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comp.lang.java.programmer Post New
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Subject Posted Replies From
Problem in executing multithreaded program

Hi all, I have a java program with 3 thread, thread1 , thread2 , thread3. When I call thread1.run() , thread2.run() and thread3.run() .. the execution of thread1 and thread2 start but thread3 does not run. Thread1 contains linked list handling , Thread2 contains execution of "tcpdump" command and Thread3 contains execution of "ping" command. Can anybody tell me why my thread3 is not running ??

3/13/2010 8:58:01 AM 0 vaibhav <khatavkarvaibha...@gmail.com>



XPath question.

I have a document which has two elements: ValueOverride and ValueDefault For example: <MyDoc> <ValueOverride>The override value</ValueOverride> <ValueDefault>The default value</ValueDefault> </MyDoc> I need a single XPath expression that will return ValueOverride if it is non-empty, and ValueDefault otherwise. Is this possible to do with XPath? Thanks, Daniel. -- Daniel Pitts' Tech Blog: <http://virtualinfinity.net/wordpress/>

3/12/2010 10:56:46 PM 4 Daniel Pitts <newsgroup.spamfil...@virtualinfinity.net>
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3/12/2010 7:35:19 PM 0 ghgh <resourt...@gmail.com>
Cheeps Guest houses Karachi Independents fully furnished

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3/12/2010 5:18:43 PM 0 jgjghj <resourt...@gmail.com>
Date comparisons

Hi, I'm using Java 1.5. I have a java.util.Date object and I would like to determine if it's date (i.e. year, month, and day) are greater than (in the future) or equal to today's date (year, month, and day). However, I don't care about any time component (hour, minute, second ...) when the comparison is taking place. What is the easiest way I can determine this? Thanks, - Dave

3/12/2010 4:12:03 PM 10 laredotornado <laredotorn...@zipmail.com>
accessing java bean's property

Hi, I have this bean: public class Item { private String type; private Boolean pub; public String getType() { return type;} public Boolean isPub() { return pub;} } I can use item.getType() to get the type value, but I'm looking for a generic way, say I have a string 'Type', then I'd like to get the value of type of a certain object, any idea how to achieve this? Thanks. A.C.

3/12/2010 2:02:15 PM 3 "angelochen...@gmail.com" <angelochen...@gmail.com>
Open popup from JSP - Servlet ??

Could some Java guru please help ?? I have a JSP, from inside which of which I do a POST to a Servlet, which then does some operations inside its 'doPost' method and at the end dynamically generates a Web page. Currently, this page is rendered inside a frame. How do I make the page be rendered inside a popup window ? Any hints, suggestions would be of immense value - thanks in advance for your help.

3/12/2010 10:43:51 AM 2 Daku <dakup...@gmail.com>
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3/12/2010 8:41:55 AM 0 kathar008 basha <kathar...@gmail.com>
trouble download drools example via cvs

hi, I have attempted to do the first set of instructions mentioned in the link below to anonymously download drools via cvs...not sure is it is working...don't know if its an issue at my end of their end. Anyway I can trouble shoot this issue. Objective is to download the cvs repo. http://legacy.drools.codehaus.org/CVS+Download+Instructions --deostroll

3/12/2010 5:16:30 AM 6 deostroll <deostr...@gmail.com>
solutions manual to A First Course In Probability 7th Edition by Sheldon M. Ross

I have the comprehensive instructor's solutions manuals in an electronic format for the following textbooks. They include full solutions to all the problems in the text, but please DO NOT POST HERE, instead send me email including title and edition of the solutions manual u need. NOTE: This service is NOT free My email: markrainsun( at )gmail( dot )com Here are some from my list ... solutions manual to A First Course in Differential Equations (7th ed.) Zill & Diferential Equations (5th ed.)Zill & Cullen solutions manual to A Course in Game Theory by Osborne, Rubinstein solut

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3/12/2010 3:59:03 AM 0 marrylin <lin.jiany...@hotmail.com>
First class developer: who ?

Someone says if one does not know the difference between "equality" and "equivalence", then one is an entry-level developer at best. What is your opnion ? (I think we should not talk about mathematical concepts, since it is the software developer in question.) Thanks.

3/12/2010 3:10:57 AM 29 "...@my-rialto" <ecp_...@my-rialto.com>
Java Interview Questions

This article attempts to discuss core java IT technical interview questions in detail. These are some of the java job interview questions that are frequently asked in java interviews. Questions from different people and communities are consolidated in place for your convenience. These questions are organized according to various java topics. Follow the content : http://www.ezdia.com//Java-Interview-Question/Content.do?id=1340 This is to help you prepare well for java related technical interviews. I wish you good luck and hope you find a great job.

3/11/2010 5:32:15 PM 0 Additya <addy....@gmail.com>
ImportError: No module named ffnet

I hope you'll forgive if this is not the correct NG. I have the .py file in Eclipse #@PydevCodeAnalysisIgnore from ffnet import ffnet, mlgraph topology = mlgraph( (2, 3, 1) ) nn = ffnet(topology) I select RunAs / Python Run I get the error from ffnet import ffnet, mlgraph ImportError: No module named ffnet In the folder Python26\lib\site-packages I see ffnet-0.6.2-py2.6.egg-info also a folder ffnet in that folder there is a folder Examples If I click one of the examples pyrhon.exe opens and runs it OK. Is there enough in the above for you to tell me how to procede?

3/11/2010 2:41:51 PM 4 " Cal Who" <CalWhoNOS...@roadrunner.com>
Speaking of thread safety?

