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• "Unable to associated Elastic IP with cluster" in Eclipse Plugin Tutorial

  - by Jeffrey Chee

  Hi all, I am currently trying to evaluate AWS for my company and was trying to follow the tutorials on the web. http://developer.amazonwebservices.com/connect/entry.jspa?externalID=2241 However I get the below error during startup of the server instance: Unable to associated Elastic IP with cluster: Unable to detect that the Elastic IP was orrectly associated. java.lang.Exception: Unable to detect that the Elastic IP was correctly associated at com.amazonaws.ec2.cluster.Cluster.associateElasticIp(Cluster.java:802) at com.amazonaws.ec2.cluster.Cluster.start(Cluster.java:311) at com.amazonaws.eclipse.wtp.ElasticClusterBehavior.launch(ElasticClusterBehavior.java:611) at com.amazonaws.eclipse.wtp.Ec2LaunchConfigurationDelegate.launch(Ec2LaunchConfigurationDelegate.java:47) at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:853) at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:703) at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:696) at org.eclipse.wst.server.core.internal.Server.startImpl2(Server.java:3051) at org.eclipse.wst.server.core.internal.Server.startImpl(Server.java:3001) at org.eclipse.wst.server.core.internal.Server$StartJob.run(Server.java:300) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Then after a while, another error occur: Unable to publish server configuration files: Unable to copy remote file after trying 4 timeslocal file: 'XXXXXXXX/XXX.zip' Results from first attempt: Unexpected exception: java.net.ConnectException: Connection timed out: connect root cause: java.net.ConnectException: Connection timed out: connect at com.amazonaws.eclipse.ec2.RemoteCommandUtils.copyRemoteFile(RemoteCommandUtils.java:128) at com.amazonaws.eclipse.wtp.tomcat.Ec2TomcatServer.publishServerConfiguration(Ec2TomcatServer.java:172) at com.amazonaws.ec2.cluster.Cluster.publishServerConfiguration(Cluster.java:369) at com.amazonaws.eclipse.wtp.ElasticClusterBehavior.publishServer(ElasticClusterBehavior.java:538) at org.eclipse.wst.server.core.model.ServerBehaviourDelegate.publish(ServerBehaviourDelegate.java:866) at org.eclipse.wst.server.core.model.ServerBehaviourDelegate.publish(ServerBehaviourDelegate.java:708) at org.eclipse.wst.server.core.internal.Server.publishImpl(Server.java:2731) at org.eclipse.wst.server.core.internal.Server$PublishJob.run(Server.java:278) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Can anyone point me to what I'm doing wrong? I followed the tutorials and the video tutorials on youtube exactly. Best Regards ~Jeffrey

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• android throw InvocationTargetException,How to modify the error

