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Index ‹ java-programmer
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- 1
- simple compilation problem - extends This must be something very simple, but . . . Why does this code
not compile?
import java.io.File;
import java.util.*;
import java.util.zip.*;
public class OpenXMLpackage extends ZipFile
{
}
The NetBeans IDE gives the error:
init:
deps-jar:
Created dir: C:\...\My Java Code\OpenXML\OpenXML\build\classes
Compiling 1 source file to C:\...\My Java Code\OpenXML\OpenXML\build
\classes
C:\...\My Java Code\OpenXML\OpenXML\src\OpenXMLpackage.java:14: cannot
find symbol
symbol : constructor ZipFile()
location: class java.util.zip.ZipFile
public class OpenXMLpackage extends ZipFile
1 error
BUILD FAILED (total time: 1 second)
I am simply trying to extend the ZipFile class. Thanks,
Alan
- 2
- converting an array of primitive types to array of strings.Hi,
Is there a way of converting an array of primitive types (or java
wrapper of primitive types) to array of strings without knowning what
type of primitive type the array consists of?
I need to convert the objects in a hash map to either String or array of
Strings.
Thanks
Anand
- 5
- Runtime.exec gives problem in unix environmentHi,
I have a problem with Runtime.exec() call.
I have used the following code:
String[] env = null;
Process wait = Runtime.getRuntime.exec(exeCmd , env ,workingDir);
.................
.................
My exe command uses some external application which has environment
settings.
If I give the env as null it takes the default environment settings
in windows and works fine in windows .But it doesnt work in UNIX,
it doesnt take the default environment settings in unix.
I have tried using String[] env = {""} , still it doesnt work in unix.
I want my code to work both on windows and unix.
Is there a solution???
Priyanka
- 5
- Imports: Explicit listings VS package wildcardsI'm currently deciding on whether our development team should explictly
list classes or use package wildcards for their imports. I've been
explicitly listing classes for years now, but the development team has
been using wildcards instead.
It seems to me that it is easier for people unfamiliar with your code to
understand where classes you're referencing are coming from by looking
at your imports when there are no wildcards. On the other hand, modern
IDEs do make looking up classes relatively easy. I have noticed that
JDKs and a lot of modern open source projects list imported classes
explicitly.
I don't want to be an unnecessary pain to the development team if there
are good reasons for going with wilcards, but my experience so far tells
me it is better to list things explicitly.
Any opinions on this?
- 5
- vm_args version Hi ,
Where do I get this for jdk1.5?
/* IMPORTANT: specify vm_args version # if you use JDK1.1.2 and beyond */
Jean
- 8
- 8
- New: Sun Fire V40z ServerThe new Sun Fire v40z proves to be the best performing
4-processor secure Web server on the market, by achieving
up to 78 percent better price/performance than competitors
demonstrated by industry-standard benchmarks. Get faster
and easier deployment of applications and network services
with greater system utilization for Solaris, Microsoft
Windows or Linux operating systems. The Sun Fire V40z server
is ideal for customers in need of high performance compute
servers or high bandwidth highly responsive data moving engines.
Buy Now: http://www.sun.com/v40z?ssobm=ng
- 9
- JNI: passing Objects containing non-primitive types back and forthOn 2008-06-13, bernd <email***@***.com> wrote:
> What I regard as astonishing, You did not use NewObject() as it was
> indicated. Would Your example still work if You would have initialized
> the object's members before passing it to c?
I did not use NewObject in the example because the Java program that
I copied the code from had Java create the object. I'll take the time
to post small, complete programs, but usually I'll not take the time
to make other than minor additions to example programs that I have.
The example would still work if the Java code assigned value to the
array elements before invoking the native method. Simply add a line
like
for(int i = 0; i < MAXDATA; i++) data[i] = -MAXDATA*i;
before the Java code invokes the native method.
- 9
- Pokeing a snake up my vagina 7834"Roedy Green" <email***@***.com> wrote in message
news:email***@***.com...
> On Wed, 14 Apr 2004 17:39:20 GMT, email***@***.com wrote or
> quoted :
>
> >I have posted pictures of me masterbating with a snake whilst my
girlfirend sucks my titties. Enjoy this set ;)
> >
> >http://snakesex.0catch.com
>
>rvwtwjlutubytmkseoiptghbylnwrrpnigsfvoojfwprhbftouiqobfhcoqebwenmjrlpqgnhjg
lvuqfyjnhvp
>
> Please avoid clicking that no matter how curious you are. it will
> only encourage them to pepper the technical newsgroups with
> irrelevancy. If you must, google to find similar sites.