Does anybody know if the Observable/Observer calls to update() are on the EDT? Thanks, -- Knute Johnson email s/nospam/knute2010/

3/10/2010 6:15:07 PM 27 Knute Johnson <nos...@rabbitbrush.frazmtn.com>
Exception Handling

public class Qn24 { static class A { void process() throws Exception { throw new Exception(); } } static class B extends A { void process() { System.out.println("B "); } } public static void main(String[] args) { A a = new B(); a.process(); } } Why does the above code results in a compilation error? since it is always invoking class B's process() method which doesnt throw any exception.

3/10/2010 5:53:40 AM 23 Javas <deepan....@gmail.com>
JDBC Connection Issue

This is a multi-part message in MIME format. --------------090708090704040103010901 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Hi All, I'm running a simple perl script that checks if port 3306(mysql) is open or not and display's either PASSED or FAILED Perl Code: http://pastebin.org/108205 This small script seems to be working fine, but when I put into place our java applications that are using mysql though the jdbc driver started to crash (The services crash over night after a jboss restart). I started to do some testing

3/10/2010 4:44:40 AM 20 jross <jo...@cognyx.com>
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3/9/2010 8:05:55 PM 0 jakob jak <hosting.man2...@gmail.com>
Hashcode and Equal

import java.util.*; public class Qn353 { private String name; public Qn353(String name) { this.name = name; } public boolean equals(Object o) { if ( ! (o instanceof Qn353) ) return false; Qn353 p = (Qn353) o; return p.name.equals(this.name); } public static void main(String [] args) { HashSet<Object> hs = new HashSet<Object>(); hs.add(p1); hs.add(p2); System.out.println(hs.siz

3/9/2010 10:09:09 AM 5 Javas <deepan....@gmail.com>
Thread safety documentation

The "Calendar.getInstance() thread safe?" is yet another instance of a recurring problem with Java APIs, the lack of consistent documentation and default rules for thread safety. Often, these questions can only be resolved by examination of the source code, which is unsatisfactory because it is vulnerable to future changes that would preserve everything that is documented. I now have some free time, and would like to try to contribute to a resolution of the problem. Is there an existing effort I should join, or do I need to start a new one? Patricia

3/8/2010 11:57:10 PM 9 Patricia Shanahan <p...@acm.org>
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3/7/2010 6:24:17 PM 3 madhan <karun.mad...@gmail.com>
Calendar.getInstance() thread safe?

Hi, In a multi-threaded application, I encountered problems with dates being "reset" to 1970, or being negative when converted into ms since 1970. I use Calendar to do operations on dates, and as I see no obvious bug in the code, and as the problem occurs randomly and after a certain time, I was wondering if that was a multi-threading issue. So the question is: Is Calendar.getInstance() thread safe? I did not find a satisfying answer searching the web. Is there asbolutely no possibility that two (or more) threads calling Calendar.getInstance() at the same time get the sa

3/7/2010 3:59:57 PM 16 endymion <pubc...@free.fr>
INFORMATICAS INSTALLATION STEP BY STEP

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3/6/2010 5:52:19 PM 0 serve <pettupinna...@gmail.com>
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3/6/2010 4:21:40 PM 0 soniyaa 1111 <soniyaa1...@gmail.com>
Call for Paper The International Journal of Computer Science (IJCS)

Call for Paper The International Journal of Computer Science (IJCS) publishes original papers on all subjects relevant to computer science, communication network, and information systems. The highest priority will be given to those contributions concerned with a discussion of the background of a practical problem, the establishment of an appropriate model, the determination of a solution, approximate or exact, analytical or numerical, and a discussion of the relevance of the results when applied to the real-life problem. Paper submissions are invited in the area of computer science, i

3/6/2010 3:32:45 PM 0 editor ijcs <ijcsorgedi...@gmail.com>
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3/5/2010 8:19:20 PM 0 Google Adsense <earnmoney9...@gmail.com>
Trouble converting an XML doc into a string

Hi, I'm using Java 1.5, dom4j 1.6, axis 1.4, cglib 2.1_3, and commons- beanutils 1.7.0. I'm trying to figure out why converting an XML document to a string is not working. I'm trying to build a very simple XML doc like so ... private Document createXMLDocument(String firstName, String lastName, String number, String year, String month, DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder = factory.newDocumentBuilder(); Document document = builder.newDocument(); Element documentRoot = document.createElement("response

3/5/2010 5:10:18 PM 2 laredotornado <laredotorn...@zipmail.com>
Applet Navigation

I got asked this question about Applet use by blind people. I did not know the answer. "One question I was hoping you would answer what keystroke allows a user to get into an applet on a web page, or get out of an applet on a web page? I'm asking because if someone is disabled, a web app must perform all function without a mouse and only using a keyboard. When I go to you sample pages, it is easy to navigate using the keyboard (using Tab and Shift+Tab) to get to every field in the applet, but I cannot get out with the keyboard to get to the other links on the page. If I Alt+

3/5/2010 8:00:19 AM 3 Roedy Green <see_webs...@mindprod.com.invalid>
CodeWarrior begins on Mar 5, 06:00 pm IST. Certificates & Prizes worth 20,000 INR.