  - by fonter

  ActivityManager am = (ActivityManager)this.getSystemService(this.ACTIVITY_SERVICE); try { clearMethod = am.getClass() .getMethod("clearApplicationUserData", String.class, IPackageDataObserver.class); } catch (Exception e) { Log.e("Error", "Android Error",e); clearMethod = null; } if(clearMethod!=null){ try { clearMethod.invoke(am,"com.android.browser",new ClearUserDataObserver()); } catch (Exception e) { Log.e("Error", "Android Exception",e); } } Exception 05-26 08:34:13.056: ERROR/Error(739): java.lang.reflect.InvocationTargetException 05-26 08:34:13.056: ERROR/Error(739): at android.app.ActivityManager.clearApplicationUserData(ActivityManager.java:475) 05-26 08:34:13.056: ERROR/Error(739): at java.lang.reflect.Method.invokeNative(Native Method) 05-26 08:34:13.056: ERROR/Error(739): at java.lang.reflect.Method.invoke(Method.java:521) 05-26 08:34:13.056: ERROR/Error(739): at com.iwidsets.clear.manager.AndClear.onCreate(AndClear.java:34) 05-26 08:34:13.056: ERROR/Error(739): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123) 05-26 08:34:13.056: ERROR/Error(739): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364) 05-26 08:34:13.056: ERROR/Error(739): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417) 05-26 08:34:13.056: ERROR/Error(739): at android.app.ActivityThread.access$2100(ActivityThread.java:116) 05-26 08:34:13.056: ERROR/Error(739): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 05-26 08:34:13.056: ERROR/Error(739): at android.os.Handler.dispatchMessage(Handler.java:99) 05-26 08:34:13.056: ERROR/Error(739): at android.os.Looper.loop(Looper.java:123) 05-26 08:34:13.056: ERROR/Error(739): at android.app.ActivityThread.main(ActivityThread.java:4203) 05-26 08:34:13.056: ERROR/Error(739): at java.lang.reflect.Method.invokeNative(Native Method) 05-26 08:34:13.056: ERROR/Error(739): at java.lang.reflect.Method.invoke(Method.java:521) 05-26 08:34:13.056: ERROR/Error(739): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 05-26 08:34:13.056: ERROR/Error(739): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 05-26 08:34:13.056: ERROR/Error(739): at dalvik.system.NativeStart.main(Native Method) 05-26 08:34:13.056: ERROR/Error(739): Caused by: java.lang.SecurityException: 739 does not have permission:android.permission.CLEAR_APP_USER_DATA to clear datafor process:com.android.browser 05-26 08:34:13.056: ERROR/Error(739): at android.os.Parcel.readException(Parcel.java:1218) 05-26 08:34:13.056: ERROR/Error(739): at android.os.Parcel.readException(Parcel.java:1206) 05-26 08:34:13.056: ERROR/Error(739): at android.app.ActivityManagerProxy.clearApplicationUserData(ActivityManagerNative.java:2016) 05-26 08:34:13.056: ERROR/Error(739): ... 17 more

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• Cannot Install JDK

  - by Vince

  For the life of me, I can't install the JDK on Windows Vista. I keep getting the error, "This Software Has Already Been Installed on Your Computer. Would you like to reinstall it?" Problem is, it's evidently not on my computer, since I can't a) run Eclipse - I get "Could Not Find Java SE Runtime Environment" or b) Find any reference to Java from the command line when typing java -version - I get "Error opening registry key 'Registry/JavaSoft/Java Runtime Environment." Any ideas?

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• NullPointerException when installing the Android SDK on Mac OS X

  - by Feanor

  I'm installing the Android SDK on Mac OS X. Following the instructions on the Android Development site, I've downloaded the SDK and modified my .bash_profile to include the path. The next step is to use the Android SDK and AVD Manager to actually download the platforms. However, when I use the Manager to install the platforms, I get the following error in the Terminal. I've looked around for similar problems in the Eclipse and Android forums and haven't found anything yet. Is something else damaged in the environment and needs to be repaired? Any recommendations on where I should look? java.lang.NullPointerException at org.eclipse.swt.graphics.Device.getFontList(Unknown Source) at org.eclipse.jface.resource.FontRegistry.filterData(FontRegistry.java:456) at org.eclipse.jface.resource.FontRegistry.createFont(FontRegistry.java:490) at org.eclipse.jface.resource.FontRegistry.defaultFontRecord(FontRegistry.java:551) at org.eclipse.jface.resource.FontRegistry.defaultFontData(FontRegistry.java:563) at org.eclipse.jface.resource.FontRegistry.getFontData(FontRegistry.java:579) at org.eclipse.jface.dialogs.Dialog.dialogFontIsDefault(Dialog.java:1077) at org.eclipse.jface.dialogs.Dialog.applyDialogFont(Dialog.java:998) at org.eclipse.jface.dialogs.Dialog.createContents(Dialog.java:756) at org.eclipse.jface.window.Window.create(Window.java:431) at org.eclipse.jface.dialogs.Dialog.create(Dialog.java:1089) at com.android.sdkuilib.internal.repository.UpdateChooserDialog.create(UpdateChooserDialog.java:280) at org.eclipse.jface.window.Window.open(Window.java:790) at com.android.sdkuilib.internal.repository.UpdaterData.updateOrInstallAll(UpdaterData.java:502) at com.android.sdkuilib.internal.repository.RemotePackagesPage.onInstallSelectedArchives(RemotePackagesPage.java:323) at com.android.sdkuilib.internal.repository.RemotePackagesPage.access$600(RemotePackagesPage.java:54) at com.android.sdkuilib.internal.repository.RemotePackagesPage$7.widgetSelected(RemotePackagesPage.java:168) at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source) at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Display.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Widget.notifyListeners(Unknown Source) at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source) at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source) at com.android.sdkuilib.internal.repository.UpdaterWindowImpl.open(UpdaterWindowImpl.java:104) at com.android.sdkuilib.repository.UpdaterWindow.open(UpdaterWindow.java:110) at com.android.sdkmanager.Main.showMainWindow(Main.java:281) at com.android.sdkmanager.Main.doAction(Main.java:247) at com.android.sdkmanager.Main.run(Main.java:92) at com.android.sdkmanager.Main.main(Main.java:81) logout

