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• Change Cursor for Netbeans on Linux

  - by Daziplqa

  Hi, I am recently have been successfully installed NetBean 6.8 on Ubuntu Box (10.04). But the problem is, NetBeans doesn't use the Gnome mouse Cursor by default. instead, It uses some freak mouse cursor that I hate! So, do you have any idea about how to change the cursor that appears inside netbeans.(I have looked inside tools options but without any output) Also I have did: $ grep -iR cursor * Binary file var/cache/all-resources.dat matches Binary file var/cache/all-layers.dat matches Binary file var/cache/index/s2/javascript/8/1/_0.cfs matches (note, I didn't talked here about how to change the cursor inside some Java program written in NetBeans) Thanks in advance.

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• How to add an Interbase connection pool to glassfish?

  - by kgrad

  Hi, I am attempting to add an Interbase connection pool to GlassFish v3 to use EJB 3.1 in a project. The glassfish log appears to be connecting to my database properly, it spits out all my table names and indices. However, I get an error INFO: fetching database metadata SEVERE: could not complete schema update java.lang.NullPointerException at interbase.interclient.ResultSet.local_Close(Unknown Source) ... And when I ping the connection pool from within Glassfish I receive "Ping failed Exception - null". I have the following properties set with my connectionpool: resource type: javax.sql.DataSource Datasource Classname: interbase.interclient.DataSource portNumber: 3050 as well as my database info. I can't seem to find information elsewhere. This question is similar but did not receive an answer. thanks.

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• In Facebook: How to get User's list_ of_friends_ ID when User is offline[not Sign In].

  - by Vaibhav Bhalke

  Hi All In Facebook: How to get User's list_ of_friends_ ID when User is offline[not Sign In]. We are Integrating facebook application in our website.Our website development in Java's GWT[Googlw Web Toolkit] FrameWork. We are refering "Gwittit" sample codeWe open facebook account for our website and want to show all users[friends] photo conected to Website's FACEBOOK account when FB A/C is offline [not sign in]. We have used apiclient.getFriendList() in that we get list of all user id [with photo]connected to Our website's fb a/c.But Problem is that we have to sign in first and we don't want that Is there any way to solve this problem?

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• XML parsing with SAX | how to handle special characters?

  - by cedar715

  We have a JAVA application that pulls the data from SAP, parses it and renders to the users. The data is pulled using JCO connector. Recently we were thrown an exception: org.xml.sax.SAXParseException: Character reference "&#00" is an invalid XML character. So, we are planning to write a new level of indirection where ALL special/illegal characters are replaced BEFORE parsing the XML. My questions here are : 1. Is there any existing(open source) utility that does this job of replacing illegal characters in XML? 2. Or if I had to write such utility, how should i handle them? 3. Why is the above exception thrown? Thank You.

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• Android: howto parse URL String with spaces to URI object?

  - by Mannaz

  I have a string representing an URL containing spaces and want to convert it to an URI object. If is simple try to do String myString = "http://myhost.com/media/mp3s/9/Agenda of swine - 13. Persecution Ascension_ leave nothing standing.mp3"; URI myUri = new URI(myString); it gives me java.net.URISyntaxException: Illegal character in path at index X where index X is the position of the first space in the URL string. How can i parse myStringinto a URI object?

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• Metaprograming - self explanatory code - tutorials, articles, books

  - by elena

  Hello everybody, I am looking into improving my programming skils (actually I try to do my best to suck less each year, as our Jeff Atwood put it), so I was thinking into reading stuff about metaprogramming and self explanatory code. I am looking for something like an idiot's guide to this (free books for download, online resources). Also I want more than your average wiki page and also something language agnostic or preferably with Java examples. Do you know of such resources that will allow to efficiently put all of it into prectice (I know experience has a lot to say in all of this but i kind of want to build experience avoiding the flow bad decitions - experience - good decitions)? Thank you!

