security.AccessController.doPrivileged(Native Method)
at
javax.security.auth.login.LoginContext.init(LoginContext.java:234)
at
javax.security.auth.login.LoginContext.<init>(LoginContext.java:403)
at
com.fpc.nokeos.core.client.security.NokeosClientSecurity.login(NokeosClientSecurity.java:46)
at
com.fpc.nokeos.core.client.launch.Launcher.checkLogin(Launcher.java:89)
at
com.fpc.nokeos.core.client.launch.Launcher.main(Launcher.java:66)
Caused by: java.io.IOException: conf/auth.conf (No such file or
directory)
at
com.sun.security.auth.login.ConfigFile.init(ConfigFile.java:157)
at
com.sun.security.auth.login.ConfigFile.<init>(ConfigFile.java:95)
... 16 more
How can I make it work?
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- JLint port
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Hi there,
I've been looking at the JLint port (java/jlint). This port is flagged
as BROKEN in FreeBSD 5.x. Looking at the JLint homepage I see that
version 3.0 is current (the port is 2.3). I have easily managed to
compile and install JLint 3.0, only a minimal patch is required (to
disable the bool->int mapping in types.hh). Would someone mind upgrading
this port? I send an upgraded port with this email. Please have a look
at it, comment it and check it in if you like.
Best regards, Roman
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- 2
- TCP client application does detect network failureHi,
This is a behavior of the TCP socket in Java I dont' understand:.
Let say we have a simple client/server application running on TWO different
machines.
The client send bytes to the server.
The server recieved the bytes and wait for about X sec.
During this waiting time, we disconnect the server from the network (just by
unplugging the server network cable).
After the waiting time the server is aware of the network failure (a
SocketException is thrown : connection reset, because it is trying to send
the response)
But on the client side it is still stuck on a "rcv =
commandInput.readLine();" statement (see after for the complete code), it
will never be aware of the network failure !!! Even after one hour the
client is still waiting to read something on closed socket. Is this the
normal behavior ?
In reality we are dealing with an application that use the FTP server to
server mode (we are controlling only the command socket, the data transfer
is made by the servers). We have to transfer huge file, thus we can not set
up a time out. If the last scenario occurs, some of our transfers are stuck
and it is not possible for us to detect the failure. The client will wait
for ever the response.
Does anybody have already deal with that ?
Below is the simple client and server I made in order to make my experiment.
The client just read the keyboard input and send it to the server; the
server just echo the request except if the request
is 'wait X', in this case it will wait for X sec before responding.
Thanks by advance,
Olivier MERIGON
CLIENT:
----------------------------------------------------------------------------
-------
package com.iratensolutions.test.ftp;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
/**
* A Client/Server application to test the network failure behavior with TCP.
* This the client part. It just sends the keyboard input to the server.
* @author Olivier MERIGON
*/
public class TestNetworkFailureClient {
public static void main(String[] args) {
if (args.length != 1) {
System.out.println("usage: java
com.iratensolutions.test.ftp.TestNetworkFailureClient serverAdress");
}
Socket commandSocket = null;
BufferedReader commandInput;
BufferedReader keyboardInput;
PrintWriter commandOutput;
try {
commandSocket = new Socket(args[0], 666);
commandInput = new BufferedReader(new
InputStreamReader(commandSocket.getInputStream()));
keyboardInput = new BufferedReader(new InputStreamReader(System.in));
commandOutput = new PrintWriter(new
OutputStreamWriter(commandSocket.getOutputStream()));
} catch (Exception e) {
e.printStackTrace();
return;
}
System.out.println("CLIENT STARTED");
String snd;
String rcv = null;
try {
do {
System.out.print("KEYBOARD: ");
snd = keyboardInput.readLine();
if (snd != null) {
commandOutput.println(snd);
commandOutput.flush();
System.out.println("SND: " + snd);
rcv = commandInput.readLine();
System.out.println("RCV: " + rcv);
}
} while (rcv != null);
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
--------------------------------------------------------------------------
SERVER
----------------------------------------------------------------------
package com.iratensolutions.test.ftp;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.net.ServerSocket;
import java.net.Socket;
/**
* A Client/Server application to test the network failure behavior with TCP.
* This the server part. The server can wait X second after responding to a
request.
* If a wait request is received, the server just answer the time waited
after
* the requested wait time, otherwise it respond immediatly the request
number.