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• javax.management.ObjectName not found

  - by VANJ

  Oracle 11g on a RHEL Linux (Dell) box Linux *** 2.6.18-164.11.1.el5 #1 SMP Wed Jan 6 13:26:04 EST 2010 x86_64 x86_64 x86_64 GNU/Linux /opt/oracle/product/11.1.0/jdk/bin/java -version java version "1.5.0_11" Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_11-b03) Java HotSpot(TM) 64-Bit Server VM (build 1.5.0_11-b03, mixed mode) Where can I find the javax.management.ObjectName class? Thanks

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• How OpenStack Swift handles concurrent restful API request?

  - by Chen Xie

  I installed a swift service and was trying to know the capability of handling concurrent request. So I created massive amount of threads in Java, and sent it via the RestFUL API Not surprisingly, when the number of requests climb up, the program started to throw out exceptions. Caused by: java.net.ConnectException: Connection timed out: connect at java.net.DualStackPlainSocketImpl.connect0(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:69) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:157) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391) at java.net.Socket.connect(Socket.java:579) at java.net.Socket.connect(Socket.java:528) at sun.net.NetworkClient.doConnect(NetworkClient.java:180) at sun.net.www.http.HttpClient.openServer(HttpClient.java:378) at sun.net.www.http.HttpClient.openServer(HttpClient.java:473) at sun.net.www.http.HttpClient.(HttpClient.java:203) But can anyone tell me how that time outhappened? I am curious of how SWIFT handles those requests. Is that by queuing the requests and because there are too many requests in the queue and wait for too long time and it's just get kicked out from the queue? If this holds, does it mean that it's an asynchronized mechanism to handle requests? Thanks.

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• ExceptionInInitializerError and UnsatisfiedLinkError

  - by Nemesis

  I downloaded the Getac Z710 Android tablet RFID library/jar from there web site. But after I called the init function: 05-19 19:23:45.315: E/AndroidRuntime(2469): FATAL EXCEPTION: main 05-19 19:23:45.315: E/AndroidRuntime(2469): java.lang.ExceptionInInitializerError 05-19 19:23:45.315: E/AndroidRuntime(2469): at com.getac.lib.rfidreader.RfidTagReaderAPI.InitRFIDReader(RfidTagReaderAPI.java:118) 05-19 19:23:45.315: E/AndroidRuntime(2469): at shipadmin.musterstation.no.MainActivity.onCreate(MainActivity.java:104) 05-19 19:23:45.315: E/AndroidRuntime(2469): at android.app.Activity.performCreate(Activity.java:5008) 05-19 19:23:45.315: E/AndroidRuntime(2469): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079) 05-19 19:23:45.315: E/AndroidRuntime(2469): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023) 05-19 19:23:45.315: E/AndroidRuntime(2469): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084) 05-19 19:23:45.315: E/AndroidRuntime(2469): at android.app.ActivityThread.access$600(ActivityThread.java:130) 05-19 19:23:45.315: E/AndroidRuntime(2469): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195) 05-19 19:23:45.315: E/AndroidRuntime(2469): at android.os.Handler.dispatchMessage(Handler.java:99) 05-19 19:23:45.315: E/AndroidRuntime(2469): at android.os.Looper.loop(Looper.java:137) 05-19 19:23:45.315: E/AndroidRuntime(2469): at android.app.ActivityThread.main(ActivityThread.java:4745) 05-19 19:23:45.315: E/AndroidRuntime(2469): at java.lang.reflect.Method.invokeNative(Native Method) 05-19 19:23:45.315: E/AndroidRuntime(2469): at java.lang.reflect.Method.invoke(Method.java:511) 05-19 19:23:45.315: E/AndroidRuntime(2469): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 05-19 19:23:45.315: E/AndroidRuntime(2469): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 05-19 19:23:45.315: E/AndroidRuntime(2469): at dalvik.system.NativeStart.main(Native Method) 05-19 19:23:45.315: E/AndroidRuntime(2469): Caused by: java.lang.UnsatisfiedLinkError: Couldn't load serial_port: findLibrary returned null 05-19 19:23:45.315: E/AndroidRuntime(2469): at java.lang.Runtime.loadLibrary(Runtime.java:365) 05-19 19:23:45.315: E/AndroidRuntime(2469): at java.lang.System.loadLibrary(System.java:538) 05-19 19:23:45.315: E/AndroidRuntime(2469): at android_serialport_api.SerialPort.<clinit>(SerialPort.java:69) 05-19 19:23:45.315: E/AndroidRuntime(2469): ... 16 more I tried other solutions for this, but still no luck. What would be the problem? They only have a limited documentation and support. TIA.

