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• Eclipse: Double semi-colon on an import

  - by smp7d

  Using Eclipse, if I have an extra semicolon on an import line (not the last import line), I see a syntax error in the IDE. However, this compiles fine outside of the IDE (Maven in this case). Example: import java.util.ArrayList;; //notice extra semicolon import java.util.List; Does anyone else see this behavior? Why is this showing as a syntax error? I am working with someone who keeps pushing these this to source control and it is irritating me (they clearly aren't using Eclipse). Full disclosure... I am using SpringSource Tool Suite 2.8.0.

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• rewrite image URLs

  - by Don

  Hi, I'm writing a Maven plugin that merges CSS files together. So all the CSS files that match /foo/bar/*.css might get merged to /foo/merged.css. A concern is that in a file such as /foo/bar/baz.css there might be a property such as: background: url("images/pic.jpg") So when the file is merged into /foo/merged.css this will need to be changed to background: url("bar/images/pic.jpg") The recalculated URL obviously depends on 3 factors: original URL original CSS file location merged CSS file location Assuming that the original and merged CSS files are both on the same filesystem, is there a general formula (or Java library) that can be used to calculate the new url given these 3 inputs? Thanks, Don

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• If I already know Perl Is Python worth learning?

  - by Garett

  I'm all for learning and continual improving one’s self, and I believe you should have as many tools as possible in your toolbox. However, I was wondering if it was worth it learning Python, since I already know a couple of dynamic interpreted languages, including Perl. My background is mostly C/C++/Java/C#, but I’ve programmed in Perl quite a bit over the years. I recently read Dive Into Python, as well as the tutorial for the Django framework for a new project where Python was suggested. However, I kept finding myself thinking that I can still accomplish much of the same stuff with Perl, so I’m not sure when I would choose a Python approach over one that I’m already familiar with. This is by no means meant to start any kind of language war, and I do recognize that language choice is quite subjective. I just wondering when one would make such a choice.

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• JAXWS serves only 100 requests, how to configure JAXWS to change it to unlimited?

  - by cbz

  Hello, I'm using JAXWS for generating webservices and serving using EndPoint.publish() as well as deploying war file, but as soon as it has served 100 requests it wouldn't return 101st response. How to configure JAXWS to change this count to unlimited? EDIT: solution found, first of all it was not related to JAXWS and I'm sorry for posting it here, in my first impression I thought problem is with JAXWS but after deep exploring and debugging I found problem with my persistence layer (Hibernate) where max number of sessions allowed are 100 by default. Sorry again for making you guys to think which actually does not make sense.

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• NetBeans Platform Unit Test Library Dependencies

  - by Ben Hammond

  I am working on a Netbeans Platform RCP application. I use jmock in my unit tests and I have created a Library Wrapper Module to import the necessary libraries. The Module has an section named 'Libraries' and another section named 'Unit Test Libraries'. I hoped that I could add the JMock Library Wrapper to the 'Unit Test Libraries', however when I run the unit tests I get the error 'package org.jmock does not exist'. If I import the JMock Library Wrapper in to the main 'Libraries' element then it works, but this feels wrong. Maven allows me to specify unit-test only dependencies, and I assumed that NetBeans Platform did the same. Should this be possible? Am I doing something wrong? Should I resign myself to a run-time dependency on the unit-test libraries (ugh).

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• Compiling CSS to SWF server side Java, What is the best practice?

  - by DataSurfer

  My project allows users to create custom css for our flex app. In regards to compiling the CSS into SWFs on the server side: Should I use the flex2.compiler.css.Compiler class in mxmlc-3.5.0.12683.jar? Or Should I invoke mxmlc from Runtime.getRuntime().exec()? The css.Compiler class is not very well documented. Does anyone have any examples that use this? For the Runtime exec method, what is the best way to package mxmlc into the maven build so its available to the server at runtime?

