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Index ‹ java-programmer
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- 2
- Measuring string bounds in headless serverI have a problem with calculating screen string width for the browser
client.
I'm outputting a stream of content type application/vnd.ms-excel and
sending back an XML spreadsheet. (No complaints about using Mc$oft
products, it's what's needed!)
Excel does not autosize columns which contain string data, so the text
columns are the standard Excel width, and the text is wrapped onto about
7 lines. See
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnexcl2k2/html/odc_xmlss.asp
for details of the XML format.
Excel does allow you to specify the with of a column in points, so I was
using the awt Font classes to calculate the string bounds in pixels. I
explicitly set the resolution to be used to 72dpi by creating a
FontRenderContext with an AffineTransform with a scaling factor of (1.0,
1.0), so that asking the pixel width, gets the point width.
This worked fine testing it on my windoze machine, but on the Unix
server, it's obviously running in headless mode, and anyway, it doesn't
have the Arial font which I'm specifying in my spreadsheet as the font
to use.
Is there any way of calculating the width of a string in points knowing
its font and the point size of the font? You shouldn't need a graphcs
environment, just the font information. I have all the .TTF files, I
could copy them to the Unix machine if Java could use them and do the
calculation.
I hate leaving the user interface looking so shoddy with wrong sized
columns!
It SHOULD have worked in a headless environment according to
http://java.sun.com/j2se/1.4.2/docs/guide/awt/AWTChanges.html#headless
and we are on version 1.4.2_01. It actually blew up in awt code:
java.lang.NoClassDefFoundError
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at
java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:62)
at java.awt.Font.initializeFont(Font.java:308)
at java.awt.Font.<init>(Font.java:344)
That's when I'm trying to instantiate a
new Font("Arial", Font.PLAIN, 10);
Any ideas anyone?
- 5
- Can I create a Thread directlyHI,
Can I create a thread directly and then start it and run it as the code below?
Thread tt = new Thread(); (or Thread tt = new Thread("thread");)
tt.start();
tt.run();
If this is not possible, what is the use of these two methods?
- 8
- Wrong default encoding on Linux - solvedMac <email***@***.com> wrote:
> On Tue, 30 Sep 2003 14:22:46 +0000, Bernd Eggink wrote:
>> I installed j2sdk1.4.2_01 on several Linux systems running SuSE 8.2.
>> Normally the default file encoding is correctly set to "ISO-8859-1".
>> On one system, however, the installation script assigns the value
>> "ANSI_X3.4-1968" to this property, which causes nasty problems with
>> german umlauts. I can't see any essential differences between this
>> system and the others, although I guess there must be some. Any ideas
>> what that could be?
> This may be more of a linux question than a java question. Maybe that one
> machine has different locale settings or something, and the jdk picks up on
> that either during the installation or at run time.
I found it at last. A library was missing (package 'glibc-locale').
Everything is OK now.
Bernd
--
Bernd Eggink
Regionales Rechenzentrum der Uni Hamburg
email***@***.com
http://www.rrz.uni-hamburg.de/RRZ/B.Eggink/
- 8
- JDK1.3.1 AbstractMethodErrorHi Frederick,
> I am trying to use my FreeBSD file server as a build machine as well. So
> I loaded on the JDK1.3.1-p8, JBoss 3.0.2, AntHill-1.6.3.67, Ant 1.5.3-1,
> XDoclet 1.2b3, Hibernate 2.0, etc on my FreeBSD 4.8 stable box. It is a
You did not install these via ports, did you? I can't find a port for
AntHill, but it does look very interesting!
Ernst
_______________________________________________
email***@***.com mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-java
To unsubscribe, send any mail to "email***@***.com"
- 9
- getting clipboard content as rawdataI am within a java application (swing), and
I would like to get the content of user clipboard as rawdata (binary
byte array) without trying to figure out what flavor it is. I just
need to get the bytes and post them to a server.
