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Index ‹ java-programmer
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- 1
- Swing textboxes can't get focus after JFileChooserHi Java guru's,
I have a swing form that has a text field where a directory name can
be entered. Just to its right I have a button that will open the
JFileChooser dialog to allow selection of the directory name from a
dialog.
I can go in and type the directory name into the textbox by hand. So
far, so good.
I can go in and press the button, have the dialog appear, choose a
directory, and have the textbox programatically updated. Again, this
works.
But, if I press the button and choose a directory, I then lose the
ability to use my mouse to access any textboxes on my form. I am able
to use the tab button to move to, and update the textboxes.
I can't then click my mouse on a textbox and be able to enter in data.
Instead, I have to tab to it. The mouse also cannot be used to select
data within a textbox by double clicking or highlighting it. I CAN
hold down the mouse button and scroll right or left and have the
textbox's data shift if the text exceeds the width of the textbox.
But, the textbox appears to be disabled.
Interestingly enough, I AM able to use my mouse to click other BUTTONs
on the page.
So, its just the textboxes that seem affected.
Anyone have a solution or hints?
(btw, I'm using Java 1.4.2.x)
TIA
Here is my button listener:
public void actionPerformed(ActionEvent event)
{
if (event.getSource() == btnRun)
if (areAllFieldsPopulated())
{
lblStatus.setText("Processing");
ExportFunctionalAreas exportFunctionalAreas = new
ExportFunctionalAreas();
exportFunctionalAreas.ExportXml(txtInputFileName.getText(),
txtOutputFileName.getText(), txtElementName.getText());
lblStatus.setText("Finished");
}
else
{
}
else if (event.getSource() == btnSelectFile)
txtInputFileName.setText(FileHandler.OpenFileDialog(txtInputFileName,"Open
Input File","xml","XML files (*.xml)"));
else if (event.getSource() == btnOutputDirectory)
txtOutputFileName.setText(FileHandler.OpenDirectoryDialog(txtOutputFileName));
}
and here is the open directory dialog code:
public static String OpenDirectoryDialog(Component Owner)
{
JFileChooser chooser = new JFileChooser();
chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
if (JFileChooser.APPROVE_OPTION == chooser.showOpenDialog(Owner))
return chooser.getSelectedFile().getPath();
else
return null;
}
- 1
- Unreferenced enclosing class instance ?Hi,
I have below question about below enclosing class instance:
For below class
class MyOuter {
//.. say, some variables and methods defined here
class MyInner {
//.. say, some variables & methods defined here
}
}
pulic class TestNested {
public static void main(String[] args) {
MyOuter.MyInner inner = new MyOuter().new MyInner();
//.. suppose some time & memory consuming code executed afterwards
but inner not assigned 'null'
}
}
If compiled class TestNested ran & garbage collector did run at some
time before program terminated, will the MyOuter instance created in
first line of main be garbage collected ? Is there any method to
re-bind that created MyOuter instance with a reference variable after
the line "MyOuter.MyInner inner = new MyOuter().new MyInner();"
executed (besides split the statement into two like
MyOuter outer = new MyOuter();
MyOuter.MyInner inner = outer.new MyInner() ? :)
- 1
- programi would to get the solution for the following program.
Write a complete Java program that does the following:
Prompt the user to type in the hour and minute departure time for an
airline flight.
Prompt the user to type in the hour and minute arrival time for that
flight. (Note: assume that the flight occurs in just one afternoon, leaving
at or after 1:00 and arriving at or before 12:59. Assume also that the user
provides valid input values!)
Calculate the total number of minutes the flight will be in the air.
Display the departure time, the arrival time, and the flight time (in
minutes) of the flight.
--
Message posted via http://www.javakb.com
- 1
- Netbeans V5......Tomcat just won't start.. Why??My appologies if this is not the correct forum but I am desperate.
I have downloaded Netbeans V5.0 with JDK 1.5.0_05. Tomcat will not start.
It just seems to hang until it times out. If anyone else has had this
problem OR can direct me to a possible solution I would be deeply grateful.
PS Netbeans refuse to answer my emails!!
- 2
- How to get Cell ID from J2ME location API, on modern phones!Hi all, I wanted to know how to get the Cell ID using the J2ME
location API? I have found so much sites on the net bu they're all
since 2005 or 2003, and none of them contains a clear example (or even
basic idea) how to take the Cell ID. What I've tryed:
set the Criteria power management to low, so it doesn't search for
bluetooth. Everything else I've left as it is (now limits). It stops
the app for 60 secs (that's what I've set) and then it pops exception
- LocationException, which means it can't find info or timeout. I've
tested with longer times - same result. I'm sure the operator supports
it and the phone supports it (N73).
