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  • How to build a java applet?

    - by Stefano Borini
    Most of the tutorials around explain how to create a java applet: create a .java file with a class, compile it with javac, put the .class somewhere, add a proper tag in the html. However, I'm not able to find anything about the best practices to build and release a complex applet, made of multiple classes and with additional libraries. How is the build/release process for this case ? What is it needed to go from my java project to the final .jar to put on the web ? I'm working with pure Eclipse, no plugins.

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  • Android and Protocol Buffers

    - by spaceboy2000
    I am writing an Android application that would both store data and communicate with a server using protocol buffers. However, the stock implementation of protocol buffers compiled with the LITE flag (in both the JAR library and the generated .java files) has an overhead of ~30 KB, where the program itself is only ~30 KB. In other words, protocol buffers doubled the program size. Searching online, I found a reference to an Android specific implementation. Unfortunately, there seems to be no documentation for it, and the code generated from the standard .proto file is incompatible with it. Has anyone used it? How do I generate code from a .proto file for this implementation? Are there any other lightweight alternatives?

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  • Error when running a GWTTestCase using maven gwt plugin

    - by adancu
    Hi, I've created a test which extends GWTTestCase but I'm getting this error: mvn integration-test gwt:test Running com.myproject.test.ui. GwtTestMyFirstTestCase Translatable source found in... [WARN] No source path entries; expect subsequent failures [ERROR] Unable to find type 'java.lang.Object' [ERROR] Hint: Check that your module inherits 'com.google.gwt.core.Core' either directly or indirectly (most often by inheriting module 'com.google.gwt.user.User') Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 2.1 sec <<< FAILURE! GwtTestMyFirstTestCase.java is in /src/test/java, while the GWT module is located in src/main/java. I assume this shouldn't be a problem. I've done everything required according to http://mojo.codehaus.org/gwt-maven-plugin/user-guide/testing.html and of course that my gwt module already has com.google.gwt.core.Core indirectly imported. http://maven.apache.org/maven-v4_0_0.xsd" 4.0.0 com.myproject main jar 0.0.1-SNAPSHOT Main Module <properties> <gwt.module>com.myproject.MainModule</gwt.module> </properties> <parent> <groupId>com.myproject</groupId> <artifactId>app</artifactId> <version>0.1.0-SNAPSHOT</version> </parent> <dependencies> <dependency> <groupId>com.myproject</groupId> <artifactId>app-commons</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> <dependency> <groupId>com.google.gwt</groupId> <artifactId>gwt-dev</artifactId> <version>${gwt.version}</version> <scope>provided</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-dependency-plugin</artifactId> <configuration> <outputFile>../app/src/main/webapp/WEB-INF/main.tree</outputFile> </configuration> </plugin> <plugin> <groupId>org.codehaus.mojo</groupId> <artifactId>gwt-maven-plugin</artifactId> <executions> <execution> <goals> <goal>test</goal> </goals> </execution> </executions> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-jar-plugin</artifactId> <configuration> <classesDirectory> ${project.build.directory}/${project.build.finalName}/${gwt.module} </classesDirectory> </configuration> </plugin> </plugins> </build> Here is the test case, located in /src/test/java/com/myproject/test/ui public class GwtTestMyFirstTestCase extends GWTTestCase { @Override public String getModuleName() { return "com.myproject.MainModule"; } public void testSomething() { } } Here is the gwt module I'm trying to test, located in src/main/java/com/myproject/MainModule.gwt.xml: <inherits name='com.myproject.Commons' /> <source path="site" /> <source path="com.myproject.test.ui" /> <set-property name="gwt.suppressNonStaticFinalFieldWarnings" value="true" /> <entry-point class='com.myproject.site.SiteModuleEntry' /> Can anyone give me a hint or two about what I'm doing wrong? Thanks in advance.

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  • Problems running Java SWT application. Is this something to do with 64 vs 32-bit libraries?