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• Getting a NullPointerException at seemingly random intervals, not sure why

  - by Miles

  I'm running an example from a Kinect library for Processing (http://www.shiffman.net/2010/11/14/kinect-and-processing/) and sometimes get a NullPointerException pointing to this line: int rawDepth = depth[offset]; The depth array is created in this line: int[] depth = kinect.getRawDepth(); I'm not exactly sure what a NullPointerException is, and much googling hasn't really helped. It seems odd to me that the code compiles 70% of the time and returns the error unpredictably. Could the hardware itself be affecting it? Here's the whole example if it helps: // Daniel Shiffman // Kinect Point Cloud example // http://www.shiffman.net // https://github.com/shiffman/libfreenect/tree/master/wrappers/java/processing import org.openkinect.*; import org.openkinect.processing.*; // Kinect Library object Kinect kinect; float a = 0; // Size of kinect image int w = 640; int h = 480; // We'll use a lookup table so that we don't have to repeat the math over and over float[] depthLookUp = new float[2048]; void setup() { size(800,600,P3D); kinect = new Kinect(this); kinect.start(); kinect.enableDepth(true); // We don't need the grayscale image in this example // so this makes it more efficient kinect.processDepthImage(false); // Lookup table for all possible depth values (0 - 2047) for (int i = 0; i < depthLookUp.length; i++) { depthLookUp[i] = rawDepthToMeters(i); } } void draw() { background(0); fill(255); textMode(SCREEN); text("Kinect FR: " + (int)kinect.getDepthFPS() + "\nProcessing FR: " + (int)frameRate,10,16); // Get the raw depth as array of integers int[] depth = kinect.getRawDepth(); // We're just going to calculate and draw every 4th pixel (equivalent of 160x120) int skip = 4; // Translate and rotate translate(width/2,height/2,-50); rotateY(a); for(int x=0; x<w; x+=skip) { for(int y=0; y<h; y+=skip) { int offset = x+y*w; // Convert kinect data to world xyz coordinate int rawDepth = depth[offset]; PVector v = depthToWorld(x,y,rawDepth); stroke(255); pushMatrix(); // Scale up by 200 float factor = 200; translate(v.x*factor,v.y*factor,factor-v.z*factor); // Draw a point point(0,0); popMatrix(); } } // Rotate a += 0.015f; } // These functions come from: http://graphics.stanford.edu/~mdfisher/Kinect.html float rawDepthToMeters(int depthValue) { if (depthValue < 2047) { return (float)(1.0 / ((double)(depthValue) * -0.0030711016 + 3.3309495161)); } return 0.0f; } PVector depthToWorld(int x, int y, int depthValue) { final double fx_d = 1.0 / 5.9421434211923247e+02; final double fy_d = 1.0 / 5.9104053696870778e+02; final double cx_d = 3.3930780975300314e+02; final double cy_d = 2.4273913761751615e+02; PVector result = new PVector(); double depth = depthLookUp[depthValue];//rawDepthToMeters(depthValue); result.x = (float)((x - cx_d) * depth * fx_d); result.y = (float)((y - cy_d) * depth * fy_d); result.z = (float)(depth); return result; } void stop() { kinect.quit(); super.stop(); } And here are the errors: processing.app.debug.RunnerException: NullPointerException at processing.app.Sketch.placeException(Sketch.java:1543) at processing.app.debug.Runner.findException(Runner.java:583) at processing.app.debug.Runner.reportException(Runner.java:558) at processing.app.debug.Runner.exception(Runner.java:498) at processing.app.debug.EventThread.exceptionEvent(EventThread.java:367) at processing.app.debug.EventThread.handleEvent(EventThread.java:255) at processing.app.debug.EventThread.run(EventThread.java:89) Exception in thread "Animation Thread" java.lang.NullPointerException at org.openkinect.processing.Kinect.enableDepth(Kinect.java:70) at PointCloud.setup(PointCloud.java:48) at processing.core.PApplet.handleDraw(PApplet.java:1583) at processing.core.PApplet.run(PApplet.java:1503) at java.lang.Thread.run(Thread.java:637)

