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comp.lang.java.programmer Post New
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Subject Posted Replies From
comp.lang.programmer

http://123maza.com/25/flight472/

9/3/2010 10:50:51 AM 0 ponraj niz <nizpon...@gmail.com>
proxy site let's go

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9/3/2010 5:12:08 AM 0 koko koko <oro7...@gmail.com>
Out of memory problem

We have some java applications deployed on tomcat. From time to time the whole system freezes up. It seems that there is not enough space for JVM. The maximum is set to 896MB. Instead of just increasing the size I'd like to know whats causing the problem. I'm trying to use "-XX:-PrintClassHistogram" parameter but the log file is not generated. I put this to tomcat5 config file: JAVA_OPTS="-Xms512m -Xmx896m -XX:MaxPermSize=256m -XX:HeapDumpPath=/tmp/java_pid<pid>.hprof -XX:-HeapDumpOnOutOfMemoryError -XX:-PrintClassHistogram" I tried stoping the tomcat afterwords or

9/2/2010 2:45:19 PM 7 John Smith <jsm...@yahoo.com>
help me

(2^n)+1 where n is 3digit num from 100 to 999. and result is prome or not???

9/2/2010 2:24:46 PM 1 pandian rv <pandian.cse...@gmail.com>
New Website : www.ChaturEngineer.com

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9/1/2010 11:48:53 AM 0 "ChaturEngineer.com" <chaturengine...@gmail.com>
My JVM is closed as soon as I close my Applet

Hi All, I have two applets on a page. One applet starts a frame. When I close this frame (JFrame) I call System.exit). Now this cause my JVM to exit. It causes my other applet also gets destroyed, Can you please let me know the solution for this. (I do not wish to remote system.exit call, this will cause me major re-work) Can we not load two JVMs for two applets in a browser ? Thanks Anup

9/1/2010 11:23:58 AM 4 Matrixinline <anup.kata...@gmail.com>
define a set of constant

Hi I would like to define a set of constants and these constant will be used as the input of the method. public Interface MesgConst { public final static String str1="This is string 1"; public final static String str2="This is string 2"; } The following is the method public void method(MesgConst _val) { } The usage of the constant, obj.method(MesgConst.str1) The point for doing this is to limit the options for the user to input when calling the method. It is very similiar to HasHorizontalAlignment and HasHorizontalAlignment.HorizontalAlignment, but I dont und

8/31/2010 5:03:56 PM 6 "a" <...@mail.com>
Problem with calendar

i have a problem with calendar, and throws a exception called java.lang.IllegalArgumentException: MONTH Im getting the actual date and the two passed months with calendar Does anybody know what it means that??

8/31/2010 4:07:12 PM 3 Erwin <erwinci...@gmail.com>
Firewall for Java?

Hi guys, is there a possibility for firewalls to control the traffic of different java applications? I mean, some Java Applications are even meant to run as a system service in the background - quite a reason to worry about! As far as I know, the rules of common firewalls are based on the java virtual machine executable. So is there a possibility to handle different instances of a java virtual machine or - the much better solution - identify the running java application within the java vm to assign a java application based firewall rule? Ina consistent way, of course... Tha

8/31/2010 12:07:34 PM 2 "Siebert Kunze" <Siebert.Ku...@web.de>
query

how do we convert an ArrayList into a hashMap ??

8/30/2010 11:10:27 AM 10 parag mohite <parag.mohit...@gmail.com>
*Get $5000 Simple hack to your Paypal account

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8/30/2010 10:21:30 AM 0 paypal cash <kotyada.satya...@gmail.com>
Fueling your car with natural gas from home

Dear Everyone, as you know the price of the Oil is more and more increasing, while the oil supply is decreasing. Moreover Oil is causing wars, terror, oil spills, a lot of greenhouse gases. Do you know that there is plenty of natural gas ? The supply will last for many decades, probably for hundred years. A lot of methane (natural gas) is found as shale gas, a lot more will come from methane hidrates. Natural gas is causing much less greenhouse gases and since it is found locally, it will not cause any wars or terror. It will create jobs in your own country and not in the middle east

8/30/2010 12:02:58 AM 0 ".." <sustainable.future...@gmail.com>
reg expression example...