    - by ?????
    I'm getting started with SWT Exception in thread "main" java.lang.UnsatisfiedLinkError: no swt-cocoa-3557 or swt-cocoa in swt.library.path, java.library.path or the jar file at org.eclipse.swt.internal.Library.loadLibrary(Unknown Source) at org.eclipse.swt.internal.Library.loadLibrary(Unknown Source) at org.eclipse.swt.internal.C.<clinit>(Unknown Source) at org.eclipse.swt.internal.cocoa.NSThread.isMainThread(Unknown Source) at org.eclipse.swt.graphics.Device.<init>(Unknown Source) at org.eclipse.swt.widgets.Display.<init>(Unknown Source) at org.eclipse.swt.widgets.Display.<init>(Unknown Source) at org.eclipse.swt.widgets.Display.getDefault(Unknown Source) at com.astrobetty.getotagdesktop.MainUIWindow.main(MainUIWindow.java:110) I've carefully followed the directions here http://www.eclipse.org/swt/eclipse.php I can see libswt-awt-cocoa-3557.jnilib, libswt-cocoa-3557.jnilib, libswt-pi-cocoa-3557.jnilib clearly listed under "Referenced Libraries" in my Eclipse package explorer. Presumably, that should make them available on the classpath when I select the java module that contains "main" and do a "run as" application. What's the problem? I suspect it may be related to 64-bit vs 32-bit VMs....

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  • M2Eclipse and EAR projects on Weblogic

    - by Steve
    How can I import a maven EAR project into Eclipse 3.4, and be able to use the IDE (WTP) to deploy the ear successfully to Weblogic (9.2)? The main issue is that the dependent jars are not being included in the ear (under APP-INF/lib) when it gets deployed through the IDE. When I build from command line, the ear is exactly how I want it. I am using the APP-INF/lib configuration for the ear plugin, and have included the jarModule sections for all the required jars. When editing the eclipse EAR project's Java EE components, all the jars are listed, but not in the APP-INF/lib. Only when I open a dependent jar project do those specific jars get set under that subfolder. All the 3rd party jars are showing they will end up in the wrong place. If you need more info, just let me know. Thanks!

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  • Does throwing an exception in an EvalFunc pig UDF skip just that line, or stop completely?

    - by Daniel Huckstep
    I have a User Defined Function (UDF) written in Java to parse lines in a log file and return information back to pig, so it can do all the processing. It looks something like this: public abstract class Foo extends EvalFunc<Tuple> { public Foo() { super(); } public Tuple exec(Tuple input) throws IOException { try { // do stuff with input } catch (Exception e) { throw WrappedIOException.wrap("Error with line", e); } } } My question is: if it throws the IOException, will it stop completely, or will it return results for the rest of the lines that don't throw an exception? Example: I run this in pig REGISTER myjar.jar DEFINE Extractor com.namespace.Extractor(); logs = LOAD '$IN' USING TextLoader AS (line: chararray); events = FOREACH logs GENERATE FLATTEN(Extractor(line)); With this input: 1.5 7 "Valid Line" 1.3 gghyhtt Inv"alid line"" I throw an exceptioN!! 1.8 10 "Valid Line 2" Will it process the two lines and will 'logs' have 2 tuples, or will it just die in a fire?

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  • SVN Authentication and authorization

    - by vijay.shad
    Hi, I have created a multi module maven project. Now I have shared the project with a internal SVN repository. Now I want to give authorization to user based on the module user is owner of. So if a user does not have right to a project; he/she will not be able to checkout the project form svn repository. But he/she will get a source release(sources.jar file) form maven repository for that project; if wanted. What should i do go get this done? My svn reposiroty is created by TortoiseSVN 1.6.6.

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  • Java RS232 Comm on Vista-64 bit

    - by DD
    We have a Java application which needs to communicate with a peripheral device over Virtual Serial COM port. We use the RS232 Java COMM API (javax.comm.properties, comm.jar, win32com.dll) to achieve the same. Currently the code works fine on Windows XP 32-bit, Vista 32-bit and Windows 7. However we are having a problem trying to communicate on Vista 64-bit. I read from the Java forums that there is no 64-bit support for the Java COMM API I was wondering if anyone was facing a similar situation and were able to resolve the same in some way?