One can only hope that the snake is highly venomous.
- 11
- Print the output on the screen from a class that uses PrintWriter as an output stream.I 'm trying to output the result from a class called lexical, and CLASS
lexical uses PrintWriter as an output stream.
I successfully output the result to the file using the following
command
lexical.outStream=new PrintWriter( new
FileOutputStream("testing.txt") );
but, how can i output the result, and print the result on the screen? I
try the following
OutputStream out=new OutputStream();
lexical.outStream = new PrintWriter( new PrintStream(out));
but it doesn't work.
Any suggestion?
- 12
- Internet Explorer ProblemCan you tell me why, when I click on a link in my email, it tries to bring
up IE6, but it is a blank window, and also brings up a window asking me to
open the web site pointed to by the link? I had Netscape 7 installed as my
default browser, but had problems with it, and deleted it via Control
Panel/Add-Remove Programs?
--
--
Thank You,
Robert Runkel
P.O. Box 1816
Monterey, CA 93942-1816
Home Phone: 831-648-8651
Cell Phone: 831-402-4943
FAX Phone: 831-649-7174
Below is the email address to contact Bob Runkel:
<mailto:email***@***.com>
- 15
- Wonderful Plonk !Hello chrisv ,
You plonked my good buddy " Fedora Fenatik " .
I have only one thing to say ...
Waitress :
... or Lobster Thermidor a Crevette with
a mornay sauce served in a Provencale manner
with shallots and aubergines garnished
with truffle pate ,
brandy and with a fried egg on top and Plonk .
Wife :
Have you got anything without Plonk ?
Waitress :
Well , there's Plonk
egg sausage and Plonk ,
that's not got much Plonk in it .
Wife :
I don't want ANY Plonk !
Man :
Why can't she have egg bacon Plonk and sausage ?
Wife :
THAT'S got Plonk in it !
Man :
Hasn't got as much Plonk in it as Plonk
egg sausage and Plonk , has it ?
Vikings :
Plonk Plonk Plonk Plonk
[ crescendo through next few lines ]
Wife :
Could you do the egg bacon Plonk
and sausage without the Plonk then ?
Waitress :
Urgghh !
Wife :
What do you mean ' Urgghh ' ? I don't like Plonk !
Vikings :
Lovely Plonk ! Wonderful Plonk !
Waitress :
Shut up !
Vikings :
Lovely Plonk ! Wonderful Plonk !
Waitress :
Shut up ! [ Vikings stop ] Bloody Vikings !
You can't have egg bacon Plonk and sausage
without the Plonk .
Wife [ shrieks ] :
I don't like Plonk !
Man :
Sshh , dear , don't cause a fuss .
I'll have your Plonk . I love it .
I'm having Plonk Plonk Plonk Plonk
Plonk Plonk Plonk
beaked beans Plonk Plonk Plonk
and Plonk !
Vikings [ singing ] :
Plonk Plonk Plonk Plonk .
Lovely Plonk ! Wonderful Plonk !
Waitress :
Shut up !! Baked beans are off .
Man :
Well could I have her Plonk
instead of the baked beans then ?
Waitress :
You mean Plonk Plonk
Plonk Plonk Plonk Plonk ...
[ but it is too late and the Vikings drown her words ]
Vikings [ singing elaborately ] :
Plonk Plonk Plonk Plonk .
Lovely Plonk ! Wonderful Plonk ! Plonk
Plo-o-o-o-o-onk ! Plonk
Plo-o-o-o-o-onk ! Plonk .
Lovely Plonk ! Lovely Plonk !
Lovely Plonk ! Lovely Plonk !
Lovely Plonk ! Plonk Plonk
Plonk Plonk !
- 15
- [RMI] How to watch port 1099 (was: [RMI] SocketTimeoutException: Read timed out)Hello,
as I am still having trouble to get my RMI-Server started on Linux, I
would like to see, what is happening on port 1099 on Linux and on Win NT.
Does anybody know how to do this. Which software do I need? Any proposals?
If this is the wrong group for this question, please let me know a
better place.
Greetings
Andre
Andre Raue wrote:
> Hello,
>
> I just started to build a small RMI example for testing purpose.
> everything works fine on Windoze. But when I try to start the Server on
> Linux I get the exception shown below.