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• Try and catch error trapping. why is it so significant

  - by oded

  sorry if it sounds dumb ' as i am i a process of learnning java i try to understand , why on earth i should "try" a method to catch errors. it looks to me like the concept is:- ' letting a process run assuming its not properly developed. should i always assume that a program based on classes and inheritance is bound for unexpected errors, which i should handle with such a heavy tools like try catch throw throws ? should all java programs be included withing try catch framework? Thanks Oded.

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• Integrating Oracle Forms Applications 11g Into SOA (4-6/Mai/10)

  - by Claudia Costa

  Workshop Description This is a Free workshop of 3 days is targeted at Oracle Forms professionals interested in integrating Oracle Forms into a Service Oriented Architecture. The workshop highlights how Forms can be part of a Service Oriented Architecture, how the Oracle Forms functionalities make it possible to integrate existing (or new) Forms applications with new or existing development utilizing the Service Oriented Architecture concepts. The goal is to understand the incremental approach that Forms provides to developers who need to extend their business platform to JEE, allowing Oracle Forms customers to retain their investment in Oracle Forms while leveraging the opportunities offered by complementing technologies. During the event the attendees will implement the Oracle Forms functionalities that make it possible to integrate with SOA. Register Now! Prerequisites ·         Knowledge of the Oracle Forms development environment (mandatory) ·         Basic knowledge of the Oracle database ·         Basic knowledge of the Java Programming Language ·         Basic knowledge of Oracle Jdeveloper or another Java IDE   System Requirements   This workshop requires attendees to provide their own laptops for this class. Attendee laptops must meet the following minimum hardware/software requirements:   ·         Laptop/PC with minimum 4 GB RAM ·         Oracle Database ·         Oracle Forms 11g R1 PS1 (WebLogic Server 10.1.3.2 + Portal, Forms, Reports and Discoverer ) ·         Oracle JDeveloper 11g R1 PS1 http://download.oracle.com/otn/java/jdeveloper/1112/jdevstudio11112install.exe ·         TCP-IP Loopback Adapter Installation (before the SOASuite installation) ·         Oracle SOASuite 11g R1 PS1 (without BAM component) When asked for an admin password, please use 'welcome1 http://download.oracle.com/otn/nt/middleware/11g/ofm_rcu_win_11.1.1.2.0_disk1_1of1.zip http://download.oracle.com/otn/nt/middleware/11g/ofm_soa_generic_11.1.1.2.0_disk1_1of1.zip ·         Oracle BI Publisher 10.1.3.4.1 http://download.oracle.com/otn/nt/ias/101341/bipublisher_windows_x86_101341.zip ·         Oracle BI Publisher Desktop 10.1.3.4. http://download.oracle.com/otn/nt/ias/101341/bipublisher_desktop_windows_x86_101341.zip   ·         At least 1 Oracle Forms solution already upgraded to the Oracle FMW 11g platform.   ------------------------------------------------------------------------------------------   Horário e Local:   4-6 de Maio / 9:30-18:00h Oracle, Porto Salvo Register Here Para mais informação por favor contacte: [email protected]

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• UBJsonReader (Libgdx) unable to to read UBJson from Python(Blender)