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  • What learning habits can you suggest?

    - by Asaf R
    Hi, Our profession often requires deep learning; sitting down and reading, and understanding. I'm currently undergoing an exam period, and I'm looking for ways to learn more effectively. I'm not asking about what to learn, or whether to prefer blogs over books, etc. My question is much more physical than that - What do you do when need to study, and I mean study hard? I'm looking for answers such as I slice my time to 2.5 hours intervals and make a break between them, but never during. I keep a jar of water nearby. I wake up at 6 o'clock sharp and start my day with a session at the gym. What good learning habits did acquire, or wish you had acquired? (I know this isn't strictly programming related, but it is programmers related)

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  • How do I get Java to use the serial port in Linux?

    - by Phillip Gibb
    We make use of a java application that manages a pinpad via the serial port. This works perfectly on windows with the Sun Comm.jar, the supplied dll and the properties file. Now we are attempting to use this solution on Linux (actually it does run on various other flavours of linux out in the field) - with Ubuntu server mode. After much attempts - blood, sweat and almost tears we have this scenario: Java version 1.4.2_17 Linux - Ubuntu Comm libs - Comm3 supplied by sun with the default driver specified An external comm test shows the comm ports: /dev/ttyS0 and /dev/ttyS1 But the java application says unable to open port /dev/ttyS1 (using the RXRT files produces invalid port errors) Has anyone been able to use java 1.4.2 on linux for serial port communication and found a solution that I could apply in my scenario? greatly appreciated Phill

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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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  • How do I setup a custom Gem.path using JRuby::Rack?

    - by Ben Hogan
    Hi Nick et al, I've been having some fun looking at to source code of JRuby-Rack and Rubygems to try to figure out how to solve a org.jruby.rack.RackInitializationException: no such file to load -- compass in my rackup script cased by require 'compass'. I'm passing in a custom 'gem.path' as a servlet init parameter and it is being correctly picked up by jruby-rack as far as I can tell by debugging in my rackup script: ENV['GEM_PATH'] => '/foo/lib/.jruby/gems' (expected) but rubygems seems to be broken: Gem.path => file:/foo/lib/jruby-complete-1.4.0.jar!/META-INF/jruby.home/lib/ruby/gems/1.8 I'm not sure why rubygems has not adjusted it's gem_path nor the LOAD_PATH, thus breaking require? Thanks again, I'm still a newbie at ruby, jruby, rack and sinatra. Any pointers in the right direction appreciated! Ben

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  • Eclipse -vm option trouble

    - by Taylor Leese
    I'm having trouble setting up a new eclipse installation with the -vm option. I'm using the eclipse.ini file below (which has worked in the past). I need this for the m2eclipse plugin. Currently, if I include the -vm option eclipse fails to start. Any idea what the problem is with this? -startup plugins/org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar --launcher.library plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.0.200.v20090519 -vm C:\Program Files\Java\jdk1.6.0_20\bin\javaw.exe -showsplash org.eclipse.platform --launcher.XXMaxPermSize 256m -vmargs -XX:PermSize=256m -XX:MaxPermSize=512m -Xms128m -Xmx1024m

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  • EJB3 lookup on websphere

    - by dcp
    I'm just starting to try to learn Websphere, and I have my ejb deployed, but I cannot look it up. Here's is what I have: public class RemoteEJBCount { public static Context ctx; private static String jndiNameStateless = "EJB3CounterSample/EJB3Beans.jar/StatelessCounterBean/com/ibm/websphere/ejb3sample/counter/RemoteCounter"; public static void main(String[] args) throws NamingException { RemoteCounter statelessCounter; Hashtable<String, Object> env = new Hashtable<String, Object>(); env.put(Context.PROVIDER_URL, "corbaloc:iiop:localhost:2809"); env.put(Context.INITIAL_CONTEXT_FACTORY, "com.ibm.websphere.naming.WsnInitialContextFactory"); ctx = new InitialContext(env); statelessCounter = (RemoteCounter)ctx.lookup(jndiNameStateless); } } Is there something I need to be doing differently to look up the EJB?