Problem Statements of CodeWarrior Round 2 will be released on _Mar 5, 06:00 pm IST_. Registrations are open till Mar 14, 09:00 pm IST. So form your team now, if you have not participated in Round 1. Here is the problems break-up: * 2 Puzzles * 2 Algorithm Designing Problems * 2 C/CPP Debugging Problems * 1 Algorithm Intensive Programming Challenge There are prizes worth more than _20,000 INR_. _Codechef T-Shirts_ will be awarded to the first team to score full marks for the Algorithm Intensive Programming Challenge. _Certificates to be given to 30 teams_. Note: Round2

3/5/2010 7:51:41 AM 0 Abhishek Gupta <abhi.gup...@gmail.com>
CodeWarrior begins on Mar 5, 06:00 pm IST. Certificates & Prizes worth 20,000 INR.

Problem Statements of CodeWarrior(http://itbhu.ac.in/codefest/ event.php?eid=4) Round 2 will be released on _Mar 5, 06:00 pm IST_. Registrations are open till Mar 14, 09:00 pm IST. So form your team now, if you have not participated in Round 1. Here is the problems break-up: * 2 Puzzles * 2 Algorithm Designing Problems * 2 C/CPP Debugging Problems * 1 Algorithm Intensive Programming Challenge There are prizes worth more than _20,000 INR_. _Codechef T-Shirts_ will be awarded to the first team to score full marks for the Algorithm Intensive Programming Challenge. _Certi

3/5/2010 5:17:47 AM 0 codefest <1989.gau...@googlemail.com>
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3/5/2010 4:01:34 AM 0 kathar008 basha <kathar...@gmail.com>
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3/5/2010 3:09:11 AM 0 lucky-villa <weasle182...@googlemail.com>
How to convert one text file into one large String?

I remember that there is a way(just one method call) to convert one text file ("msg.txt") their content into one String. For example: msg.txt has the following content: Hello? 123 Good morning I want to get the String "Hello?123Good morning" from it. I know I can do it manually by reading it line by line and concatenate them. But I remember there is a method calling to accomplish this. I searched all the methods in File.java(from Sun) and FileUtils.java(from Apache) and could not find it. Can you help me? Thank you.

3/4/2010 9:54:59 PM 15 www <...@nospam.com>
How to get the file name from a String containing the path plus the file name?

Hi, I have a String "dirA/dirB/dirC/file.txt". How to use String manipulation technique to get "file.txt"? String fullName = "dirA/dirB/dirC/file.txt"; int index = fullName.lastIndexOf("\\"); //here is a problem, if I try lastIndexOf("\"), there is a compile error String fileName = fullName.subString(index); //but does not work Thank you very much. ps: I am working on linux.

3/4/2010 8:06:05 PM 5 www <...@nospam.com>
Warning message with proprietary class

In my Tomcat 6.0.20 container I am using sun.misc.BASE64Encoder to get NTLM Intranet username and everything works. Unfortunately I get the below warning message after I compile the class: ----------------------- Auth.java:3: warning: sun.misc.BASE64Encoder is Sun proprietary API and may be removed in a future release import sun.misc.BASE64Encoder; ^ 1 warning ---------------------------- It seems the sun.misc.BASE64Encoder is Sun proprietary API and is available from the rt.jar? I was wondering if I should put the rt.jar in my web app lib folder (\WEB-INF\lib) ju

3/4/2010 1:55:45 AM 1 francan <franca...@yahoo.com>
Best Practices for Writing XML

What are the best-regarded Java classes for writing XML these days? I'm afraid I've been out of touch with XML for a few years and long ago lost track of what is well-regarded in the Java community for creating XML files. I have a need to write an XML file but NOT to work with it any further; the file will be read by Microsoft Word but not processed any further. If someone can point me to some suitable classes for writing XML - and, ideally, a tutorial describing the proper use of these classes - I would really appreciate that. -- Rhino

3/3/2010 9:42:50 PM 13 "Rhino" <no.offline.contact.ple...@example.com>
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Embedded Industry Expert Opinions Needed

VDC is conducting its annual survey of mobile and embedded engineers so if you are involved in the engineering of mobile or embedded systems/software, this is your chance to influence key solution suppliers. The research covers embedded software, hardware, tools, and development practices. Your thoughts will improve our insights into the engineering community and help to influence next generation solutions. In addition, VDC will provide all respondents who complete the survey: * Instant access to a summary of VDC's 2009 survey findings; * Entry into a prize drawing for one o

3/3/2010 5:27:09 PM 0 OnTargetEmbedded <crom...@vdcresearch.com>
Java3D: how to transform an object loaded with obj loader

How can I transform an object which I loaded with a loader as below? What is the code when I want to move it to (5,5,5)? thanks ObjectFile f = new ObjectFile(); Scene loadedShip = null; try { loadedShip = f.load("C:/Users/Nicolas/Documents/ NetBeansProjects/3dGame/src/Gamestar/obj.obj"); } catch (FileNotFoundException e) { System.err.println(e); System.exit(1); } catch (ParsingErrorException e) { System.err.println(e); System.exit(1); } catch (IncorrectFormatException e

3/3/2010 5:12:28 PM 2 NickPick <dickreu...@yahoo.com>
Java DOM: add an attribute to a node

Hi all, I need to write a new XML file from scratch, I've just a doubt about adding an attribute to an element. This is the code, but maybe there is a way to write less code to do that. What do you think about that ? //START CODE .... Document doc=docBuilder.newDocument(); Node rootNode=doc.createElement("MarketNews"); Attr id=doc.createAttribute("id"); id.setValue("123456"); NamedNodeMap rootAttr=rootNode.getAttributes(); rootAttr.setNamedItem(id); doc.appendChild(rootNode); .... //END CODE Thanks all and best regards, Ale

3/3/2010 4:33:01 PM 2 Ale <abonizzon...@gmail.com>
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3/3/2010 10:12:05 AM 0 JTP PR <janinepellet...@yahoo.ca>
"Class not found" when loading java Applet from forwarded Domain?