Hi All, I need to process large text file and I'm using this expression. All I know that these words are coming in this order. "word1.*word2(.*)word3.*word4.*word5" How can I optimize it ? thanks.

8/29/2010 10:32:18 PM 7 john <j...@mytrashmail.com>
Energy Saving Tips

1. Reduce heater's room temperature For each extra degree (Celsius) of temperature, your heater will consume 7 to 11% more energy. Adjust it to 18degrees which is also better for your health. 2. Install a programmable thermostat You will be able to control the heater's temperature during specific hours every day. 3. Insulate your house Loss of heat is loss of energy. 4. Fix air leaks 5. Close the chimney of the fireplace when you don't use it It is designed to drive smoke (hot air) out of the house! 6. Get an energy audit to advice you about the necessary fixes and insulation 7.

8/29/2010 10:37:47 AM 0 ".." <sustainable.future...@gmail.com>
Program for displaying movies, pictures...

I would like to write standlone program for displaying movies (different formats), pictures (jpg, png, etc. ) and htmls. Could you help me to choose: - technology (C++, .Net, Java) - external applications - libraries which will cooperate very well. Basic requirements: - content displaying according to xml playlist - program has to work under system Windows XP - reliability (high as it is possible) May somebody saw such ready made program in network? Thanks in advance. Bartek

8/28/2010 3:45:08 PM 0 "news.onet.pl" <bartosz.jurc...@gmail.com>
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8/28/2010 3:03:51 PM 0 love me <2011.love....@gmail.com>
Simple hack to get $5000 to your *Paypal account

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8/28/2010 11:23:10 AM 0 Hot Hot Hot <m.appalako...@gmail.com>
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8/28/2010 11:15:35 AM 0 ur best <urrankinl...@gmail.com>
=?UTF-8?B?2LHZhdi22KfZhiDYr9ixINmF2LHYsiDYqNmG2K/ZiiDYqNinINi02LHZgyDZiNmE2KfZig==?= =?UTF-8?B?2Kog2YHZgtmK2Ycg2YXYqNin2LHZgyDZhdmK2LTZiNiv?=

2LHZhdi22KfZhiDYr9ixINmF2LHYsiDYqNmG2K/ZiiDYqNinINi02LHZgyDZiNmE2KfZitiqINmB 2YLZitmHINmF2KjYp9ix2YMg2YXZiti02YjYrwogICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAg2YXYs9i52YjYryDYsdis2YjZiiAtIDE52YXYsdiv2KfYryA4OQrZgtiz2YXYqiDYp9mI2YQK aHR0cDovL3d3dy55b3V0dWJlLmNvbS93YXRjaD92PUZxS05CVkJZOUQ4CtmC2LPZhdiqINiv2YjZ hQpodHRwOi8vd3d3LnlvdXR1YmUuY29tL3dhdGNoP3Y9VXNIZ3U3YndmRDAK2YLYs9mF2Kog2LPZ iNmFCmh0dHA6Ly93d3cueW91dHViZS5jb20vd2F0Y2g/dj1pTXU4UFg5OVhqVQoKCtii2LLZhdin 2YrYtCDYqNiy2LHaryDYr9ix2KfYtNix2YEg2YjYr9ix2LnYsdin2YIg2KjZitmGINmF2LHYr9mF INmI2YXZgtin2YjZhdiqINin2YrYsdin2YYg2KjYp9ix2pjZitmFIN

8/28/2010 9:55:14 AM 0 h hg <1235ir...@googlemail.com>
How to convert CSV row to Java object?