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• Throwing an exception while handling an exception

  - by FredOverflow

  If a destructor throws in C++ during stack unwinding caused by an exception, the program terminates. (That's why destructors should never throw in C++.) If a finally block is entered in Java because of an exception in the corresponding try block and that finally block throws another exception, the first exception is silently swallowed. This question crossed my mind: Could a programming language handle multiple exceptions being thrown at the same time? Would that be useful? Have you ever missed that ability? Is there a language that already supports this? Is there any experience with such an approach? Any thoughts?

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• How to parse org.w3c.dom.Element RPX XML response

  - by Kenshin

  I am using rpxnow in Java, how do I use org.w3c.dom API to get the field identifier in this XML reponse for example? <?xml version='1.0' encoding='UTF-8'?> <rsp stat='ok'> <profile> <displayName> brian </displayName> <identifier> http://brian.myopenid.com/ </identifier> <preferredUsername> brian </preferredUsername> <providerName> Other </providerName> <url> http://brian.myopenid.com/ </url> </profile> </rsp>

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• Hibernate vs JPA vs JDO - pros and cons of each?

  - by matt b

  I'm familiar with ORM as a concept, and I've even used nHibernate several years ago for a .NET project; however, I haven't kept up with the topic of ORM in Java and haven't had a chance to use any of these tools. But, now I may have the chance to begin to use some ORM tools for one of our applications, in an attempt to move away from a series of legacy web services. I'm having a hard time telling the difference betweeen the JPA spec, what you get with the Hibernate library itself, and what JDO has to offer. So, I understand that this question is a bit open-ended, but I was hoping to get some opinions on: What are the pros and cons of each? Which would you suggest for a new project? Are there certain conditions when it would make sense to use one framework vs the other?

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• Jmeter Exception response code :000 ,response message:Read timed out,for Java Web service?

  - by vipin k.

  I am testing a java web service(jax-ws),but whenever i am running the test i am getting response code as response message:Read timed out . And at tomcat serevr side i am getting exception : SEVERE: caught throwable ClientAbortException: java.net.SocketException: Connection reset by peer: socket write error at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:358) at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:354) at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:381) at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:370) at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:89) I found out that Read timed out exception may occur because of big size of SOAP response. But i am clue less because same web service i can access form an application.

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• Jython project in Eclipse can't find the Jython library, but works in an identical project

  - by Rob Lourens

  I have two projects in Eclipse with Java and Python code, using Jython. Also I'm using PyDev. One project can import and use the xml module just fine, and the other gives the error ImportError: No module named xml. As far as I can tell, all the project properties are set identically. The working project was created from scratch and the other comes from code checked out of an svn repository and put into a new project. What could be the difference?

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• Jruby embedded modules and classes.

  - by James Moore

  Hey, I have a ruby file as follows: module Example class Myclass def t_st "Hello World!" end end end now if this was just a class I would be able to use the following java code: ScriptEngine jruby = new ScriptEngineManager().getEngineByName("jruby"); jruby.eval(new BufferedReader(new FileReader("example.rb"))); Object example = jruby.eval("myclass.new"); However, this class rests inside a module. Calling the same code as above produces the error: Exception in thread "main" org.jruby.embed.EvalFailedException: uninitialized constant myclass In addition, calling: Object example = jruby.eval("Example"); The module returns no error. So one would assume this follows the format for Ruby. Object example = jruby.eval("Example::myclass.new"); Again however, I get the same error as before. Can anyone help? As there is little documentation on JRuby? Thanks

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• JRuby Slick CanvasGameContainer using too much heap memory

  - by Jwosty

  I'm using Java's Slick library (great, by the way) just fine from JRuby. To start a game, I use AppGameContainer which works completely fine and as expected, but if I try to use CanvasGameContainer instead (I want a resizable window and Slick uses an old version of LWJGL that doesn't support this directly) it throws this error: Fri Jun 01 10:22:07 MDT 2012 INFO:Slick Build #274 Error: Your application used more stack memory than the safety cap of 2048K. Specify -J-Xss####k to increase it (#### = cap size in KB). Specify -w for full StackOverflowError stack trace I've tried increasing the heap size until my computer can't allocate any more memory, but to no avail. The CanvasGameContainer uses an awt window to display, which is resizable. Any ideas on why this is happening and/or how to fix this?