I have a problem with the following situation: A domain www.aaa.com is linked/forwarded to a sub directory of another domain e.g. www.bbb.com\aaastuff on another server. So when a user enters www.aaa.com in his browser all stuff should be retrieved and presented from the directory of www.bbb.com\aaastuff. This works well in general except one thing: The web page contains an applet with the definition shown below. Instead of showing the applet a white rectangle is shown and the java console tells the user: java.lang.ClassNotFoundException: Logo.class Why? Yes, the java cl

3/3/2010 7:41:10 AM 1 sgr...@inf.uni-karlsruhe.com (Susanne Grabe)
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3/2/2010 4:09:45 PM 0 kin <kindlesyst...@gmail.com>
Microsoft Word Autocorrects

I have been attempting to decode a file used my Microsoft Word, one that stores the autocorrects, possibly to create some utilities to manage them, export, import etc. I wrote this little program to dump out the contents of an autocorrect file to test my understanding of the format. It had a number of unexpected wrinkles after I thought I had it nailed. There are still few puzzles left. I thought some people here might enjoy the challenge of solving them. If not, just ignore this post. /* * @(#)Autocorrects.java * * Summary: read MS Word autocorrects file. * * Copyrig

3/2/2010 11:39:24 AM 1 Roedy Green <see_webs...@mindprod.com.invalid>
java Date to c# ticks

Hi I have a c# application which reads data from a database. Some of the data is a "time" which is actually a c# "ticks" value (written to the db by another c# application). Now I am writing a java application, which collects data and writes it to the database for the c# application to read. So how do I convert a java "Date" to a value which the c# application can interpret as "ticks"? Thanks, Peter

3/2/2010 7:09:39 AM 22 "Peter K" <pe...@parcelvej.dk>
jdbc connection

hey m writing program in java to connect it to mysql. I have given driver name as Class.forName("com.mysql.jdbc.Driver"); but i am getting ClassNotFoundException. Please help me what shall i do.

3/2/2010 4:35:11 AM 3 sangeeta chowdhary <sangitachowdh...@gmail.com>
Best way to check if all elements in a List are unique

Hi, I"m using Java 1.5. Given a java.util.List that I know to have at least one element, what is the best way to check that all elements in the list are unique ? Thanks, - Dave

3/1/2010 10:29:29 PM 25 laredotornado <laredotorn...@zipmail.com>
Reflection accessing subclass

Hi, Can anyone please tell me how I would access a subclass members with reflection. So for example: public class MyTestClass { public class SourceObj { String mytest1; } String mytest1; int mytest2; long mytest3; List<String> mytest4 = new java.util.ArrayList<String>(); HashMap<String,String> mytest5 = new HashMap<String, String>(); SourceObj mytest6 = new SourceObj(); } I want to set the value of mytest6.mytest1 Thanks, Max

3/1/2010 10:28:05 PM 1 askmax <ask...@gmail.com>
read html file into org.w3c.dom.html.htmldocument

Hi, how do i read a local html file into a org.w3c.dom.html.htmldocument ? I want to dynamically change the values of the elements in html. TIA J.

3/1/2010 1:54:50 PM 1 "Jozza" <...@hmm.com>
EL and regular expression

I am trying to use a Regular Expression in Tomcat 6.0.20 with EL and its not working: <c:set var="info" value="joe2222" /> Here are results = ${fn:replace(info,'\d+','')}<br><br> Error message - org.apache.jasper.JasperException: An exception occurred processing JSP page /jsp/reg2.jsp at line 14 11: 12: 13: <c:set var="info" value="joe2222" /> 14: Here are results = ${fn:replace(info,'\d+','')}<br><br> Please advise.

2/28/2010 2:32:49 PM 0 francan <franca...@yahoo.com>
EL and regular expression

I am trying to use a regular expression in EL and its not working: <c:set var="info" value="joe2222" /> Here are results = ${fn:replace(info,'\d+','')}<br><br> Error message: org.apache.jasper.JasperException: An exception occurred processing JSP page /jsp/reg.jsp at line 14 Please advise.

2/28/2010 2:29:30 PM 0 francan <franca...@yahoo.com>
Top Certifications in all Fields - A Complete Guide

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2/28/2010 6:08:29 AM 0 IT eBooks <infotech.eb...@gmail.com>
Norton Internet Security 2010 v17.5.0.127 Final

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2/27/2010 10:30:49 PM 0 hussam elagmy <translatorhos...@gmail.com>
Norton Internet Security 2010 v17.5.0.127 Final

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2/27/2010 10:29:38 PM 0 hussam elagmy <translatorhos...@gmail.com>
Could this unclosed() byteArrayInputStream cause high Heap usage ?