Hi, I'm using Java 1.6. Does anyone know of any library or other Java classes out there that would take a CSV row and convert them into a Java object that I've created? Thanks for any advice, - Dave

8/27/2010 4:47:14 PM 24 laredotornado <laredotorn...@zipmail.com>
* Simple hack to get $5000 to your Paypal account

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8/26/2010 4:35:40 PM 0 Brazil Acctressess <paidi.shivakris...@gmail.com>
Using JNLP filecontents

I'm designing some software to live within the restrictions of the JNLP sandbox. I understand how to use the various interfaces to create an open file dialog, read the contents, create a save file dialog, and write the contents -- the stuff corresponding to conventional Open and Save As menu items. Now I'm trying to figure out how to do a "Reopen" dialog -- discard the current internal data and reread the document from scratch. Is there anyone who has used these facilities enough to be able to answer the following more detailed version of my question? The FileOpenService

8/26/2010 3:33:20 PM 2 David Lamb <dal...@cs.queensu.ca>
ftp ssl cert

I need to write a ftp/ssl program (done actually) but I need to secure it, and I was provided 2 files from the destination (keycert.txt & trusted.txt). The keycert.txt has the following in it: -----BEGIN ENCRYPTED PRIVATE KEY----- MII ...snip... -----END ENCRYPTED PRIVATE KEY----- -----BEGIN CERTIFICATE----- MII ...snip... -----END CERTIFICATE----- The trusted.txt has the following in it: -----BEGIN CERTIFICATE----- MII ...snip... -----END CERTIFICATE-----= Notice the MII in the certificate/key areas. I suspect that it is RSA. I guess I'm supposed to import these into a ke

8/26/2010 3:10:00 PM 7 bcr666 <bcr...@gmail.com>
Reading lines of a Text File form the end

Suppose a text file is given.Each line is separated by next line char line 1 line 2 line 3 .. .. line n-1 line n I want to read the file from the end i.e. first read line n ,than line n-1 , so on up to some condition in a loop Please provide guidance. One more doubt : can we insert line 0 at the beginning of the file by using some inbuilt facility without doing manual shift of the line 1 to line n in forward??

8/25/2010 7:21:13 PM 11 Debajyoti Sarma <sarma.debajy...@gmail.com>
Call from native thread is not handled by context class loader

Hello. I have scenario like this: Call from JAVA->c++ >JAVA When I call JAVA defined oeprations (kind of call back) from C++ app(called by java) immediately after receiving the call from JAVA, it works fine. C++ call from JAVA initiates a chain/ stack of subsequent calls (which may spawn a new process/ thread), and finally a call is again made from last spwned process/ thread to JAVA. When we call findClass on env. after attaching current thread to JVM, env is not able to find the class. As per my understanding this is probably because when we call from native thread to JAVA,

8/24/2010 4:29:06 PM 0 "lavanya.m...@gmail.com" <lavanya.m...@gmail.com>
Useful multithreaded tool for Java

All, I am happy to announce that MulticoreSDK v2.3.3 is released in alphaworks. MulticoreSDK toolkit includes various valuable features, such as data race detection, deadlock detection, unit test framework for parallel programs, lock profiling tool, etc. These tools are provably useful to test, debug and analyze applications targeted for multicore hardware systems. Release Highlight: -- Unified Java lock contention profiler, capable of handling j.u.c lock and Java lock monitor. -- Unified installation package for all command-line tools. -- All command-line tools support Windo

8/24/2010 12:15:56 PM 0 lolo <fsl...@gmail.com>
creating identical zip archives with java and zip tools

Hi, a simple problem: we have JavaEE based server that accepts ZIP files, and a JavaEE based client that creates and uploads them. We verify that the ZIP file is identical at client and server by MD5. I'd like to write a client with some other language.. in fact even a shell/wget script would do. But here's the problem: if I create a ZIP archive with java.util.zip, it is not the identical to an archive created by command line tools. Here's a simple example: cat hello.txt hello zip hello1.zip hello.txt java makezip [creates hello2.zip, code below] ls -l hello1.zip hello2.zip

8/24/2010 10:25:20 AM 6 "m.niinimaki" <manzi...@gmail.com>
hibernate query question ?