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• EJB injection in Glassfish webapp

  - by g051051

  I've got an app that is trying to use @EJB annotation to inject remote references to EJBs in my ejb.jar file. I'm getting inconsistent results. In one case, I have a listener in web.xml that gets called and apparently has the EJB injected correctly, since I can see it connecting to the EJB and calling methods on it. In another class (a struts2 action) I get NPE when it tries to access the EJB reference. As far as I can tell, they're identical calls, in Java classes that live in the same .war file. As a work around, I added code in the constructor to lookup the EJBs by their global JNDI names, and it works fine. I just can't figure out why one @EJB works and not another.

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• I'm having a problem redeploying an applications using Drools and Tomcat 6

  - by FrankL

  I have a spring application that uses JBoss Drools 5. It works fine except for when I attempt to redeploy (i.e. hot deploy) the application after I make a change during development. It appears that tomcat keeps a lock on 2 drools jar files, drools-compiler-5.0.1.jar and drools-core-5.0.1.jar. Since they can't be deleted the new war file does not get deployed. If my application does not make any Drools logic calls, then the hot deploy works. Does anyone have any ideas?

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• Why can't I have static public fields in my managed beans?

  - by AlanObject

  I just started using the Netbeans 7.1 beta and it is calling out errors of a type which I have never seen before. Specifically: A managed bean with a public field should not declare any scope other than @Dependent. The fields it is complaining about are public static final. I can understand the restriction on non-static fields, but I can't think of a good reason this would not be allowed for a static field. Unfortunately I use a lot of them since I don't like having constants in my code. I note that even though I get the red dot in the margin in the editor, the maven-driven build still works and GlassFish still runs my application the way I would expect. So what is my denoument on this issue? Am I going to have to move my static fields elsewhere or is there another way of handling this?

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• Resharper: how to force introducing new private fields at the bottom of the class?

  - by Igor Brejc

  Resharper offers a very useful introduce and initialize field xxx action when you specify a new parameter in a constructor like: Constructor (int parameter) The only (minor) nuisance is that it puts the new field at the beginning of the class - and I'm a fan of putting private parts as far away as possible from the prying eyes of strangers ;). If, however, you already have some private fields in the class, Resharper will put the new field "correctly" (note the quotes, I don't want to start a flame war over this issue) next to those, even if they are at the end of the class. Is there a way to force Resharper to always put new fields at the end of the class? UPDATE: OK, I forgot to mention I know about the "Type Members Layout in Options" feature, but some concrete help on how to modify the template to achieve fields placement would be nice.

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• How can I make a workspace-folder level build script visible in the Eclipse Project Explorer?

  - by Chris

  I have a number of interdependent projects in an Eclipse workspace. Eclipse manages dependencies between them within the IDE but I'm starting work on a master build script that will sit in the folder about all the projects (the workspace folder). I haven't decided on if I will use Maven, Gradle or Ant/Ivy tet, but my question is, is there a way so that I can see a build script in the workspace folder in the Project/Package explorer? Currently it only shows me projects, but assuming I decide on an Ant build, I want to be able to see the main build.xml file in this window. I've played around with settings to no avail. Is it possible? If not, should I just set up an external run configuration instead?

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• Compilation hangs for a class with field double d = 2.2250738585072012e-308

  - by 01es

  I have come across an interesting situation. A coworker committed some changes, which would not compile on my machine neither from the IDE (Eclipse) nor from a command line (Maven). The problem manifested in the compilation process taking 100% CPU and only killing the process would help to stop it. After some analysis the cause of the problem was located and resolved. It turned out be a line "double d = 2.2250738585072012e-308" (without semicolon at the end) in one of the interfaces. The following snipped duplicates it. public class WeirdCompilationIssue { double d = 2.2250738585072012e-308 } Why would compiler hang? A language edge case?

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• C++ build systems

  - by flo

  I will start a new C++ project (it may have some C components as well) soon and I am looking for a modern, industrial-strength (i.e. non-beta) build system. The software will be created by several developers in 3-5 years and will run on Linux (Mac OS X and Windows might be supported later). I am looking for something that has better comprehensibility, ease-of-use and maintainability than e.g. make but is still powerful enough to handle a complex project. Open source software is preferred. I started looking into Boost.Build, CMake, Maven and SCons so far and liked features and concepts of all of those, but I'm lacking the experience to make a decision for a large project.