* usage: wait intNbSec | any text
* @author Olivier MERIGON
*/
public class TestNetworkFailureServer {
public static void main(String args[]) {
ServerSocket echoServer = null;
String line;
DataInputStream is;
PrintStream os;
Socket clientSocket = null;
try {
echoServer = new ServerSocket(666);
System.out.println("SERVER STARTED");
} catch (IOException e) {
System.out.println(e);
}
while (true) {
try {
clientSocket = echoServer.accept();
System.out.println("Handling new client...");
is = new DataInputStream(clientSocket.getInputStream());
os = new PrintStream(clientSocket.getOutputStream());
int loopId = 0;
do {
line = is.readLine();
System.out.println("RCV: " + line);
//Handle "Wait" command
if (line.trim().startsWith("wait")) {
String[] tab = line.split("\\s");
boolean ok = false;
try {
int nbSec = Integer.parseInt(tab[1]);
System.out.println("...waiting for " + nbSec + " sec.");
try {
Thread.sleep(nbSec * 1000);
} catch (InterruptedException e1) {
}
String resp = "...end of wainting periode of " + nbSec + " sec.";
os.println(resp);
System.out.println("SND: " + resp);
ok = true;
} catch (Exception e) {
ok = false;
}
if (!ok) {
String resp = "usage: wait intNbSec | any text";
os.println(resp);
System.out.println("SND: " + resp);
}
//Handle "normal" action
} else {
os.println("# " + loopId);
System.out.println("SND: # " + loopId);
}
loopId++;
} while (line != null);
} catch (IOException e) {
System.out.println(e);
}
}
}
}
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2. If it does not exist where can I download it and where should I put it?
3. If it exists then why doesn't this code run? I've even tried to register
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thx.
import java.sql.*;
public class JDBCThin
{
public static void main(String[] args)
{
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
}
catch ( ClassNotFoundException e )
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System.out.println(e.getMessage()) ;
}
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Please read on:
We are doing a survey to collect information on middleware usage
and some features of the middleware. Through the survey data as one
source of information, we can do research on middleware, and software
engineering trend analysis and prediction.
Please take out some minutes to fill in this survey. Please this is
really important survey.
Suvey link:
http://swtech.njit.edu/middlewaresurvey/
As this group includes Students/Faculties as well as Professionals,
please fill up the Individual survey and other corresponding surveys.
I am sure you guys will take part and will help this research.
Give little time to make this survey successful.
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My question: To what do I set outFile (File type) to make the
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public static void printData(File dir, File outFile)
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try
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if (outFile == null)
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outFile = ?????; // Default is standard output (System.out)
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. . .
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--
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public void run(){
JPanel panel = new JPanel(); // create pane content object
JLabel prompt = new JLabel("Processing log files");
panel.add(prompt);
Container contentPane = myFrame.getContentPane();
contentPane.add(panel);
myFrame.setTitle("Processing logs...Please Wait");
myFrame.setBounds(100,100,350,75); // position frame
myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
myFrame.toFront();
panel.add(prompt);
myFrame.setVisible(true);
myFrame.pack();
System.out.println ("pack1 done");
myFrame.repaint();
myFrame.pack();
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The Clients connected to JBoss are non-web Swing Clients.
If One Clients changes the data on a bean/in the db, all the other clients
connected to the jboss have to be informed about the change, so they can
update der UI.
On a standalone Java-App i would use listeners to solve this, but as im new
to j2ee i have no idea how to realize this with j2ee and jboss.
It would be great to get some ideas on how to solve this problem.
greets from Germany
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I am new to xdoclet and would like to convert my existing EJB source
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My current application server is Pramati and i am migrating to
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descriptors for each EJB. I goggled but didnt find a complete example
using xdoclet. The information seems to be scattered.
I would like to know the steps for the following ( For eg I have a
MyXYZBean.java )
1) Adding appropriate xdoclet tags(Jboss specific) to this source file
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2) Steps to generate the Remote, home etc interface source files ( Eg
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3) Steps to generate JBoss specific descriptors (jboss.xml, ejb.jar
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4) A task to be included in my build.xml which takes care of steps 1) ,
2) and 3) appropriately.
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This applies to WebLogic 7 but probably is generally the case.
I have a Collection of Local objects which I want to remove(). So I thought
collection.clear() would be sufficient and the container would do the job.
But it doesn't.
So, I iterate thru the Collection and call remove() on each Local object.
This throws a ConcurrentModificationException because the container does
remove the element from the Collection when calling remove() on the Local
object.
The only solution seems to iterate over the collection, put the objects to
be deleted in another collection, iterating over that collection and
calling remove() there on any Local object.
Well, there must be something I misunderstood about EJB, right?
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