I have two entities like this public class FirstEntity{ private SecondEntity second; ..... } public class SecondEntity{ private String name; }, and on web I have a bean that looks like ; public class Bean{ private FirstEntity first; } and I do a select like "select first from FirstEntity first left join fetch first.second", and i set the result to a bean on the web. Jspx part has inputText ="#{bean.first.second.name}". My problem is what when FK to second entity is null(what can be the case), than jspx breaks. Is there any way to check if query do

8/24/2010 8:22:10 AM 2 mike <m...@mail.com>
Any Java books aimed at the Android platform?

(or Android books aimed at the Java illiterate?) Hello there, I need some suggestions on a good book about Java programming on the Android platform. All books I have seen on various shops fall into two categories: 1- Java generic books that will teach everything about the language, typically in a PC/Web environment. 2- Android books that will assume you're a fluent Java programmer. The former category isn't for me. Ok, let's just say I'm one of those Java haters who would use it under Android only because he's forced to (no flames please, they would go to /dev/null anyway). T

8/23/2010 6:14:11 PM 6 asdf <a...@nospam.com>
Using a Veloctity template in a custom Maven report

Hi, I am trying to write a report plugin for Maven which will run during the 'site' stage in the lifecycle. The plugin needs to be able to use a Velocity template to create a HTML file. I have created a Mojo which extends AbstractMavenReport and within that I have /** * @component */ private VelocityComponent velocityComponent; so that I can get hold of the Plexus velocity component. I am currently passing this into a method and using this as: public void createReport(VelocityComponent velocityComponent) throws Exception { VelocityContext conte

8/23/2010 9:10:45 AM 0 Jacqui <jasn...@ntlworld.com>
ODE bindings for java

Hi, I transfered a small subset of the ODE (Open Dynamics Engine) functions to java. It should be easy to extend. When my applet is finished, I will publish it as an example for these bindings. http://tokis-edv- service.de/index.php?option=com_content&view=article&id=68%3Aode-bindings- for-java&catid=44%3Aspiele&Itemid=84&lang=en Best Regards Thorsten

8/22/2010 5:42:22 PM 2 Thorsten Kiefer <t.kie...@tokis-edv-service.de>
File and location paths for jstl.jar

I'm looking for a guide or FAQ for taglibs in Tomcat 6 including which jar files for the standard files and which versions I need, specifically where to put them. Again, I am using Tomcat 6. <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> I asked before on JavaRanch: <http://www.coderanch.com/t/498861/Ranch-Office/FAQ-Setup-Jstl-Jsp#2247499> But as you can see, ah, well, best expressed by Paul Wheaton: | Hi. Nice to meet you. I am the censor king on this site. Freedom of | the press belongs to those that own one and all that. That's not of concern to me a

8/21/2010 8:34:21 PM 0 Garrett Smith <dhtmlkitc...@gmail.com>
netbeans and jmatter

I have a problem with Jmatter and Netbeans: how can I use Jmatter on Netbeans? I googled this but nobody has this problem.

8/21/2010 4:01:52 PM 1 Giuca <glc...@tiscali.it>
The Oracle/Google lawsuits, and how it affects choice of language

Oracle are suing Google over Google's use of Dalvik on Android; you can find the details here: http://www.groklaw.net/article.php?story=20100815110101756 The details, however, are not what's concerning me. What's concerning me is Oracle's apparent willingness to sue people operating in the Java space. Let's face it, if Oracle sues Google, Google can afford to fight; if Oracle sues you or me, regardless of the merits of the case, we fold. I'm at the point of starting work on a new generation of my main infrastructure layer, which supports all my products; I was going to use

8/20/2010 12:37:44 PM 50 Simon Brooke <stillyet+n...@googlemail.com>
JAX-WS and RuntimeException in service implementation

Hello, I am confused with regard to the treatment of runtime exceptions in a webservice call. Can anyone give an explanation (or point me to one) that is clearer and more complete than the JAX-WS spec itself? The scenario: Supppose I call a webservice in Java over a JAX-WS 2.1 compliant SOAP implementation and the service implementation throws a java.lang.RuntimeException. What happens on the service and the client side? What the spec has to say: The JAX-WS spec says in section 3.7 : java.lang.RuntimeException and java.rmi.RemoteException and their subcl