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  • How do I force Eclipse to rebuild if files in another project change (any change)?

    - by James Moore
    I've got an Eclipse (Galileo) project (called ProguardBuilder) that runs Proguard over a set of class files in other projects and produces a jar file. I'd like to have the ProguardBuilder project get rebuilt any time any class file in the other projects changes. AutoBuild doesn't do that; presumably it's smart enough to recognize and ignore any changes that don't affect anything externally visible. My problem is that I don't care whether or not the change is visible, since I need to completely rebuild ProguardBuilder any time the class files it depends on change at all. How do I tell Eclipse to do this sort of rebuild?

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  • Execution of "mvn sonar:sonar" with no external access

    - by romaintaz
    Hello, I try to execute the mvn sonar:sonar command on a machine where Maven is configured to have no access to external repositories (in reality, this is not exactly the case, but it helps me to explain my problem). So currently, if I run this command, I get the following error: [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] The plugin 'org.codehaus.mojo:sonar-maven-plugin' does not exist or no valid version could be found I think it means that I have some incorrect metadata in my local repository, as I have a [local repo]\org\codehaus\mojo\sonar-maven-plugin\1.0-beta-1 directory (with the JAR inside, of course). Have you any idea why my command is failing? tech infos: Maven 2.2.1, Java 1.6, Sonar 2.1.2

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  • Ivy deletion of unwanted (older) artifacts from Ivy cache

    - by John M
    I have a local Artifactory repository in which I have two jars for commons-logging: one for version 1.0.4 and one for version 1.1.1. I'm experimenting with using Ivy to download the older one with an ant task (with the proper dependency tag in ivy.xml), and then I change the "rev" attribute of this dependency tag to 1.1.1. When using ivy:resolve in ant, this newer jar gets successfully downloaded to my cache, but the older one is not deleted automatically, and I'd like to make this happen. I can't figure out how to do so after looking at the Ivy documentation; does anyone know how to get Ivy to delete old versions of artifacts when newer ones are downloaded, either with the resolve task or something else?

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  • Defining a SPI in Clojure

    - by Joe Holloway
    I'm looking for an idiomatic way(s) to define an interface in Clojure that can be implemented by an external "service provider". My application would locate and instantiate the service provider module at runtime and delegate certain responsibilities to it. Let's say, for example, that I'm implementing a RPC mechanism and I want to allow a custom middleware to be injected at configuration time. This middleware could pre-process the message, discard messages, wrap the message handler with logging, etc. I know several ways to do this if I fall back to Java reflection, but feel that implementing it in Clojure would help my understanding. (Note, I'm using SPI in a general sense here, not specifically referring to the way it's defined in the JAR file specification) Thanks

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  • Delphi-5 single-file storage solution?

    - by pastacool
    Hi! Is there a Delphi-5 solution to easily integrate single-file storage into existing code? I would like to have files like Java *.jar or Openoffice document files which are zipped/compressed files and folders but with their own file extension. Edit: I know some ZIP capable components but in a nutshell I want to access files within the "container" and use normal file handling routines on them (eg. TStringList.SaveToFile). Any overhead about compress/uncompress should be handled by the component.

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  • Use of serialization in JMX calls on Websphere Appserver to avoid ClasscastException

    - by hstoerr
    We are using JMX for communication between different EARs on the same Websphere application server (6.1). All works well if we only use Java types as arguments, but if we use or own the problem is that we get ClassCastExceptions on the receiver side. This is obviously a classloader problem: if the jar with the argument types is put into the JRE endorsed directory, such that all classloaders use exactly the same class, the Exception disappear. But we would much prefer to put the library that defines the argument types in the EAR itself. Now my question: is there a trick to persuade WAS to serialize and deserialize the arguments during the JMX call? I guess in this case the ClassCastException would dissappear.