(It can part of word doc or xls - server will try to convert that into
an image)
Does that question makes any sens (since I haven't seen a way to do
that within java.awt.datatransfer api) ?
thanks
- 9
- 9
- DDOS Attacks Coming From www.schestowitz.comEver since I visited www.schestowitz.com I have been getting nmaped,
probed, pinged and now DDOS's with floods of requests from an ip
address that resolves to a block assigned to www.schestowitz.com.
I have reported this to my ISP who is now blocking the range from my
trunk.
They in turn have filed a complaint with Catalyst (?) who hosts the
site.
Is anyone else experiencing this kind of a problem or am I the chosen
one?
- 9
- 10
- Focus problem on JListHello,
I made a JDialog with two JButton and one JList. I'd like to get the focus
on my Jlist, but it's always the first button (in declaration order) which
has the focus. An actionListener is added to the JButton and I put the focus
on the Jlist by "JList.requestFocus()".
Any idea ?
- 10
- What are Good Java books?Hi there,
I'd like to buy one or two Java 2 SE books as
text and reference. I need books with good
examples, exercises, projects and solution.
Yes, I know that there are a lot of good
books in the market, but I don't have time to
compare them.
I already have experience in C and C++
programming and a little bit of Java.
Please reply to the group. Thanks a lot.
Jim
- 13
- Cig2u Affiliate Program !cig2u.com - Affiliate Program
Cig2u Affiliate Program! Not only does the site look fantastic, but
they offer competitive prices, and as a cigarette affiliate you will
earn 5% on all sales you make. If you find other people to become
cigarettes affiliates, you will also earn 2% of the total sale value
for all sales they make if they sign up through your affiliate link
Cig2u offer both free and express shipping, with the price of express
shipping being extremely competitive within the industry. Login 24
hours a day to check your sales, traffic, account balance and see how
your banners are performing. You can even test conversion performance
by creating your own custom links! Our program is free to join, it's
easy to sign-up and requires no technical knowledge.
http://affiliates.cigarettes--online.com
- 15
- Tomcat 5.5.7 and Axis 1.0 problemI'm using Tomcat 5.5.7 and deployed Axis 1.0 samples on it. (using JDK
1.5.0_01)
happyaxis.jsp is happy! and finds all required libraries (but not
optionals!)
the list of services is shown correctly (has 2 servies, AdminService
and getVersion)
but when I click on call a local end point the result is:
<?xml version="1.0" encoding="UTF-8" ?>
<soapenv:Envelope
xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<soapenv:Body>
<soapenv:Fault>
<faultcode>soapenv:Server.userException</faultcode>
<faultstring>java.lang.NullPointerException</faultstring>
<detail />
</soapenv:Fault>
</soapenv:Body>
</soapenv:Envelope>
I'm not sure, but I think the problem may be because of the new Compile
mechanism Tomcat 5.5.x uses (depending on JRE not JDK).
How can I recover from this problem?
regards
Amir
- 16
- sun.security.acl questionWhen using the sun.security.adl implementations of acl, aclentry and
permission, is the permission name allowed to have spaces in it? The
examples all use one-word names like "read", "write", etc. I want to
use something like "realtime administrator". Will that work?
d
--
Remove the ns_ from if replying by e-mail (but keep posts in the
newsgroups if possible).
- 16
- references and a binary treeHello,
I am new to Java. I am filling a binary tree with values using a loop,
so when I need to descend one node deeper at the end of the loop, I
use node=node.right for example. Consider this pseudo code:
//...
while(1) {
node=new Node(new Leaf(),null);
node=node.right;
}
I thought that the node variable will contain reference after this
operation. But it does not, because when I look at the root of the
binary tree, it does not get filled any further after the
node=node.right operation.
So my question is, what actually happens in the node=node.right , I
tought that it should be only copying the references, not the values.
I coded the same in c++ and instead of references I used the pointers
and it worked right as I expected.
- 16
- Univernsal IDIt seems to me any sort of ID that can be forged for under $500 is
worse than useless. Any serious bad guy can easily afford fake id.
For everyone else it is just a hassle if they forget their id.
In our past anonymity was not a right. Everyone knew everyone in the
village/tribe. You could not easily do wrong without others knowing
it was you.