Please give an idea, please!
Thanks in advance...
- 2
- XML Validation From Flat File?Hi All,
I am trying to convert some Flat Files (Fixed-Width and CSV) to XML
files (Using Java) and I was wondering what is the best way to validate
the data in conversion time (in term and data type, size, missing
fields, etc.)? I know javax.xml.validation helps but is this the
easiest way? Is there any UI tool to help generating these Schema
files?
Thanks in Advance,
Homer
- 3
- 9
- M-I'5.P ersecution - Capital Radi o - Chris T arrant-=-=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=
-= Capital Radio -. Chris Tarrant -=
-=-=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=
Capital Radio DJs have been "in on it" from the start.. One of the first
things. I heard in the summer of 1990 was from a Capital DJ who said, "If
he listens to Capital then he can't be all bad". (supportive, you see. We're
not bastards). Much. of what came over the radio in 1990 is now so far away
the precise details. have been obliterated by time. No diary was kept of the
details, and although archives if they. exist may give pointers, the
ambiguity of what broadcasters said would leave that open. to
re-interpretation.
In spring 1994, Chris Tarrant on his Capital morning show made an aside. to
someone else in the studio, about a person he didn't identify.. He said,
"You know this bloke? He says we're trying to kill him. We. should be done
for. attempted manslaughter".
That mirrored something I had said a day or. two before. What Tarrant said
was understood by the staff member in. the studio he was saying it to; they
said, "Oh no, don't say. that" to Tarrant. If any archives exist of the
morning show (probably unlikely) then. it could be found there; what he said
was so out of. context that he would be very hard put to find an explanation.
A couple of days later, someone at the site where I. was working repeated the
remark although. in a different way; they said there had been people in a
computer room when automatic fire. extinguishers went off and those people
were "thinking of suing. for attempted manslaughter".
Finally, this isn't confined to. the established radio stations. In 1990
after I had listened to. a pirate radio station in South London for about
half an hour, there was. an audible phone call in the background, followed
by total silence for a. few moments, then shrieks of laughter. "So what are
we supposed to say now?. Deadly torture? He's going to talk to us now, isn't
he?", which meant that they could. hear what I would say in my room.
5716
- 9
- 9
- FreeBSD / Eclipse 3.1 / WTP 0.7Hello,
As port of Eclipse 3.1 is already available, I was trying to install Eclips=
e=20
WTP 0.7 to improve my work with JSPs and Servlets. I installed first: GEF,=
=20
EMF, and Java EMF Model Runtime: JEM-SDK-1.1.zip (this is the problem) from=
=20
WTP site, but I have still error saying that there is no such plugin as=20
org.eclipse.jem.util - I checked plugins directory and there is such plugin=
=20
installed, in manage configuration it is shown as disabled - that's probabl=
y=20
mean that this version is incompatible with FreeBSD.
Is there anybody who installed WTP with success on Free, and can share=20
his/her knowledge on this topic? Anybody work on porting JEM and WTP to=20
FreeBSD?
Best Regards,
Lee
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- 9
- Full Casino Source Codes For JUST $9,900We'd like to know if you or your company is interested in buying online
casino software.
We are now selling full casino sourcecodes for crazy cheap price, $9,900.
Yes, it's not $99,000. IT'S JUST $9,900 for full casino sourcecodes
including software, flash, database and everything we have.
With full casino sourcecodes,
You own the sourcecodes
There are no royalties to pay
You can setup as many casino sites as you want, without additional cost.
You can license the software for additional revenue opportunities
You can modify software, flash and database anytime at your own will.
You can do whatever you want.
No download flash casino software backed by java technology.
Stunning 3d graphics and sound add quality to our casino software.
The casino software includes the popular games like roulette, craps,
blackjack, caribbean poker, paigow, video poker games, slots, multi-line
slots and more.
Also it includes full marketing and management tools for your successful
casino business.
Check our website.
http://www.eplaysoft.com
http://www.megabetcasino.com (demo site)
The winning rate in fun mode play is different from that of real money
mode.
In real money mode, you can control the winning rate of each game.
Temporary user account for testing realmode play can be provided upon
request.