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  • Using Proguard for Android in Eclipse Problem

    - by Chris
    I have taken a fresh install of Eclipse and all the latest Android tools and want to use Proguard on existing project, but for now I have created a new blank one. I have added a proguard.cfg file to my project added proguard.config=proguard.cfg to my default.properties Now when I try to export I get the following error [2010-12-12 10:36:35 - ApplicationTest] Proguard returned with error code 1. See console [2010-12-12 10:36:35 - ApplicationTest] 'C:\Program' is not recognized as an internal or external command, [2010-12-12 10:36:35 - ApplicationTest] operable program or batch file. [2010-12-12 10:36:35 - ApplicationTest] '-jar' is not recognized as an internal or external command, [2010-12-12 10:36:35 - ApplicationTest] operable program or batch file. I know it means there is a filepath setup incorrectly, question is where the heck is as I have looked through the general properties and project properties and can't see any reference to proguard or obfuscation so am stuck on what to change Any help appreciated.

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  • Creating a web-service client directly from the source

    - by ben
    Hi, I am trying to generate the WS client jar directly from the @Webservice class(es). Let's take this example : package com.example.maven.jaxws.helloservice; import javax.jws.WebService; @WebService public class Hello { public String sayHello(String param) { ; return "Hello " + param; } } I can generate a war file and use glassfish to serve this webservice, and from there I can use the glassfish WSDL URL to generate the client sources. What I am trying to do is to skip the glassfish part. From my maven project defining the webservice, I would like to use the jaxws-maven-plugin to create the client classes but I cannot find any way to specify the actual URL of the webservice. It should be possible right? @see also http://stackoverflow.com/questions/2097789/creating-a-web-service-client-with-a-known-but-inaccessible-wsdl

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  • Can I use XText for a DSL involving an XML file type?

    - by Chris
    I have defined a small DSL that is mostly written in the form of different types of XML files in conjuction with some property files. This works very well but I wish to create an Eclipse Editor to make editing these files easier for beginners (I already have a working parser). The main XML file can reference some items from the .properties files and vice-versa. THe main xml file can also reference other XML files. Certain options should only be available in the main xml file based on the contents of the .properties files and based on some osgi plugins that can be added to the DSL project (the syntax is dynamic depending on context). The structure of the language is fixed but the options available in each attribute or the choice of attributes themselves changes depending on metadata contained in plugin .jar files. Questions: Does XText support dynamic syntax (validation changes depending on external factors)? Does XText support XML files / .properties files? Thank you very much for your help in advance.

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  • using Swing components in javafx if they're not in the NetBeans javafx palette

    - by Jason S
    I'm just getting started with javafx in NetBeans, and I have it doing simple stuff (windows with buttons + the like) but would like to try something slightly more realistic. The "Swing/AWT Components" palette has a whole bunch of stuff that the "JavaFX Script Code Clips" palette does not (it has Button, CheckBox, ComboBox, ComboBoxItem, Label, RadioButton, Slider, TextField, and ToggleButton). How do I add stuff to this palette? I would like to try using some of the components in org-netbeans-swing-outline.jar edit: Aha. I was missing the point somewhat: there are only some javafx-wrapped Swing components available in javafx.ext.Swing.*, so if you want one of the other Swing components you have to wrap them yourself.

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  • How to zoom in google map (J2ME)

    - by Nivek
    Hi all, I am trying to develop a J2ME application that could retrieve the google map by passing in the GPS coordinates. From http://wiki.forum.nokia.com/index.php/Google_Maps_API_in_Java_ME, it provides the Utility method for map scrolling. Basically it states that i need to include MicroFloat library in my project. Here's what i did (Not sure if i am doing it right) Create a project, build the code. Add the jar file into my current project lib. but i am still getting error from codes. Example double LToY(double y) { return Math.round( offset - radius * Double.longBitsToDouble(MicroDouble.log( Double.doubleToLongBits( (1 + Math.sin(Math.toRadians(y))) / (1 - Math.sin(Math.toRadians(y))) ) )) / 2); } Am i missing any import statment??? Btw i am using netbeans 6.5. Thanks for any guidance... Kevin

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