If we got serious about a Universal ID, what are its characteristics?
1. costs over $1,000,000 to forge.
2. not useful to anyone other than the true owner.
3. can be scanned in under a second.
4. cannot be scanned without permission from the owner.
5. Should not need to be replaced unless lost. Additional photos
could be digitally added as you age.
6. it should be useful as a credit/debit card, id card, door key,
proof of age, link to medical records. It might even capture most of
the information needed to compute your taxes in a way that the
government has to believe you.
7. It would have to be based on encryption technology and digitally
signing information such as DNA, retinal patterns, fingerprints,
photo.
It might be reasonable to design such a card presuming the card will
have the CPU and memory of a laptop running Java.
--
Roedy Green Canadian Mind Products
The Java Glossary
http://mindprod.com
|
| Author |
Message |
jason
|
 Posted: 2004-7-28 8:53:00 |
Top |
java-programmer, Anyone want a copy of JBuilder X Enterprise ?
Hi
I'm a programmer and have an extra copy of Borland Enterprise Studio
for Mobile v2.5 and am looking to sell it. I got it at a great price
and am selling it at a great price on eBay (starting today.)
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=46325&item=3691142652
If you're not interested, please let your friends or coworkers know
about it -- the auction ends in 7 days. Only have this one.
If you have any questions please feel free to email me,
Jason
email***@***.com
Network Engineer and Programmer
|
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Index ‹ java-programmer |
- Next
- 1
- Thread Contructor QuestionHi All,
I'm curious about something. In a Java certification study guide,
they have the following code and they ask what the result is:
class MyThread extends Thread
{
public static void main(String [] args)
{
MyThread t = new MyThread();
Thread x = new Thread(t);
x.start();
}
public void run()
{
for (int i = 0; i < 3; ++i)
{
System.out.print(i + "..");
}
}
}
It's simple enough. Except, earlier in the text (and in the Java API)
they mention that the only constructors for the Thread class are:
Thread()
Thread(Runnable target)
Thread(Runnable target, String name)
Thread(String name)
Thread(ThreadGroup group, Runnable target)
Thread(ThreadGroup group, Runnable target, String name)
Thread(ThreadGroup group, Runnable target, String name, long
stackSize)
Thread(ThreadGroup group, String name)
I don't see Thread(Thread). And I don't see how it can be a Runnable
except for that they share the same method: run().
- 2
- Remove "Padding" from GridLayout/ButtonsI have a 10x10 grid of buttons created using a GridLayout. Each button has a
30x30 pixel GIF icon on it.
Unfortunately, nomatter what I try, I can't seem to get each icon to sit
side by side (so that there's no gap between them). Currently there's an
approximately 5 pixel gap between each GIF image.
So far I've tried:
grid_button.setSize(new Dimension(30, 30)); // to set each button to 30x30
_board_panel.setSize(new Dimension(30*y_size, 300*x_size)); // sets grid
board to 30 times the number of grids in each dimension
... but neither seems to work.
How do I get it so that there's no gap between each GIF? I need the size of
each square in the grid to be fixed to exactly 30x30, not relative to the
size of it's holding panel.
TIA.
- 3
- launching a program from a Swing GUICan someone point me to a URL where I can look at sample code
for launching a program from a Swing GUI. In my case I'd like
to use a FileChooser and click on a Shell script to start a program
which displays info.
I have tried myself with no luck. Even a suggestion on a text with
sample code would be appreciated.
Thank you.
- Andrew M. Neiderer
US Army Research Lab
- 4
- OMLETv4: The Ultimate Oracle Monitoring Software"omlet" <email***@***.com> wrote in message news:<email***@***.com>...
> Dear DBA,
>
> You are cordially invited to test and review our windows native and
> 100% pure Java Oracle 9i/8i Monitoring Application (OMLET). OMLET is
> the Ultimate Visual Real Time Oracle Monitoring Tool. As the
> leading expert in your field, your objective opinion is highly valued
> and your feedback is very appreciated. We would like to encourage you
> to distribute free copies of OMLET to your associates and fellow DBAs.