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• Best way to explain to someone that software developers need to install tools (mainly build integrat

  - by leeand00

  I work at a software company where most of the people are afraid to install new tools to increase productivity. They give me excuses like: I don't need to install something else. I can do this myself. etc...many other baseless arguments. In an ecommerece business, the end-users should not have to install anything, everything should be managed by them from the web, and the developers should be the ones installing things to increase productivity and teamwork i.e.: Version Control Systems Build Tools (ANT, NANT, Maven, continuous integration, CSS Frameworks) Integrated Development Environments Frameworks (Unit testing, etc) Etc... How else can I get my point across without sound crass?

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• frequent updates of a Tomcat application

  - by Erel Segal Halevi

  I have an application that runs on a Tomcat 7 server on a Windows machine. In its current stage, I have to frequently update and fix it. Whenever I need to update the application, I do all this: Build a new war file; Go to the Windows server, stop the Tomcat service; download the file, put it under webapps; Remove the old application folder under webapps; Remove the old application folder under work/Catalina/localhost (otherwise it keeps the old version cached). Restart the Tomcat service. I am sure there is a way to do all this automatically. What is it?

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• How can I get a project type on Netbeans Platform?

  - by Fabio

  Hi folks, Is there a way to know the type of a selected project? I would like to do some specific actions depending of the project type like a J2SE project. Below is the only way that I found to do that: public final class MyAction extends CookieAction { @Override public boolean isEnabled() { if(this.getActivatedNodes() == null || this.getActivatedNodes().length != 1) { return false; } Lookup lookup = this.getActivatedNodes()[0].getLookup(); // gets the selected project Project currentProject = lookup.lookup(Project.class); // checks if the selected project is a J2SE Project or a Maven Project if(currentProject != null && (currentProject.getClass().getSimpleName().equals("J2SEProject") || currentProject.getClass().getSimpleName().equals("NbMavenProjectImpl"))) { return true; } return false; }}

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• spring or jetty.xml?

  - by Justin

  I have a spring web application (currently packaged as a war file) which I would like to be able to launch from jetty in a stand-alone configuration (small scale all-in-one deployment, and for launching in the development environment). Since I am already using spring, it seems like what I want to do is create my jetty Server and WebContext objects, and initial JNDI context using spring. However this seems to overlap with the jetty.xml method of configuring the same environment. Is one approach better? Is the does jetty.xml offer anything easier than I can get using spring?

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• Understanding NoSQL Data Modeling - blog application

  - by Rushabh RajeshKumar Padalia

  I am creating an blogging application in Node.js + MongoDB Database. I have used relational Database like MySQL before but this is my first experience with NoSQL database. So I would like to conform my MongoDB data models before I move further. I have decided my blogDB to have 3 collections post_collection - stores information about that article comment_collection - store information about comments on articles user_info_collection - contains user inforamtion PostDB { _"id" : ObjectID(...), "author": "author_name", "Date": new Date(....), "tag" : ["politics" , "war"], "post_title": "My first Article", "post_content": "Big big article" "likes": 23 "access": "public" } CommentDB { "_id" : Objectid(...), "POST": "My First Article", "comment_by": "User_name", "comment": "MY comments" } UserInfoDB { "_id": ObjectID(...), "user": "User_name", "password": "My_password" } I would appreciate your comments.

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• Filter Empty Directories in Package Explorer View

  - by Matt

  Is there a way in eclipse to filter/hide empty directory trees in the package explorer view? This is different than filtering directories like '.svn' or maven's target, or filtering empty packages. It's more trying to clean up empty directories trees that show up as a result of filter rules. Context- We have a generic project in our workspace that uses filters to ignore non text based files(mp3s, jpgs, etc). It allows us to quickly edit our files in eclipse. The problem is because of the filters there are a lot of empty folders present. If eclipse can ignore any empty folders due to filters it would make the project cleaner.