Hi all, As part of our reporting integrated with our JSF/JSP application, the report is converted to PDF then sent to browser for user to display. mean while during peak load our Heap usage could reach 3.5GB - 4GB. So I am suspecting the unclosed byteArrayInputStream is the cause. (This is a production application so I am collecting information before change the code) Is the unclosed() byteArrayInputStream really cause the problem ? (the codes is below) Thank you, Krist ByteArrayInputStream byteArrayInputStream = (ByteArrayInputStream) reportClientDoc.getPrintOutput

2/5/2010 11:21:04 AM 0 Krist <krisl...@gmail.com>
Motivation of software professionals

Hi all, I am doing a research about motivation in software development, the most efficient practices to motivate software engineers, their popularity, etc. As a part of the research, I am doing an online survey for software engineers and managers in software development. It takes just several minutes and filling it is a good opportunity to share your opinion about the motivation practices being used in the software industry today: http://ask.wizefish.com/en/MotivationSurvey.aspx Anyone who does the survey and leaves any contacts will be sent the results. Also, if someone is

2/5/2010 11:19:22 AM 7 Stefan Kiryazov <stefan.kirya...@gmail.com>
symbol lister for java (like nm)

All, I'm looking for something the equivalent of nm in java. I want to be able to give a utility either the name of a class file, or the name of a jar file, have that utility go into the jar file and give a listing of all the symbols in that file (like nm does for C). I know that c++filt demangles these symbols, but I'm not sure how to get a list of mangled symbols in the first place to demangle! Anyways, I would have thought this would be a fairly simple (and generic) request, but apparently not - a google search for 'symbol list tool java' and 'nm for java' returns nothing str

2/5/2010 1:13:24 AM 1 horos22 <ed.pesc...@gmail.com>
Example of building a list of file names?

Can anyone point me to an example of Java code that searches for all the files within a given Windows directory (and doesn't recurse into subdirectories) and then stores the file names in some kind of array or collection? For example, if my directory was c:\foo, it would store a list of all the files found in the foo directory. I've lost most of my old code examples due to a hard drive crash and feel sure that this kind of code must have been done umpteen times before. I'll write it from scratch if I have to but I'm hoping some kind soul can point me to an example or just post

2/4/2010 7:13:59 PM 5 "Rhino" <no.offline.contact.ple...@example.com>
Protected nested generic constrained inheritance

Hi, Two example programs below, I'm wondering if someone could tell me why example 1 doesn't work, given that example 2 does? The error says that a nested class has protected access, but I am accessing it from an inheriting class Thank you, Kind regards, Eliott ///////////////////////////////////////////////////////////////////// // Example 1 ///////////////////////////////////////////////////////////////////// // test/A.java package test; import test.A.NA; public class A<T extends NA> { protected static class NA { } } // test/extend/B.java

2/4/2010 6:10:09 PM 9 MRe <pgd...@gmail.com>
Java reg exp question

Hi, I'm using Java 1.5. How do I find all strings matching a particular pattern in a larger string? For example, I have HTML page source, and I want to find all the names of the checkboxes where I'm guaranteed the checkboxes will appear on the page like so ... <input type="checkbox" value="true" name="invoicingReport:invoicingTable:1:_idJsp17"/> Thanks for your help, - Dave

2/4/2010 5:50:32 PM 1 laredotornado <laredotorn...@zipmail.com>
A First Course in the Finite Element Method, 4th Edition logan

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2/4/2010 12:25:48 AM 0 Peter Kalvin <kalvinman...@gmail.com>
call javascript library in jsp

How to call the tablekit javascript library in jsp? I downloaded the tablekit javascript library and put it in the js directory which is in the jsp directory. i.e. the directory is C:\workspace\com.mycomp.data.war\WEB-INF\jsp\js The jsp page is as follows and display correctly with FF and chrome on Windows Vista. However, the column of the page is not sorted by clicking on the column. i.e. the tablekit javascript library sorting function does not work on the web page generated by jsp. <html xmlns="http://www.w3.org/1999/xhtml"> <body> <table border="1" class="sortable r

2/3/2010 3:07:36 PM 5 albert kao <albertk...@gmail.com>
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2/3/2010 2:07:38 PM 0 qwertyyyy <qwerty204102...@gmail.com>
CardLayout & setting focus problem

Hello - I'm using CardLayout to edit few cards of information. Unfortunatelly there is problem - when I show next card - text box on next card don't receives focus automaticaly. Calling requestFocusInWindow method does not work to. Could you help me. Regards Jacek

2/3/2010 10:48:40 AM 3 "JKW" <jacek.kwa...@wp.pl>
Dynamically refresh (update) JSP webpage when JMS notification is received

After a notification from JMS is received, how to dynamically refresh (update) a JSP webpage? Please post any tutorial or website or idea. This is for FF, Chrome, IE on windows Vista & 7. Thanks.

2/2/2010 10:00:44 PM 1 albert kao <albertk...@gmail.com>
Foreign keys in MySQL and referential integrity of Database

A foreign key in a My Sql database is a field (or fields) of a table that points to a primary key of an other table. Such keys are defined in a database to ensure that only fields that supposed to appear in a database may be permitted. What is their requirement ? Why are they useful ? For enhancing the referential integrity of your database, you need foreign key. Read more on how they are defined and created. Learn through some examples. http://sulabhjain.wordpress.com/2010/02/01/foreign-keys-and-referential-integrity-in-database/

2/2/2010 6:12:33 AM 0 Weasley <samyaksul...@gmail.com>
SWT: TextField ModifyListener

Hello everyone, quick question: If I have two text fields and want to clear the text of one when there is a ModifyEvent on the other one, I do the following: public class OrderModifyListener implements ModifyListener { MainWindow mainWindow; public OrderModifyListener(MainWindow window) { mainWindow = window; } public void modifyText(ModifyEvent e) { if (!(mainWindow.getQualifierField().getText().equals(""))) { mainWindow.getQualifierField().setText(""); } } } The following is happening: If there is text in the Qualifierfield, it is being c