>
> Omlet can be downloaded from:
>
> http://www.omlet.org/download.html
>
> or any of many mirrors worldwide:
>
> http://www.geocities.com/teraknowledgesystems/download.html
>
> http://www.iboogie.com/search.asp?name_search_type=1&name_lang=50&name_query=omlet+oracle
>
> Thank you for your time, positive feedback.
>
> Cheers,
>
> The OMLET Team
> Tera Knowledge Systems, Inc.
>
> PS. If you feel that this is spam and you read this by mistake, we
> apologize, ignore it and have a nice day.
>
- 5
- How can I know which button is clicked in JDialog ShowModalHi, all,
In a programme using swing (homework), I use a JDialog window. There are
two buttons on this dialog window. I want to write the program in this way:
// some thing
JDialog d = new ...
...
d.setModal(true);
d.show();
if (d.close = btnOk){
...
} else if (d.close == btnCancel){
...
}
In fact I want to use this way like in the windows programming:
int i = d.showModal();
if (i == ok){
...
} else if ( i == cancel){
...
}
Please help me. I am a newbie in swing programming.
Thanks a lot.
- 6
- How to get the contextPath in a servlet's init-method?Hi,
is there a way to get the context path inside the servlet's init-method?
In an URL like http://localhost/myApp/... i want to get the Attribute
/myApp.
I know, I can get ist with HttpServletRequest#getContextPath(), but in the
init method I don't have a servletRequest.
Is there another way to get it that also works with different Java
Containers?
..
bye Stephan...
- 7
- How to make choices visible in a JComboBox?Hi,
I'm writing a JComboBox with a custom Editor. The idea is that when
the user inputs a string, the choices are narrowed down to match the
input.
When the user starts typing, how does one reveal the available
choices? In other words, how does one make the choices open up as if
the little "arrow down" next to the combo box is pressed?
Many thanks in advance,
Aaron
- 8
- Square rootWhat is the method of finding the square root of a number?
- 9
- [UPD] SQLeonardo MMV.III released[http://querybuilder.sourceforge.net]
SQLeonardo is a database query tool written in Java, distributed under
the GNU GENERAL PUBLIC LICENSE.
Include FreeQueryBuilder to create SQL queries without directly writing
SQL. All queries can be saved in a workspace for later use. Works
with any JDBC compliant database(ORACLE,MySQL,HSQLDB,Firebird,DB2)
*** NEW ***
Edit tables directly via the data grid
Regards Nickyb
- 10
- java sockets passing objectsI have a very simple java application in which I need to pass an
object via sockets. It is an object that I have defined, which has
implemented Serializable. The problem occurs when I send an instance
of the object, when I recieve it on the other end, it is null. The
reciever does in fact recieve an object of the correct type (my user
defined object) but it is empty although the one I sent was not. Is
there something I need to do in the readObject() or writeObject()
methods? Any help would be appreciated, thank you!
For reference, here is my user defined object:
class nodeMessage implements Serializable
{
String text;
int messageID;
int senderID;
int recieverID;
String[] stamp;
public nodeMessage(){}
public nodeMessage(String t, int mID, int sID, int rID,
String[] s)
{
text = t;
messageID = mID;
senderID = sID;
recieverID = rID;
stamp = s;
}
public String getText()
{
return text;
}
public int getMID()
{
return messageID;
}
public int getSID()
{
return senderID;
}
public int getRID()
{
return recieverID;
}
public String[] getStamp()
{
return stamp;
}
public void addStamp(String s)
{
stamp[stamp.length] = s;
}
private void writeObject(java.io.ObjectOutputStream out)
throws IOException{
}
private void readObject(java.io.ObjectInputStream in)
throws IOException, ClassNotFoundException{
}
}
- 11
- Question about try, catchHow do I make the code go back so that once user type more than 20
characters in the string, it will print a message and then continue to
process more strings?
Here is the code:
//StringTooLongExceptionDriver
import java.util.Scanner;
import java.io.*;
public class StringTooLongExceptionDriver
{
//
// The main method prompts and reads strings. If the string has more
// than 20 characters, it throws a StringTooLongException exception.