The price of the full casino sourcecodes including software, flash,
database and documents is JUST $9,900
Don't think that our software value is just $ 9,900. It's way beyond even
$99,000.
Check our software at the above site.
We are selling just 3 copies for this price on a first-come-first-served
basis to invest in developing different software(not gaming one).
We are selling full sourcecodes including everything(software, flash,
database and documents).
If you want, we can use escrow.com to make the deal safe and ensured to
you. Using escrow.com, you can release money to us after you receive the
source codes and check/verify if your casino works as megabetcasino.com.
We can install casino on your own server for you.
Contact us if you are interested.
We are the developers of the casino software, not sales broker or
reseller.
David.
email***@***.com
Eplaysoft, the gaming software development company.
http://www.eplaysoft.com
- 11
- Java Newbie questionHi all, I'm learning Java 2 by myself and find question for help.
I'm testing the System.in.read() method and tried the following program:
import java.io.*;
class ReadBytes {
public static void main(String args[])
throws IOException {
byte data[] = new byte[10];
System.out.println("Enter some characters.");
System.in.read(data);
System.out.print("You entered: ");
for (int i=0; i<data.length; i++) {
System.out.print((char)data[i]);
}
}
}
My question are:
(1) if I just comment out the "throws IOException" in the main, I
just got compilation error! Is the any condition I can tell whether
I have to throw something or not? I remembered in the HelloWOrld
app, I don't have to throw anything.
(2) If I entered more than 10 characters in the above test, I didn't
get overflow error. Why? Actually I'm expected an exception to
be caught.
Thanks in advance.
- 14
- Directory Aliases in ResinI recently had a project dropped into my lap that is written in JSP
running on Apache/Resin. A previous version of the application is
already running and configured on the production server, but new
functionality forces us to reconfigure some portions of both Apache
and Resin. There are basically two versions of the app that live in
separate directories, one that is served when someone goes to
www.domain.com, the second when someone goes to www.domain.com/subdir.
The main issue here is that there will be more than one "subdir", all
of which need to point to the same directory on the server, rather
than duplicating all the code for each new "subdir" that gets added.
Setting up aliases in Apache isn't a big deal, those are done. What
I'd really like to know is if it is even possible to set up aliases in
Resin similar to how they are done in Apache. I did some digging
through documentation, but was unable to find something. If anyone
can point me in the right direction, I'd appreciate it.
- 15
- Applet downloading from netI have a beginner's question.
If I go to internet, a web page containing a java applet. The applet
class
should be downloaded to my hardware.
Does anybody can tell me where I can find the downloaded applet class
file
and image file related to the applet class?
Thanks in advance,
P.Kaviarasu
email***@***.com
- 15
|
| Author |
Message |
Thomas.Hermann
|
 Posted: 2004-8-31 10:08:00 |
Top |
java-programmer, Math.pow(a,b) Bug
--=-bch+Wpkq/6UBCHGw87bz
Content-Type: text/plain
Content-Transfer-Encoding: 7bit
java.lang.Math.pow(a,b) incorrectly returns a positive value when a
negative value is raise to an odd integer. This occurs with the
jdk-1.4.2p6_4, which applies patchset 6. The attached file will
demonstrate the error.
The problem appears to be corrected by rebuilding the JVM with the
following correction:
--- e_pow.c.orig Mon Aug 30 21:01:45 2004
+++ e_pow.c Mon Aug 30 21:01:01 2004
@@ -173,7 +173,7 @@
}
/* (x<0)**(non-int) is NaN */
- if(((((u_int32_t)hx>>31)+1)|yisint)==0) return (x-x)/(x-x);
+ if(((((int32_t)hx>>31)+1)|yisint)==0) return (x-x)/(x-x);
/* |y| is huge */
if(iy>0x41e00000) { /* if |y| > 2**31 */
Furthermore, examining the experimental patchset, it appears that the
following patch also corrects the error:
2004-07-08 Thursday 20:09 glewis
* j2se/src/share/native/java/lang/fdlibm/src/e_pow.c:
. Merge in a fix recently added to FreeBSD's math library (taken
from
fdlibm-5.3):
"Fixed the sign of the result in some overflow and underflow cases
(ones
where the exponent is an odd integer and the base is negative)."
I've not yet run this through the compatibility test suite, so
this
change may be backed out if the suite relies on the broken
behaviour.