  - by daniel

  I am working on an export tool from Blender to Libgdx, exports like custom attributes and other information (Almost completed), this is a very cool tool that will speed up a lot your works, after I completed I will send to public to contribute forum, Export format is uses python's Standard Json module and readable text, it of course works fine, but I wanna also have a Binary Json export for faster load, so users can Export Straight to Libgdx, but after I search I found that UBJson with draft9.py (simpleubjson 0.6.1) encode is seems matches with one FBXConverter's UBJsonWriter( Xoppa wrote), but when I export, I am not able to read the file, and send this errors (Java heap space) seems this is a different between byte sizes in UBJson(python) and UBJsonReader. how can I write a correct one in python that matches with Libgdx's UBJsonReader, and would be cross-platform? Exception in thread "LWJGL Application" com.badlogic.gdx.utils.GdxRuntimeException: java.lang.OutOfMemoryError: Java heap space at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:120) Caused by: java.lang.OutOfMemoryError: Java heap space at com.badlogic.gdx.utils.UBJsonReader.readString(UBJsonReader.java:162) at com.badlogic.gdx.utils.UBJsonReader.parseString(UBJsonReader.java:150) at com.badlogic.gdx.utils.UBJsonReader.parseObject(UBJsonReader.java:112) at com.badlogic.gdx.utils.UBJsonReader.parse(UBJsonReader.java:59) at com.badlogic.gdx.utils.UBJsonReader.parse(UBJsonReader.java:52) at com.badlogic.gdx.utils.UBJsonReader.parse(UBJsonReader.java:36) at com.badlogic.gdx.utils.UBJsonReader.parse(UBJsonReader.java:45) at com.me.gdximportexport.GdxImportExport.create(GdxImportExport.java:43) at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:136) at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:114) Tested on UbuntuStudio 13.10 with OpenJdk 7, and Windows 7 with jdk 7 Thanks for any guides.

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• JBoss Seam project can not be run/deployed