2/1/2010 4:19:34 PM 5 "Claus K." <claus.k...@googlemail.com>
Access SNMP using Java

hi friends, could you please tell me how to access the MIB objects of SNMP using Java Code. and i very thankful If u refer any article related to SNMP using Java. Thanks in Advance

2/1/2010 11:07:21 AM 11 frank <frank...@gmail.com>
JPanel

Hi every body I am new at Java and I have a question for you.I just wonder how I can add several objects from several classes(lets say I have three classes MyLine, MyRectangle, and MyOval) to one JPanel class . I have tried this way but it did not work! public class MyPanel extends JPanel { MyPanel(){ MyRect rec = new MyRect(); MyOval ova = new MyOval(); add(rec); add(ova); } } I know that I can add several JLabel or JButton to Jpanel object but can I do this for Graphic classes as well? could you please give a hint about that? bes

2/1/2010 9:34:05 AM 0 BEHROUZ <behse...@gmail.com>
Write data to file

Hi All Do you know how to write data to file as below format first data is readable , second data is byte value for (int i = 192 ; i < 223 ; i++) { for ( int j = 129 ; i <= 223 , j++) { output to file i ,j ; output to byte of i , byte f j; } } I does not know how to update below file. import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.nio.ByteBuffer; import java.nio.channels.FileChannel; public class build_binary { public static void main(String[] args) { Strin

2/1/2010 8:42:44 AM 2 moonhkt <moon...@gmail.com>
Code and Creation 01324

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1/31/2010 5:35:11 PM 0 Virgina Hernandez<gh...@yahoo.com>
Jave ME and BT

Hi, Where is error in my function to connect with BT (middlet is signed with export root certificate to emulator) this code make exception: -------------------- String url = dAgent.selectService(serverUUID, ServiceRecord.NOAUTHENTICATE_NOENCRYPT, false); ----------------------------- Output: >Searching for service >javax.bluetooth.BluetoothConnectionException: Error in btl2cap::connect () > at com.sun.jsr082.bluetooth.btl2cap.L2CAPConnectionImpl.doOpen(), > bci=79 > at com.sun.jsr082.bluetooth.btl2cap.L2CAPConnectionImpl.<init>(), > bci=64 wha

1/31/2010 1:45:35 PM 0 "Rafal\(sxat\)" <gon...@(op).pl>
persistence / object backend to file / serialization

http://joafip.sourceforge.net/ can be see as a: - an "intelligent" serialization: write only changes, read only object needed - manage more object than memory can contains - an alternate persistence solution to relationnal database

1/31/2010 10:47:02 AM 27 luc peuvrier <lcp...@gmail.com>
Create Password Protected PDF from byteArrayInputStream

Hi All, We need to create a password protected PDF to send to Client's browser from JSF web application. We already have the report data in byteArrayInputStream, so we need a Java library to convert it into password protected PDF. Has anybody done this using free Java PDF Library, what is it ? Thank you, xtanto

1/31/2010 2:51:15 AM 1 Krist <krisl...@gmail.com>
Display image on form...

Hi All, I want to display user image on one form (like user profile page). I have to option as metion below: 1. Store image with its relative path in table column. 2. Store image in DB itself using blob as column data type. But each method hs its own drawback In first solution when we are using relative path it use OS level search using relative path which is a native call. In second method DB size will grow like any thing. I am confuse and not able to decide which approch will be good. I request you all to suggest me I should go with which approach also suggest if there is ot

1/30/2010 11:42:27 AM 3 Amit Jain <amitatgro...@gmail.com>
free website design software , flash website design , web site designers , to use website design software , nof 7.0 , easy web design , website designing software , website design software templates

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1/30/2010 12:40:25 AM 0 gabi neues <meandmymachin...@googlemail.com>
closing an app

Got a simple app that's a frame and a jpanel with buttons on it. Can't work out how to close it using one of the buttons rather than the graphical interface provided. -- Dirk http://www.transcendence.me.uk/ - Transcendence UK http://www.theconsensus.org/ - A UK political party http://www.blogtalkradio.com/onetribe - Occult Talk Show

1/29/2010 11:45:49 PM 2 Dirk Bruere at NeoPax <dirk.bru...@gmail.com>
Help resolving NoSuchMethodError

Hi, I'm trying to write some JUnit (3.8.1) tests using Maven (1.1, can't upgrade now), and Java 1.5. In my Maven dependency list, I have <dependency> <groupId>xalan</groupId> <artifactId>xalan</artifactId> <version>2.7.0</version> </dependency> And when I run my test, it dies with ... org.apache.xpath.compiler.FunctionTable.installFunction(Ljava/lang/ String;Ljava/lang/Class;)I java.lang.NoSuchMethodError: org.apache.xpath.compiler.FunctionTable.installFunction(Ljava/lan

1/29/2010 4:16:22 PM 1 laredotornado <laredotorn...@zipmail.com>
Save xls file as blob to db ?

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1/29/2010 11:59:50 AM 2 "tomo" <t...@tomo.net>
JNI crash Java and generates strange file - hs_err_pidxxx.log

Hello, I have developed windows application that calls java application using JNI. During this procedure application crashes and hs_err_pidxxx.log (xxx- any numbers) file is generated. I don't know from which part I should look for problem? Is it bug in windows or java application? Thank You

1/29/2010 11:27:38 AM 2 column <column.col...@gmail.com>
Read utf-8 file return utf-16 coding hex string ?