If I had the compatibility test suite, I would be willing to apply the
experimental patchset and perform the test. At the moment, I am not
willing to apply the patchset without being able to test the results.
Please email me with any questions or suggestions.
Best regards,
Tom H.
--
---------------------------------
-- Thomas M. Hermann
-- Thomas.Hermann AT cox DOT net
---------------------------------
--=-bch+Wpkq/6UBCHGw87bz
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
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To unsubscribe, send any mail to "email***@***.com"
--=-bch+Wpkq/6UBCHGw87bz--
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Index ‹ java-programmer |
- Next
- 1
- [java.nio] Blocking mode for a while - How ?I'm using selector to manage connection on server. When server get an
incomming connection register this connection in non-blocking mode for
making readiness selection on it. In some moment i want to operate
with clients channels with blocking mode... but i can't change channel
to blocking mode, because is registered with selector in non-blocking
mode - i get IllegalBlockingModeException. How can i operate for a
while in blocking mode, but not to lose possibility readiness
selection on channel?
--
pozdr.;)
~xEM
- 2
- Confused with PrintWriter, OutputStream and OutputStreamWriter.Hello
Rather confused with PrintWriter, OutputStream and OutputStreamWriter.
Not sure how to pass osw to pw.
PrintWriter pw=getAgentOutput();
RichTextItem body = (RichTextItem) docRT.getFirstItem("RTItem");
OutputStreamWriter osw = new OutputStreamWriter( new
RichTextOutputStream(body, true, true) );
Want print the contents of osw rich is a RichText to pw so as to do
println.
Or is there a better way to parse the richtext?
Many thanks
- 3
- Check out my Java appletI have developed a Java applet that lets you run and manage a website
online.
I would like to see how well it runs on your browser. You can edit the page
right in there, but cannot save without access to my server.
A website does not need the server to support any scripting technology or a
database to host this. Everything is done inside the browser.
regards,
Linh.
- 4
- ports/Javamail-1.3.2 updateHi!
My name is T.Tamura (DAIGU)
I found javamail's update.
So, It's easy to change Ports/java/javamail.
Please use, if very well.
============= BEGIN ==================================
diff javamail/Makefile javamail132/Makefile
9c9
< PORTVERSION= 1.3.1
---
> PORTVERSION= 1.3.2
13c13
< DISTNAME= ${PORTNAME}-${PORTVERSION:S/./_/g}-upd
---
> DISTNAME= ${PORTNAME}-${PORTVERSION:S/./_/g}
26c26
< DOWNLOAD_URL= http://javashoplm.sun.com/ECom/docs/Welcome.jsp?StoreId=22&PartDetailId=7515-java_mail-1.3.1-oth-JPR&SiteId=JSC&TransactionId=noreg
---
> DOWNLOAD_URL= http://javashoplm.sun.com/ECom/docs/Welcome.jsp?StoreId=22&PartDetailId=7515-java_mail-1.3.2-oth-JPR&SiteId=JSC&TransactionId=noreg
diff javamail/distinfo javamail132/distinfo
1,2c1,3
< MD5 (javamail-1_3_1-upd.zip) = a83fa4102e7a1441d7c1046015675f46
< SIZE (javamail-1_3_1-upd.zip) = 2270699
---
> MD5 (javamail-1_3_2.zip) = e65b92fde398f472cbe4cb12c69303fe
> SIZE (javamail-1_3_2.zip) = 2348764
>
Only in javamail132: work
============== END ===================================
- 5
- Jars and getResource()Hi there,
I've been trying to find a solution to this with no luck so far.
Consider a project with the following dir structure
/bin
/resources
/resources/velocity
.
.
etc.
In /resources/velocity there is a file "velocity.properties"
with /resources/velocity in the classpath I can simply say from within a
class
Class.class.getResourceAsStream(/velocity.properties);
and get an InputStream to that file.
However, when packaging it in a jar file, the above statement stops
working even if in the Manifest I specify in the header:
Class-Path: resources/velocity/
Any ideas? :(
TIA
- 6
- FileOutputStream to Different DirectoryHello,
I'm trying to get Java to create a file in a new directory (which
already exists). Using FileOutputStream, I've been able to create a
new file, but it always puts it into the same directory (as far as I
can tell, there is only one argument for file name... nothing for
path). Is there some way to specify another path?
Thanks,
Ben
- 7
- SpinnerNumberModel question (maybe JSpinner..)Hi!