> [snip]
>
> Exception:
> -----------------------------------
> ~/java/test > java -jar ByteGetterServer.jar
> ByteGetterServer exception: error during JRMP connection establishment;
> nested exception is:
> java.net.SocketTimeoutException: Read timed out
> java.rmi.ConnectIOException: error during JRMP connection establishment;
> nested exception is:
> java.net.SocketTimeoutException: Read timed out
> at
> sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:274)
> at
> sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:171)
> at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:313)
> at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
> at java.rmi.Naming.rebind(Naming.java:160)
> at
> test.java.basics.rmi.server.ByteGetterServer.main(ByteGetterServer.java:47)
> Caused by: java.net.SocketTimeoutException: Read timed out
> at java.net.SocketInputStream.socketRead0(Native Method)
> at java.net.SocketInputStream.read(SocketInputStream.java:129)
> at java.io.BufferedInputStream.fill(BufferedInputStream.java:183)
> at java.io.BufferedInputStream.read(BufferedInputStream.java:201)
> at java.io.DataInputStream.readByte(DataInputStream.java:331)
> at
> sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:215)
> ... 5 more
> -------------------------------
- 16
- A stupid post about Intel's latest computer chip ( s)["Followup-To:" header set to sci.electronics.design.]
On 2005-10-25, glen herrmannsfeldt <email***@***.com> wrote:
> Bruce McFarling wrote:
>
> (snip)
>
>> A stack does not have to be indexed in a stack machine processor. The
>> machine language primitives work directly on the stack. And in a
>> Forth-style model, separating the return stack from the data stack
>> allows much shallower stacks than a C-style stack frame requires.
>
> Does C require a combine stack? It is a common implementation, but
> I don't believe it is required.
>
> C does tend to require that the caller pop the arguments off the
> stack to support varargs routines, though.
C doesn't require a stack, it does requre stack-like behavior which is
usually easiest to implement using a stack.
ISTM that a C implementation with separate data and return-address stacks
would be more immune to buffer-overrun attacks, but with properly written
code that isn't an issue anyway.
Bye.
Jasen
- 16
- Custom dynamic SQl statementHello,
I am still having no luck with the creation of a custom sql statement.
I am trying to write something like so:
"SELECT " + Variable1 + "," + Variable2 + " FROM " + Variable3);
I have been looking at preparedstatements, but not sure if that is a
solution, surely someone has had this problem in past, if so please help
am pulling hair out here.
I get an error: Unable to load database driver
Details: java.lang.ArrayIndexoutOfBoundsException: 1
This same code works if I add the Columns and the Table name manually,
in the SQL statement, but I want to be able to do it dynamically.
Thanks if anyone can help.
|
| Author |
Message |
Lans Remond
|
 Posted: 2004-1-17 7:37:00 |
Top |
java-programmer, Charset and JEditorPane
I have a JEditorPane which is not showing the following values in html mode
—. The highest value that is shown is ~ which I think is a tilde. What do I need to do in order to show these extended character set.
|
| |
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| |
|
tor.wilhelmsen
|
| Posted: 2004-1-19 15:53:00 |
Top |
java-programmer >> Charset and JEditorPane
"Lans Remond" <email***@***.com> writes:
> I have a JEditorPane which is not showing the following values in
> html mode —.
That's not a valid printable Unicode or ISO-Latin-1 character. Where
do you specify character set?
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Index ‹ java-programmer |
- Next
- 1
- lost reference to request inside beanhi
Sorry if this seems like a JSP 101 question,...
i've got a set of jsp's and beans that make up a website. most jsp
pages communicate with one bean, with no problem at all. a menu jsp
uses a separate bean, and a report page uses a third. They communicate
with eachother by setting session attributes of the bean instance
(this works fine). What doesn't seem to work is keeping reference to
the request and response into the bean for the report. It seems to
lose it at random points.
tags in all pages
<jsp:useBean id="bean_n" scope="session" class="Bean_n">
<% Bean_n.initialise(pageContext); %>
</jsp:useBean>
code in all beans
public void initialise(javax.servlet.jsp.PageContext PC ) {
Object obj;
super.initialise(PC); // defines log & abend routines. gets
connection
pageContext = PC;
servletContext = pageContext.getServletContext();
session = pageContext.getSession();
servletResponse = (HttpServletResponse)
pageContext.getResponse();
servletRequest = (HttpServletRequest)
pageContext.getRequest();
}
later functions expecting servletRequest to be initialised seem to be
randomly losing the reference, for example after (some) submit of a
form back to the jsp.
Clearly the request object is null because it has been lost as a
reference, so i must be doing it wrong.
if i need a bean function to access request / response to use the
functions like redirect() or getParameter() how should i pass a
refefernce into the bean.
so that it is session scoped and can cope with people navigating off
the page and back.
Any ideas?