Hi All Why using utf-8, the hex value return 51cc and 6668 ? od -cx utf8_file01.text 22e5 878c e699 a822 with " befor and after http://www.fileformat.info/info/unicode/char/51cc/index.htm http://www.fileformat.info/info/unicode/char/6668/index.htm Output ...... 101 ? 20940 HEX=51cc BIN=101000111001100 102 ? 26216 HEX=6668 BIN=110011001101000 Java program import java.nio.charset.Charset ; import java.io.*; import java.lang.String.*; import java.lang.Integer.*; public class read_utf_line { public static void main(String[] args) { File aFile = new File("ut

1/29/2010 7:40:07 AM 19 moonhkt <moon...@gmail.com>
Why does this generic method need a cast on the return value?

I'm constructing a generic method with a couple of type parameters, and the method returns an instance of one of them. The function parameters provided should allow the type parameters to be determined. I've gotten all compile errors out of the generic method, but I'm confused by what happens when I call the method. Eclipse seems to think the method returns "Object", so it says it can't convert the response without a cast. The following is a very simplified version of my class, just to demonstrate the problem. Note that I have two generic methods and calls to them, one of them t

1/28/2010 11:04:48 PM 0 "david.karr" <davidmichaelk...@gmail.com>
Java class for data type mapper?

I'm sure someone has this. Need to map data types from all the various dbs. I can reverse it out of the Postgresql doc but does anyone at least have a better doc; for I'd have to look up each sqltype definition from the vendor jdbc classes. http://www.ispirer.com/wiki/sqlways/postgresql/data-types We need Java code, not a tool. Maybe this mapping exists inside some ETL open source tool already? Thanks in advance for any pointers or suggestions, TimJowers

1/28/2010 8:12:13 PM 6 New Java 456 <newjava...@gmail.com>
jsp/servlet target

Hello, in a JSP, I would like that my form call a servlet and then refresh current page. What is the best way to do that ? Should I use the form "target" field an how ? should I add parameter to my form or hardly code in my servlet the forwarded page ? Thanks a lot.

1/28/2010 1:53:11 PM 1 Pif <fjs...@laposte.net>
DSP in Java

I'm looking into the possibility of writing a Third Octave equalizer in Java, with the following features. SPDIF in, followed by EQ, then spdif out. Can Java do the i/o? Are there suitable DSP libraries available? -- Dirk http://www.transcendence.me.uk/ - Transcendence UK http://www.theconsensus.org/ - A UK political party http://www.blogtalkradio.com/onetribe - Occult Talk Show

1/28/2010 12:20:20 PM 1 Dirk Bruere at NeoPax <dirk.bru...@gmail.com>
Java Goldmine has been updated: http://preciseinfo.org/Convert/index_Convert_Java.html

Good news: Site search has been fully implemented. You can search the entire Java collection or a single chapter related to specific context to find what you are looking for. Bad news: We are currently out of sync with google. So, if you do a google search you might see a different article than what google shows. Java Goldmine collection contains the extensive collection of articles going back several years. It includes thousands of code examples and expert discussions on all major topics. The information is organized by relevant topics, covered >by the corresponding ch

1/28/2010 2:41:23 AM 0 ta...@mongo.net (tanix)
Code and Creation 69647

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1/28/2010 12:53:34 AM 1 Virgina Hernandez<gh...@yahoo.com>
Any ideas how to avoid this code checker error?

Hi, I'm using Java 1.5 on a Resin 3.0.19 web/app server. I'm using PMD as the code-checker, and in an EJB, it is complaining about public List<SubvendorCustomerRecord> getSubvendorCustomerReport( final Integer subvendorId) throws RemoteException { List<SubvendorCustomerRecord> results = new ArrayList<SubvendorCustomerRecord>(); try { AbstractReport report = new SubvendorCustomerReport(subvendorId); results.addAll( report.getReportData() ); } catch (Exception e) { LOG.error(e.getMessage(), e); throw new RemoteException(e.getMessage()); } return resul

1/27/2010 10:55:12 PM 35 laredotornado <laredotorn...@zipmail.com>
Can Someone please help me with my Computer stuff? 38889

I use the computer and the Net on a regular basis but I don't know a whole lot about it all, especially when it gets technical. I have an Acer Aspire AM5100-U5300A. I would like to speed this computer up, I would like a very good grasphics card without spending a fortune. Once I find out what I need I willo just go to ebay but I don't know what kind of meory, cards and such are compaitble with my machine. Help please. Virgina ghtpl@yahoo.com http://ipods-imacs.com DqWx/LComA&gS/D_)viG/l*mi

1/27/2010 8:58:27 PM 0 Virgina Hernandez<gh...@yahoo.com>
ZipInputStream bug

I was going to make a farm of data files that mostly contain bytes, but I wanted to make it possible to store 32-bit ints just in case. So I tried to use zip-encoding to make the sizes smaller in the usual case. Unfortunately, *some* of the data files don't read back correctly. Here is an example of a 4096-byte file that writes correctly with ZipOutputStream, but does not read back correctly with ZipInputStream. If I manually extract the zipped file, the data is correct. Is anyone maintaining the Zip utilities? Dan Hoey haoyuep at aol.com ============================> cut

1/27/2010 6:44:04 PM 3 Dan Hoey <haoy...@aol.com>
ANN: GR8 in the US CFP ending 05.Feb.2010

If you wish to submit a presentation, go to http://www.gr8conf.org/proposal/create. GR8 in the US is a one day conference dedicated to the software language Groovy, software development frameworks Grails and Griffon, and related technology. It will be held April 16th, 2010 at the Holiday Inn Bloomington I-35W, 1201 West 94th Street, Bloomington, MN 55431. Guillaume Laforge is the Groovy project lead and co-author of "Groovy in Action" will be the keynote speaker. Venkat Subramaniam, founder of Agile Developer and author or co-author of the books ".NET Gotchas" (O'Reilly), "Practices

1/27/2010 6:04:17 PM 0 bill turner <goo...@changent.com>
How to make CORBA pick the appropriate Proxy?