8/19/2010 7:44:07 AM 2 Sebastian Millies <s#PUNKT#mill...@ids#MINUS#scheer#KEIN-SPAM#.de>
Jar modification question

I need to be able to replace a default resource file with a site-specific one. Currently I'm doing the job with a bash script that builds the replacement resource file and then runs jar in update mode to put the new resource into the jarfile. This works and works well, but isn't particularly portable, so I looked into writing a Java utility, but the java.util.jar and/or java.util.zip packages don't seem to be able to replace files in an existing jar file. I've thought of a few other approaches using portable scripting tools: - Python: but not all machines have it installed -

8/18/2010 11:15:05 PM 8 Martin Gregorie <mar...@address-in-sig.invalid>
Command Pattern Question

Hello, I have a basic question about the command pattern. Let's assume there is a command AddItemCommand and another one RemoveItemCommand. The implementation of execute() in the AddItemCommand is basically the impl. of undo() in the RemoveItem command and vice versa. If this is the case. How can code duplication be avoided using the command pattern? Probably I missed something general with with command pattern. Thanks for your help. Peter

8/18/2010 10:15:21 PM 3 Peter Mueller <peter.o.muel...@gmx.de>
New open-source library for elegant parsing in Java

Hello Everybody, I would like to draw your attention to a (relatively) new open-source PEG parsing library available to Java developers: "parboiled" (http://parboiled.org). It let's you build parsers for arbitrary input texts with an internal Java DSL very elegantly and with much less overhead than "old-school" parser generators. Among other things it features: - reporting of syntax errors - error recovery enabling parsing of the complete input even in the presence of syntax errors - good parsing performance (currently parses about 50'000 lines of Java code (equal to 1.8 Mio. characters) per

8/18/2010 4:22:43 PM 0 Mathias <u...@compgroups.net/>
How is the search path for "log4j.properties" file?

Assume a java program declares and uses a log4j logger. How is the search path for the responsible log4j.properties file resp. how is the priority if multiple log4j.properties files exist? I can think of different levels: log4j.properties file in the directory where the calling *.class/*.jar is placed log4j.properties file in the directory where the log4j.jar is placed log4j.properties file in the directory where the java.exe is placed log4j.properties file in a special config directory (of the appserver) log4j.properties file in the directory on the PATH environment variable

8/18/2010 2:15:53 PM 0 l.alt...@buggy.org (Llyod Altman)
Eclipse missing wrong return type

Hi, We have the following method. private int getOurId(Object value, Transaction c) throws Exception { if (value == null) { return -1; } return ((MyInterface) value).getMyId(c); } And getMyId(c) returns an Integer object. We were expecting Eclipse to give a compilation error, since return type is int for method, and show the error in red within IDE. When running ant we get a compilation error. We fixed with intValue(). The only difference we have is that we use 1.4 for ant and 1.5 in Eclipse. Could that give such a difference?

8/18/2010 10:10:12 AM 2 mike <mikaelpetter...@hotmail.com>
Struts 2 with Weblogic 10

I'm trying to use Struts2 with Bea WebLogic10. I imported in Eclipse the example-application struts2- blank-2.0.14.war included in the struts2-2.0.14-all.zip downloaded by Apache site. The server starts correctly but when I try to enter by browser I have this: javax.servlet.ServletException: java.lang.NoClassDefFoundError: freemarker/template/Template (The freemarker.2.3.8.jar is in Web-Inf/lib) I don't know what can be... Do You have any ideas??? Thanks a lot Giulio

8/18/2010 8:42:54 AM 1 Francesco <f.pall...@gmail.com>
Does log.info(...) output go ALWAYS to all LOG4J RootLoggers?