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• In a distributed environment, how can I configure log4j to log to different files for each JVM insta

  - by Renan Mozone

  My application runs on IBM WebSphere 6.1 Network Deployment. The application have several JSP files and Java classes. Today each host have only one JVM instance but my intention is to start another instance on each host. How can I configure log4j to log to different files for each JVM instance in the same host? I thought of using variable substitution on log4j XML configuration file but it only works with system properties. So, it is safe and recommended to set a custom system property just to store the JVM name? Anyone knows another strategy to achieve this in a 'elegant' way?

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• Building big, immutable objects without using constructors having long parameter lists

  - by Malax

  Hi StackOverflow! I have some big (more than 3 fields) Objects which can and should be immutable. Every time I run into that case i tend to create constructor abominations with long parameter lists. It doesn't feel right, is hard to use and readability suffers. It is even worse if the fields are some sort of collection type like lists. A simple addSibling(S s) would ease the object creation so much but renders the object mutable. What do you guys use in such cases? I'm on Scala and Java, but i think the problem is language agnostic as long as the language is object oriented. Solutions I can think of: "Constructor abominations with long parameter lists" The Builder Pattern Thanks for your input!

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• setProperty must be overridden by all subclasses of SOAPMessage

  - by Pablo

  I'm trying to deploy some web services in a WAR application on JBoss 5.1.0. I have created the source files from an existing wsdl using JAX-WS tool wsgen. This created the Service files and @XmlType annotated clases that would act as request and response wrappers. This classes worked well on JBoss 4.2.3, but when moving to JBoss 5.1.0, I get this exception. java.lang.UnsupportedOperationException: setProperty must be overridden by all subclasses of SOAPMessage My configuration: Windows XP SP3 (but getting the same on Vista, as well as on Linux) Sun JDK 1.6.0_17 JBoss 5.1.0 GA for jdk6 Thanks in advance!

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• Displaying a pdf file located on a http server from mobile phone

  - by JCasso

  I have some pdf files located on a http server: Like: http://domain.com/files/file1.pdf http://domain.com/files/file1.pdf http://domain.com/files/file1.pdf I need to display these files on a mobile application using java me. I tried to display them by opening Google Docs Viewer with platformRequest. However it seems Google Docs Viewer uses ajax and many mobile browsers does not support it. Is there an alternative for "Google Docs Viewer" for mobile devices ? Or is there a better solution for this problem ?

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• Regex for splitting a german address into its parts

  - by Christian

  Good evening, I'm trying to splitting the parts of a german address string into its parts via Java. Does anyone know a regex or a library to do this? To split it like the following: Name der Straße 25a 88489 Teststadt to Name der Straße|25a|88489|Teststadt or Teststr. 3 88489 Beispielort (Großer Kreis) to Teststr.|3|88489|Beispielort (Großer Kreis) It would be perfect if the system / regex would still work if parts like the zip code or the city are missing. Is there any regex or library out there with which I could archive this? EDIT: Rule for german addresses: Street: Characters, numbers and spaces House no: Number and any characters (or space) until a series of numbers (zip) (at least in these examples) Zip: 5 digits Place or City: The rest maybe also with spaces, commas or braces

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• How to retrieve .properties?

  - by user1014523

  Im developing desktop java application using maven. I got a *.properties file that I need to retrive during execution (src/resources/application.properties). The only thing comes to my mind is to use: private Properties applicationProperties; applicationProperties.load(new BufferedInputStream(new FileInputStream("src/resources/application.properties"))); This would work if I run my application directly from IDE. I want to to keep outpout hierarchy clear, so I set maven to copy resources folder dircetly to target folder (which is a basedir for the output application). This way application.properties file won't load (since I have target/resources/application.properties but not target/src/resources/application.properties). What is the best way to manage resources so they work both when I debug from IDE and run builded jar file directly?