I have an application with quite a few jspinners with the default
spinnernumbermodel (i.e created with JSpinner myspinner=new
JSpinner(new SpinnerNumberModel(val,min,max,step));)
Anyway, say I put the allowed range to be 0-10.
Can I notify the user that they typed in an invalid value then?
that is the user types in 100, the spinner will reject this when the
user select the next spinner, but I would like to inform the user that
they tried to enter an illegal value. Can this be done in an efficent
way?
regards
Daniel
- 8
- Substitute for Tiles in JSF?Hello
I am working on a refactor. The project handles some trather stright
forward business, but the previous authors decided to use a best of
breed or so they thought amalgam of frameworks. They used Spring,
Struts Tiles Hibernate and JSF. The trouble is new people coming to
the project need to spend weeks coming up to speed on all the open
source technologies. So I am endeavoring to reduce the number of
frameworks I want to keep JSF as I see this as the future of Web
development. Hibernate I believe we may keep.
Spring is easy to get rid of just use the JSF controller. But tiles!
should we use a frameset or use JSP includes? Or does someone know of
a Set of JSF controls that can replace Tiles? Facelets seems a bit of
overkill.
Suggestions any one?
Bob
- 9
- java.security.PrivilegedActionExceptionI am accessing a JAXM based Web Service, deployed in Tomcat under
JWSDP.
However I am getting an exception like this:
java.io.IOException: java.security.PrivilegedActionException:
com.sun.xml.messaging.saaj.SOAPExceptionImpl:
Any Suggestions Please...
- 10
- JSP EL and explicit error messagesHi,
I sometimes mistype object and property names in JSP EL expressions,
and find that no error is generated. It just doesn't evaluate the
expression.
For example, for an object named foo with a property of name, this
would throw an error:
<%= foo.getNAme() %>
where this won't:
${foo.nAme}
Is there any way to make it produce explicit errors in a case like this?
- 11
- Finding out which thread has interrupted Thread th = Thread.currentThread();
try {
th.sleep(10000);
} catch (InterruptedException e) {
/* I want to know *which* thread interrupted this one. */
}
How can I achieve this?
Tnx.
Manish
--
http://mannu.livejournal.com/
- 12
- A Beginner:Why is my program always returning true?Hi I'm learning Java and there seems to be something wrong with my
program. It's supposed to identify if the substring is in the main
string. My program always returns true and I'm a bit confused.
BTW, this is based from the tutorial from sun. I've read the whole
fundamentals section and try to re-write the examples there after a
while.
Anyway here's the code:
class findInString {
public static void main(String[] args){
String mainString = "The quick brown fox jumped over the lazy dog.";
String subString = "hey";
boolean isItThere = false;
int max = mainString.length();
Test:
for (int letter = 0; letter < max; letter++){
int subStringSize = subString.length();
int subStringCounter = 0;
int mainStringCounter = letter;
while (subStringSize-- > 0){
if (mainString.charAt(mainStringCounter) !=
subString.charAt(subStringCounter)){
continue Test;
}
}
isItThere = true;
break Test;
}
System.out.println(isItThere ? "Word found" : "Not found.");
}
}
If you guys see anything that I should improve on (my programming)
please feel free to comment. I'd appreciate them. Thanks!
- 13
- Using Java CORBA under OS2Hi,
OS/2 (y'all remember that, right? It's now out in a spiffy new independent
version http://www.ecomstation.com) uses DSOM, which is a relative of CORBA
to define objects at the OS-level. I am wondering if there are any tools to
take classes defined in CORBA then implemented in Java and use them under
OS/2. It could work really nicely. I found an old SOM to Java compiler from
IBM, but that seems to be unsupported now.
Just wondering if anyone has experience with this.
-- jjg
There are no z's in my address.
- 14
- 15
- Set colum width in a JTablePosted this on comp.lang.java.programmer before seeing this group - sorry.
Hi,
I'm trying to set the column width in a JTable.
This only works on the first column.
As soon as I use setMinWidth() or setMaxWidth() on the second or third
column setPreferredWidth() wont't work at all.
I use this funtion:
public void insertHead(String headName, int width)
{
TableColumn column = new TableColumn();
column.setHeaderValue(headName);
columnModel.addColumn(column);
column.setMinWidth(15);
column.setMaxWidth(200);
column.setPreferredWidth(width);
}
The JTable is set to AUTO_RESIZE_SUBSEQUENT_COLUMNS.
Any hints?
Thanks.
Rene
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