Assume I defined in the log4j.properties file multiple RootLoggers: log4j.rootLogger=OUTX, MAIN, BACKUP2 Then, in the java code, I specify log.info(...); Does the log output from java go ALWAYS to ALL RootLoggers? Or can I somehow restrict it (IN JAVA Source !!) to only one of the RootLoggers? Gianni

8/18/2010 7:28:55 AM 0 g...@osgitest.org (Gianni Galore)
Java and Android

Does Java run on Android? I know that Android code contains a lot of Java code, but how easy is it to port Java apps that are already written to Android? Anyone done it? -- Dirk http://www.transcendence.me.uk/ - Transcendence UK http://www.blogtalkradio.com/onetribe - Occult Talk Show

8/17/2010 11:37:47 PM 2 Dirk Bruere at NeoPax <dirk.bru...@gmail.com>
jarsigner can't rename, ant keeps compiling

Hi, It turns out that the two issues that have confounded me recently are related. First, jarsigner could not rename abc.jar to abc.jar.orig. Second, I had a class that just kept compiling even if it wasn't changed. I finally looked at the content of that file and it turns out that the class was commented out except for the imports: import java.util.* /* Rest commented out */ When I deleted this file, both issues solved themselves. I'm happy that the issues are solved, but I would like to know why a "blank" file like this can cause those problems. Thank

8/17/2010 4:05:33 PM 3 Sam Takoy <sam.ta...@yahoo.com>
Bugzilla or other Project Management tool

Hi Everybody, I am looking for a project management tool. Mostly what I need to do is tie together requirements, test scripts for one-off type requests and then organize those requests into a hierarchy and then be able to generate reports, e.g. this is what we worked on last week, last month, last year, etc., here are the projects we had an impact on, and here are the individual tasks that we performed (it would also be nice to have things like a way to enter how much time each task took and a way to be able to press a button and get a requirements document or test script for a giv

8/17/2010 2:28:45 PM 1 grasp06110 <grasp06...@gmail.com>
Where (in web) locate java app using sockets?

Hi! I'm building java application (server & client) using sockets for my thesis. I want to locate my server on some host. First thing was Google AppEgine (big table, many ready classes), but it not allow to open sockets (only http and https to communication). Do you know some free or "free to start" places to host my app? I need exterior IP, possibility to open sockets and java JVM of course :)

8/17/2010 1:03:21 PM 3 Czterysta Czwarty <czterystaczwa...@gmail.com>
Code changes not reflecting on server

Hi I wonder why the code changes in my web app are not getting reflected on the server automatically. Is it that, I have to re-publish the application after making every small piece of change? I am using Eclipse and Weblogic 9.2 Please Advice. Thanks Sahil

8/17/2010 10:00:53 AM 2 Sahil Dave <sahil.dav...@gmail.com>
Develop a Simple Web Application

Hi, guys I am not new to Java but new to the java web application development. Now I wish I can make a simple web application for my team member's use, it just query some information from other sources (files). I am thinking about Java. Do you think what tool set I should go to learn and how quick I can finished the job? (If there is no web and just a console application, that will take me one or two days to get it done). Thanks in advance. -- Life is the only flaw in an otherwise perfect nonexistence -- Schopenhauer narke

8/17/2010 8:49:34 AM 1 narke <narkewo...@gmail.com>
ant keeps compiling

Hi, I have about 200 files in my source tree. I compile by ant: <target name="source" depends="init" description="compile the source " > <javac srcdir="${src}" destdir="${build}" debug="on" includeantruntime="false"> <classpath> <fileset dir="${home}/code/lib" includes="*.jar"/> <fileset dir="${home}/tomcat/lib" includes="*.jar"/> </classpath> <!-- <compilerarg line="-Xlint:unchecked"/> --> </javac> </target> Even if I do "ant" consecutively, I get source: [javac] Compiling 1 source file to C:\pg\code\bak\Pr

8/17/2010 7:09:53 AM 1 Sam Takoy <sam.ta...@yahoo.com>
How would you get rid of lagging zeros?

I need my code to convert a bunch of Strings (containing Double numbers) to a canonical form: "0.3750" should become "0.375" In essence, I need to remove any extra zeros on the right side. You may assume all the numbers have a period. TIA, -Ramon

8/16/2010 10:30:27 PM 10 Ramon F Herrera <ra...@conexus.net>

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