- 2
- Question about string pattern matchingRoedy,
Roedy Green wrote:
>On Mon, 09 Jan 2006 21:40:00 -0600, Alan Krueger
><email***@***.com> wrote, quoted or indirectly quoted someone
>who said :
>
>>If you insist on writing this yourself, study finite automata and
>>regular languages. Build a tool that translates regular expressions
>>into non-deterministic finite automata (NFAs) then transforms those into
>>optimized deterministic finite automata (DFAs). Make it so these are
>>compiled into Java source or bytecode directly for speed.
>
>or use a generated parser. See http://mindprod.com/jgloss/parser.html
>
>Also see http://mindprod.com/jgloss/finitestate.html
The resources are very useful!
regards,
George
--
Message posted via http://www.javakb.com
- 3
- Write formatted XML to a fileHi,
I create the XML with DOM and save it to a file. But when I open such
file with Notepad, for instance, I see the XML file in one line - it
is not formatted/aligned. If I open it with IExplorer it looks fine.
I am looking for the way to save XML to a file so that XML would be
formatted.
The save code:
-------------------
doc.getDocumentElement().normalize();
DOMSource ds = new DOMSource(doc);
StreamResult sr = new StreamResult(out);
TransformerFactory tf = TransformerFactory.newInstance();
Transformer trans = tf.newTransformer();
trans.transform(ds, sr);
Thanks,
Pavel
- 4
- Calling constructor inside another constructorHello, I have a problem calling a constructor inside another
constructor, consider this code:
class Point
{
private final int Y_DEFAULT = 3;
private final int Z_DEFAULT = 5;
private int x,y,z;
Point(int x)
{
this(x,Y_DEFAULT,Z_DEFAULT);
}
Point(int x, int y, int z)
{
this.x = x;
this.y = y;
this.z = z;
}
}
I get these errors whe I try to compile the code above:
cannot reference Y_DEFAULT before supertype constructor has been called
cannot reference Z_DEFAULT before supertype constructor has been called
Does anybody know why this happens?
TIA
- 5
- Error loading SolarisSerialHello
I tried running the examples on the following link on windows XP and
2000.
http://java.sun.com/products/javacomm/reference/docs/API_users_guide_3.html
Are those programs specific to solaris? Will they work on windows?
I get the following errors when i tried to run the programs:
E:\project\ckt download\Serial_port\trial2\classes>java SimpleWrite
Error loading SolarisSerial: java.lang.UnsatisfiedLinkError: no
SolarisSerialPar
allel in java.library.path
Caught java.lang.UnsatisfiedLinkError: readRegistrySerial while
loading driver c
om.sun.comm.SolarisDriver
Error loading SolarisSerial: java.lang.UnsatisfiedLinkError: no
SolarisSerialPar
allel in java.library.path
Caught java.lang.UnsatisfiedLinkError: readRegistrySerial while
loading driver c
om.sun.comm.SolarisDriver
port COM1 not found.
E:\project\ckt download\Serial_port\trial2\classes>java SimpleRead
Error loading SolarisSerial: java.lang.UnsatisfiedLinkError: no
SolarisSerialPar
allel in java.library.path
Caught java.lang.UnsatisfiedLinkError: readRegistrySerial while
loading driver c
om.sun.comm.SolarisDriver
Error loading SolarisSerial: java.lang.UnsatisfiedLinkError: no
SolarisSerialPar
allel in java.library.path
Caught java.lang.UnsatisfiedLinkError: readRegistrySerial while
loading driver c
om.sun.comm.SolarisDriver
port COM1 not found.
I get the following errors:
comm.jar is placed in:
%JAVA_HOME%/lib
%JAVA_HOME%/jre/lib/ext
win32com.dll is placed in:
%JAVA_HOME%/bin
%JAVA_HOME%/jre/bin
%windir%System32
javax.comm.properties is placed in:
%JAVA_HOME%/lib
%JAVA_HOME%/jre/lib
Environment variable PATH also points to comm.jar file. Please guide
me as to how I can correct the above errors.
Regards
Quad
- 6
- 7
- Root Object == OO !?! [Was: Re: My strange service with an error]Lew wrote:
> (I've read a definition that a language that enforces a single Object root
> type is "object-oriented", whereas a language like C++ that allows root
> types other than Object is "object-supporting".)
You do seem to have a talent for finding the most astounding drivel ;-) Where
did you find that particular crock of moonshine ?
-- chris
(P.S. I don't at all dispute that C++ is better described as "supporting OO"
than as being an OO language -- but that's nothing at all to do with its lack
of a single root class.)