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• using context resource in gwt 2 hosted mode

  - by rafael

  Hello all, I am moving a web app from gwt 1.5 to gwt 2.0. I am trying to connect to the a database resource I have in my context.xml file.In gwt 1.5 I had set up root.xml in tomcat-conf-gwt-localhost. I have no idea where to set up the resource in GWT 2.0. I tried placing my context.xml file in war-META-INF with no luck. Anyone have an idea where to place the context.xml file to be able to use a jndi database resource in GWT 2.0? Thanks in advanced

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• How to use SynonymFilterFactory in Solr?

  - by AlxVallejo

  I'm trying to execute synonym filtering at query time so that if I search for X, results for Y also show up. I go to where Solr is being run, edit the .txt file and add X, Y on a new line. This does not work. I check the schema and I see: <analyzer type="query"> <filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt" ignoreCase="true" expand="true" /> What am I missing? EDIT Assessing configuration files tomcat6/Catalina/localhost seems to point to the correct location <Context docBase="/data/solr/solr.war" debug="0" privileged="true" allowLinking="true" crossContext="true"> <Environment name="solr/home" type="java.lang.String" value="/data/solr" override="true" /> </Context> Also, in the Solr admin I see this. What does cwd mean? cwd=/usr/share/tomcat6 SolrHome=/data/solr/

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• ClassNotFoundException (HqlToken) when running in WebLogic

  - by dave

  I have a .war file for an application that normally runs fine in Jetty. I'm trying to port the application to run in WebLogic, but at startup I'm getting these exceptions: ERROR:Foo - Error in named query: findBar org.hibernate.QueryException: ClassNotFoundException: org.hibernate.hql.ast.HqlToken [from Bar] at org.hibernate.hql.ast.HqlLexer.panic(HqlLexer.java:80) at antlr.CharScanner.setTokenObjectClass(CharScanner.java:340) at org.hibernate.hql.ast.HqlLexer.setTokenObjectClass(HqlLexer.java:54) at antlr.CharScanner.<init>(CharScanner.java:51) at antlr.CharScanner.<init>(CharScanner.java:60) at org.hibernate.hql.antlr.HqlBaseLexer.<init>(HqlBaseLexer.java:56) at org.hibernate.hql.antlr.HqlBaseLexer.<init>(HqlBaseLexer.java:53) at org.hibernate.hql.antlr.HqlBaseLexer.<init>(HqlBaseLexer.java:50) ... What's the best way to fix this? I'm using Hibernate 3.3.1.GA and WebLogic 10.3.2.0.

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• Eclipse compiler with APT

  - by westcam

  What is the correct way to call the Eclipse compiler with an APT processor from Java? I am using the following Maven dependency for the compiler <dependency> <groupId>org.eclipse.jdt.core.compiler</groupId> <artifactId>ecj</artifactId> <version>3.5.1</version> </dependency> I want to test an APT processor with the Eclipse compiler in addition to Javac.

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• Mercurial - Files nog showing on server (ls command)

  - by Bumbolt

  I'm trying to setup a java buildserver with jenkins,maven and mercurial. Now my mercurial server is working i can push, pull and commit. Running the command 'hg serve' on the server allows me to see commits from my clients. But when i go manually into the repository (cd in server-terminal) and do an 'ls' command i can't see any file. When i clone the repository onto a new client i DO recieve the files pushed by the other clients. This is somewhat strange behaviour. Does anyone recognize this? What should i do to fix this?

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• Spring server start-up event

  - by jia

  i am facing a problem. I am using tomcat server for my spring maven project and i want to subscribe my application to facebook once when server starts up. I have tried ApplicationListener ContextRefreshedEvent. It gets invoked on application context initialization, but the issue is at that time my server has not completely started and hence my application is not publically accessible which is required in my case as facebook subscription requires verification using application public URL. So i want to do subscription when my server gets started completey and not on application context initialization. Any idea how can i do it? Do i have nay application level event listener that can tell me that server has started completely? Regards jia

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