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• Sort ArrayList of custom Objects by property

  - by Samuel

  Hello World!! :D I had a question which is pretty easy if you know the answer I guess. I read about sorting ArrayLists using a Comparator but somehow in all of the examples people used compareTo which according to some research is a method working on Strings... I wanted to sort an ArrayList of custom objects by one of their properties: a Date object (getStartDay()). Normally I compare them by item1.getStartDate().before(item2.getStartDate()) so I was wondering whether I could write something like: public class customComparator { public boolean compare(Object object1, Object object2) { return object1.getStartDate().before(object2.getStartDate()); } } public class randomName { ... Collections.sort(Database.arrayList, new customComparator); ... } I just started with Java so please forgive my ignorance :) Thanks in advance!! -Samuel

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• ORM in the realworld

  - by josh

  I am begining a new project that i think will last for some years. Am in the point of deciding the ORM framework to use (or whether to use one at all). Can anyone with experience tell me whether orm frameworks are used in realworld applications. The problem i have in mind is this: The orm tool will generate for me tables and columns etc as i create and modify my entities. However, after the project has gone live and is in production, certain database changes will not be possible. Can this hinder the advancement of the project. If i had used a framework like ibatis for example, i know i would only need to adjust the sql statements based on the database changes. Can someone tell me whether ORM tools have survived the live environment. At my office, we use java based ERP that was done long ago and it was never done using any ORM framework. Regards. Josh

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• Using Xalan in Eclipse plugin

  - by Leslie Norman

  I am facing problems in using xalan in eclipse plugin. When I try to create factory instance by: TransformerFactory tFactory = TransformerFactory.newInstance("org.apache.xalan.processor.TransformerFactoryImpl", null); I get error: javax.xml.transform.TransformerFactoryConfigurationError: Provider org.apache.xalan.processor.TransformerFactoryImpl not found ... I have following lib jars in plugin classpath: xml-apis.jar, xercesImpl.jar, serializer.jar, xalan.jar I even can't create class instance by: c = Class.forName("org.apache.xalan.processor.TransformerFactoryImpl"); Object o = c.newInstance(); It returns error: java.lang.ClassNotFoundException: org.apache.xalan.processor.TransformerFactoryImpl But if I run same code outside eclipse plugin with same libs on classpath, it works fine. Could Somebody give an idea if I am doing some mistake or how to reolve this issue?

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• Rhino: How to get all properties from ScriptableObject?

  - by Dyatlov Vitaly

  Hi guys. I am using a Javascript object as an object with configuration properties. E.g. I have this object in javascript: var myProps = {prop1: 'prop1', prop2: 'prop2', 'prop3': 'prop3'}; This object (NativeObject) is returned to me in Java function. E.g. public Static void jsStaticFunction_test(NativeObject obj) { //work with object here } I want to get all properties from object and build HashMap from it. Any help will be appreciated.

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• Retrieving WSDL file from secure service

  - by Anonimo

  I have a Web Service developed with JAX-WS. I have secured the web service with BASIC authentication configured in Tomcat. When I try to access the web service using a Java client, I first need to create the port, and then specify the credentials, as follows: CustomerServiceClient customerServiceClient = new CustomerServiceBottomUpService(); //1 CustomerService customer = customerServiceClient.getCustomerServicePort(); //2 Map<String, Object> context = ((BindingProvider) customer).getRequestContext(); //3 context.put(BindingProvider.USERNAME_PROPERTY, "kermit"); //4 context.put(BindingProvider.PASSWORD_PROPERTY, "thefrog"); //5 The problem I have is that, after line 1, I get an Authorization error (HTTP 401) as I obviously haven't provided the server with the credentials yet. I am creating the client artifacts from a server WSDL, hence the authentication problem when creating the service, and don't want my clients to store the WSDL locally as it's just annoying for them. How can I get around this problem?

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• How do I get google guice to inject a custom logger, say a commons-logging or log4j logger

  - by Miguel Silva

  Google guice has a built-in logger binding (http://code.google.com/p/google-guice/wiki/BuiltInBindings). But what if I want to use a commons-logging or log4j logger? Can I get guice to inject a Log created by LogFactory.getLog(CLASS.class) But having the same behavior as in built-in binding: The binding automatically sets the logger's name to the name of the class into which the Logger is being injected.. Does it even makes sense? Or shout I simply use the built-in java Logger? Or just use commons-logging without injections?

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