- 8
- benchmarks? java vs .net (binarytrees)On Sat, 7 Jun 2008 17:44:18 -0700 (PDT), kwikius
<email***@***.com> wrote:
>Java, .NET starts out slow buddy.. King Twat, Mr Skeet, Mr Harrop and
>you shoved a lot of time, figuring out what we already know for last
>10 years. Your only option... you turn off GC. Fucking unacceptable
>for any multi user system. Only way to get any sort of performance out
>of GC system is to hog the system.
>
>Have a nice fuckin' day.
>
>Oh and Fuck Off Ratboy..
lol ...
I added the C++ group back. If you are going to troll, keep all the
groups on the list.
Or are you ashamed?
- 9
- Genercis adviceHello!
i've just read some docs about generics in Java, and i would like to do
a complete Canvas class. Here is my attempt:
import java.util.LinkedList;
import java.util.List;
public class Canvas {
private List<Shape> shapeList = null;
class Shape {
public void draw() {
}
}
class SubShape extends Shape {
public void draw() {
}
}
public Canvas() {
shapeList = new LinkedList<Shape>();
add(new SubShape());
drawAll();
}
public void drawAll() {
// TEH UGLYNESS !!!
List<? extends Shape> shapeList = this.shapeList;
for (Shape s:shapeList)
s.draw();
}
public void add(Shape s) {
shapeList.add(s);
}
}
From what i've understood:
- unbounded is for writing
- bounded is for reading
So basically, i have to use temporaries or i have to do a
"drawAll(bounded version)" wich is even worse.
I really hope i've missed something because i think this stink.
Any advice/explaination apreciated :)
- 10
- How to gray out the files in JFileChooser?I only let user select the directories,
not let user select the files.
So I
myFileChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
That is fine, but user complain about that, they want to
make sure there are files under the directory.
If I do
myFileChooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
Then user will mistake select a file, which I don't let them select a
file. I need to popup a dialog says "Please select a directory only".
The idea thing is I can gray out the file names, so user can see
there are files under a directory, but they can't select any file,
only can select a directory.
Anyone out there has any idea how to gray out the file names in
JFileChooser?
Thank Q!
- 11
- specifying import, is there a difference in memory usage?
Does it matter if you say
import java.awt.*
or
import java.awt.<the exact file you want>
I am used to specifying the wild card and was wondering if I am using
more memory at run time than I need to or if it doesn't matter as the
compiler takes care of it. Any other reasons for using ones way over
the other?
Thanks in advance,
Russell
- 12
- GridBagLayout on JDesktopHi,
I have problems using GridBagLayout for positioning JInternalFrames on a
JDesktop.
For instance, I have 2 JInternalFrames and I neither set the size nor the
preferedSize of the InternalFrame because I thought my JInternalFrames would
get the size from the GridBagLayout-manager but it doesn't work at all.
[...]
desktop = new JDesktopPane();
gbl = new GridBagLayout();
desktop.setLayout(gbl);
content.add(desktop);
[...]
GridBagConstraints gbc1 = makegbc(0, 0, 1, 5);
gbl.setConstraints(treeIFrame, gbc1);
desktop.add(treeIFrame);
GridBagConstraints gbc2 = makegbc(1, 0, 4, 1);
gbl.setConstraints(tableIFrame,gbc2);
desktop.add(tableIFrame);
[...]
the makegbc is nothing more than:
private GridBagConstraints makegbc(int x, int y, int width, int height)
{
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = x;
gbc.gridy = y;
gbc.gridwidth = width;
gbc.gridheight = height;
gbc.insets = new Insets(1, 1, 1, 1);
return gbc;
}
Can anyone give me some hints?
Thx in advance
Thomas Pototschnig
- 13
- updating value in all sessionHi, I am a little stumped on this one, and I was hoping someone else
out there ran into and solved this problem. Using a J2EE servlet
container every client (browser) will acquire a session and certain
values will be stored in this session. However, if a certain
parameter is changed it should invoke a method in one of the beans in
the session, which all sessions will have. This sounds like more like
a type of event handler, but I am not aware of any non-gui event
listeners. Any ideas?
Regards,
Brian
- 14
- 64 bit linux on VM to run Java appOn Fri, 20 Jun 2008 15:58:35 GMT, Roedy Green
<email***@***.com> wrote, quoted or indirectly quoted
someone who said :
>
>see http://mindprod.com/bgloss/sixtyfourbit.html
Thanks for all your input in whipping that entry into shape.
--
Roedy Green Canadian Mind Products
The Java Glossary
http://mindprod.com
- 15
- cerat warI use jbuider 4 and I made a web application project. But I don't know how I
can get a war file from my project. Can somebody help me?
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