//
public static void main(String[] args){
//System.out.println("Enter a string: ");
String strInput = "";
int newStringCounter;
int arrayCounter=0;
char[] myCharArray = new char[20];
InputStreamReader myRead = new InputStreamReader(System.in);
BufferedReader in = new BufferedReader(myRead);
try{
while (!(strInput.equals("DONE"))){
System.out.println("enter your string: ");
int x = 0;
strInput = in.readLine();
newStringCounter = strInput.length();
if (!(strInput.equals("DONE"))){
while (newStringCounter > 0){
myCharArray[arrayCounter] = strInput.charAt(x);
newStringCounter--;
System.out.print("the last char at array is " +
myCharArray[arrayCounter]);
System.out.println(" and array counter is " + arrayCounter);
x++;
arrayCounter++;
}
}
}
if (strInput.equals("DONE")){
System.out.print("you have enterd: ");
for (int i=0; i<=arrayCounter-1; i++){
System.out.print(myCharArray[i]);
}
System.out.println("");
System.out.println("End of the string you have enterd!");
}
}
catch(Exception e){
StringTooLongException error = new StringTooLongException("Total
string character now is larger than 20 characters");
error.EndHere();
}
}
}
class StringTooLongException
{
String statement = "";
public StringTooLongException(String myError){
statement = myError;
System.out.println(statement);
}
public void EndHere(){
System.out.println("please try again");
System.exit(0);
}
}
- 12
- Help with Spring MVC XSLT viewHello,
I work with a lot of XML, so I am trying to get Spring MVC to
transform it for me. I have followed the examples in the reference
manual, but I keep getting null pointer exceptions when the view is
resolved. Could someone be so nice as to cut and paste some code
they've written that is a subclass of the AbstractXsltView? Thanks.
Also, here is the stack trace I get when the view is resolved.
java.lang.IllegalArgumentException
at
oracle.xml.jaxp.JXTransformer.setOutputProperty(JXTransformer.java:619)
at
org.springframework.web.servlet.view.xslt.AbstractXsltView.doTransform(AbstractXsltView.java:394)
at
org.springframework.web.servlet.view.xslt.AbstractXsltView.doTransform(AbstractXsltView.java:351)
at
org.springframework.web.servlet.view.xslt.AbstractXsltView.renderMergedOutputModel(AbstractXsltView.java:304)
at
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
at
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1051)
at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:817)
at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:727)
at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:396)
at
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:350)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Unknown Source)
May 2, 2006 2:15:56 PM org.apache.catalina.core.StandardWrapperValve
invoke
SEVERE: Servlet.service() for servlet MedhomeSpringMVC threw exception
java.lang.IllegalArgumentException
at
oracle.xml.jaxp.JXTransformer.setOutputProperty(JXTransformer.java:619)
at
org.springframework.web.servlet.view.xslt.AbstractXsltView.doTransform(AbstractXsltView.java:394)
at
org.springframework.web.servlet.view.xslt.AbstractXsltView.doTransform(AbstractXsltView.java:351)
at
org.springframework.web.servlet.view.xslt.AbstractXsltView.renderMergedOutputModel(AbstractXsltView.java:304)
at
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
at
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1051)
at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:817)
at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:727)
at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:396)
at
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:350)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Unknown Source)
- 13
- 14
- How to layout OK and Cancel buttonsHello,
is there a satndard way to layout the buttons "OK" and "Cancel" for java programs? I'm asking because java already ask to use some defined icons if possible.
I generally put "OK" to the left and "Cancel" to the right. Is this "the" way?
TIA
- 15
- Web page to build a web pageDoes anyone have any suggestions or examples of creating a web page to
allow an end user to design a form. I need to design an application
where the end user (administrator) can design a form with standard
html components such as text boxes, drop down lists etc. Attach drop
down list to database tables, and enter expression for certain fields.
Then once the form is saved another user (business) can display the
form and fill it in, at which time the expressions would be evaluated
based on the data entered.
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