Starting out from an ior String, the app does essentially that: - ORB orb = org.omg.CORBA.ORB.init( new String[0], java.util.Properties() ); - org.omg.CORBA.Object servObj = orb.string_to_object( ior ); - factoryInst = SomeFactoryHelper.narrow ( servObj ); (plus lots of null-checks, and enclosing try-catch.) We use JacORB, and the problem is, that it isn't aware of the proxy that is configured with the browser. The application runs with webstart, and both the hosting website, the jnlp document and the jars named therein are successfully retrieved through t

1/27/2010 3:29:28 PM 1 Andreas Leitgeb <...@gamma.logic.tuwien.ac.at>
getResourceAsStream() problem

Hello, I have a problem with getResourceAsStream(). I'm using these tools: Eclipse JEE edition version 3.5.1 with the Apache CXF plugin and Apache Tomcat version 6.0.20. Java is version 6. This is under Windows. I've written a very simple JAX-WS web service, here's the complete code: package bioweb; import java.rmi.Remote; import java.rmi.RemoteException; import javax.jws.WebMethod; import javax.jws.WebService; @WebService(name="BioWebInterface", targetNamespace="http://bioweb/") public interface BioWebInterface extends Remote { @WebMethod(operationName="sayHello

1/27/2010 3:02:08 PM 19 Fencer <no.i.d...@want.mail.from.spammers.com>
Read utf-8 char one by one

Hi All how to read utf-8 char one by one ? Below not work. import java.nio.charset.Charset ; import java.io.*; import java.lang.String; public class read_utf_char { public static void main(String[] args) { File aFile = new File("utf8_test.text"); try { String str = ""; char[] ch = new char[]; BufferedReader in = new BufferedReader( new InputStreamReader(new FileInputStream(aFile), "UTF8")); while ( in.read(ch) != -1 ) { System.out.print(ch); } } catch (UnsupportedEncodingException e) { } catch (IOException e) { }

1/27/2010 8:56:45 AM 13 moonhkt <moon...@gmail.com>
How to get an include-path of jni.h that is able to be different on different platforms.

Hi, Now, I am trying to get an include-path of jni.h file to use in my Makefile. However, there is some difficult thing for me because the absolute path of the header file is different according to platforms. in case of linux $JAVA_HOME/include/linux in case of macos $JAVA_HOME/Headers/ in case of solaris $JAVA_HOME/include ...... all different.. So.... Is there any simple way to know an absolute path of the header file in Makefile? thanks...

1/27/2010 6:21:02 AM 2 junyoung <juneng...@gmail.com>
split UTF-8 string to multi UTF8-file

Hi All I have one utf-8, I want split input file into multi UTF-8. Can I using str.substring to extract string ? When input file have BOM code, how to remove the BOM code ? import java.nio.charset.Charset ; import java.io.*; import java.lang.String; public class read_utf { public static void main(String[] args) { File aFile = new File("input.txt"); File oFileDetail = new File("input_det.html"); File oFileHeader = new File("input_hdr.html"); File oFileSKU = new File("input_sku.html"); try { System.out.println("Header"); System.out.println("Detail"); System.out.pr

1/26/2010 2:13:45 PM 2 moonhkt <moon...@gmail.com>
ZipOutputStream

ZipOutputStream: if I put an uncompressed file named "mimetype" into the zip and the content of the file is "application/html+zip", there are 5 bytes between the filename and the content: 01 14 00 EB FF Normally (in Winzip), uncompressed content immediately follows the filename, shows WinZIP. What are those 5 bytes for and how can I do things the WinZIP way ? In other words, I want to get rid of those 5 bytes when building my ZIP file. Is there some setting for this in the class ?

1/25/2010 10:16:18 PM 14 Erik <e...@hotmail.com>
Using browser's proxy-settings from a javaws-app?

I've got an application running with javaws. The server is behind a socks proxy (which is configured in firefox, and the hosting website works fine). JavaWS (per ControlPanel) is configured to use the browser's proxy- settings and successfully downloads all the .jar-files mentioned in the jnlp-document. The application itself attempts to open a corba connection to the server (the same one that served the jnlp and the jar files), but for some reasons it does not use the proxy-settings, but instead tries to reach the server directly and fails. The application code seems to us

1/25/2010 8:25:44 PM 0 Andreas Leitgeb <...@gamma.logic.tuwien.ac.at>
Java 1.5_22 crash my server, please for help

Hi, I've got Java 1.5_22 with tomcat 6 on centos 32bit. After one day, two days of working in production, my server crash with the error: # # An unexpected error has been detected by HotSpot Virtual Machine: # # SIGSEGV (0xb) at pc=0xb7962d4f, pid=3307, tid=1355598736 # # Java VM: Java HotSpot(TM) Server VM (1.5.0_22-b03 mixed mode) # Problematic frame: # V [libjvm.so+0x402d4f] # # An error report file with more information is saved as hs_err_pid3307.log # # If you would like to submit a bug report, please visit: # http://java.sun.com/webapps/bugreport/crash.jsp #

1/25/2010 5:26:42 PM 16 Sherkan <grze...@gmail.com>

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