  - by user1494328

  I created sample application in Seam framework (Seam Web Project) and JBoss Server 7.1. When I try run application, console dislays: 23:29:35,419 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-3) MSC00001: Failed to start service jboss.deployment.unit."secoundProject-ds.xml".PARSE: org.jboss.msc.service.StartException in service jboss.deployment.unit."secoundProject-ds.xml".PARSE: Failed to process phase PARSE of deployment "secoundProject-ds.xml" at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:119) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final] at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.2.GA.jar:1.0.2.GA] at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.2.GA.jar:1.0.2.GA] at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0_24] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0_24] at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_24] Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: IJ010061: Unexpected element: local-tx-datasource at org.jboss.as.connector.deployers.processors.DsXmlDeploymentParsingProcessor.deploy(DsXmlDeploymentParsingProcessor.java:85) at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:113) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final] ... 5 more Caused by: org.jboss.jca.common.metadata.ParserException: IJ010061: Unexpected element: local-tx-datasource at org.jboss.jca.common.metadata.ds.DsParser.parseDataSources(DsParser.java:183) at org.jboss.jca.common.metadata.ds.DsParser.parse(DsParser.java:119) at org.jboss.jca.common.metadata.ds.DsParser.parse(DsParser.java:82) at org.jboss.as.connector.deployers.processors.DsXmlDeploymentParsingProcessor.deploy(DsXmlDeploymentParsingProcessor.java:80) ... 6 more 23:29:35,452 INFO [org.jboss.as.server.deployment] (MSC service thread 1-4) JBAS015877: Stopped deployment secoundProject-ds.xml in 1ms 23:29:35,455 INFO [org.jboss.as.server] (DeploymentScanner-threads - 2) JBAS015863: Replacement of deployment "secoundProject-ds.xml" by deployment "secoundProject-ds.xml" was rolled back with failure message {"JBAS014671: Failed services" => {"jboss.deployment.unit.\"secoundProject-ds.xml\".PARSE" => "org.jboss.msc.service.StartException in service jboss.deployment.unit.\"secoundProject-ds.xml\".PARSE: Failed to process phase PARSE of deployment \"secoundProject-ds.xml\""}} 23:29:35,457 INFO [org.jboss.as.server.deployment] (MSC service thread 1-1) JBAS015876: Starting deployment of "secoundProject-ds.xml" 23:29:35,920 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-1) MSC00001: Failed to start service jboss.deployment.unit."secoundProject-ds.xml".PARSE: org.jboss.msc.service.StartException in service jboss.deployment.unit."secoundProject-ds.xml".PARSE: Failed to process phase PARSE of deployment "secoundProject-ds.xml" at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:119) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final] at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.2.GA.jar:1.0.2.GA] at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.2.GA.jar:1.0.2.GA] at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0_24] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0_24] at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_24] Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: IJ010061: Unexpected element: local-tx-datasource at org.jboss.as.connector.deployers.processors.DsXmlDeploymentParsingProcessor.deploy(DsXmlDeploymentParsingProcessor.java:85) at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:113) [jboss-as-server-7.1.1.Final.jar:7.1.1.Final] ... 5 more Caused by: org.jboss.jca.common.metadata.ParserException: IJ010061: Unexpected element: local-tx-datasource at org.jboss.jca.common.metadata.ds.DsParser.parseDataSources(DsParser.java:183) at org.jboss.jca.common.metadata.ds.DsParser.parse(DsParser.java:119) at org.jboss.jca.common.metadata.ds.DsParser.parse(DsParser.java:82) at org.jboss.as.connector.deployers.processors.DsXmlDeploymentParsingProcessor.deploy(DsXmlDeploymentParsingProcessor.java:80) ... 6 more 23:29:35,952 INFO [org.jboss.as.controller] (DeploymentScanner-threads - 2) JBAS014774: Service status report JBAS014777: Services which failed to start: service jboss.deployment.unit."secoundProject-ds.xml".PARSE: org.jboss.msc.service.StartException in service jboss.deployment.unit."secoundProject-ds.xml".PARSE: Failed to process phase PARSE of deployment "secoundProject-ds.xml" My secoundProject-ds.xml: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE datasources PUBLIC "-//JBoss//DTD JBOSS JCA Config 1.5//EN" "http://www.jboss.org/j2ee/dtd/jboss-ds_1_5.dtd"> <datasources> <local-tx-datasource> <jndi-name>secoundProjectDatasource</jndi-name> <use-java-context>true</use-java-context> <connection-url>jdbc:mysql://localhost:3306/database</connection-url> <driver-class>com.mysql.jdbc.Driver</driver-class> <user-name>root</user-name> <password></password> </local-tx-datasource> </datasources> When I comment tags errors disappear, but application is disabled in browser (The requested resource (/secoundProject/) is not available.). What should I do to fix this problem?

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• SOCharts: Charts by Tags

  - by abhin4v

  Screenshot I created this small app as a weekend hack. It shows the reputations, upvotes, downvotes and accepted answers for a user against the tags for the answers. About I wanted to know how may upvotes I was away from getting the bronze badge for the clojure tag. But I could not find any straightforward way of doing that. So I wrote this app (in Clojure, of course). The SO API is used for the data and the charts are created using the Google Chart API. The charts are opened in the default browser. License Licensed under EPL 1.0. Download If you have Clojure and Leiningen installed, you can simply get the code from https://gist.github.com/725331, save it as socharts.clj and then run lein repl -e "(load \"socharts\")(refer 'socharts.socharts)(-main)" for launching the Swing UI If you don't have Clojure installed, but have Java then download the standalone jar from http://dl.dropbox.com/u/5247/socharts-1.0.0-standalone.jar and run it as javaw -jar socharts-1.0.0-standalone.jar Once the UI is launched, just type your user id in the input box and press <ENTER>. It will take some time to download the data from the SO API (the progress bar shows the download progress) and then it will open the charts in your default browser. You can also run it as a command line app by running lein repl -e "(load \"socharts\")(refer 'socharts.socharts)(-main <userid>)" or java -jar socharts-1.0.0-standalone.jar <userid> where you replace <userid> with your user id. Be warned that because of a missing feature in the SO API, it will fetch the data for each question you have answered. So the maximum limit is 10000 answers (the SO API call limit). Platform All platforms with Java 1.6. Contact You can reach me at abhinav [at] abhinavsarkar [dot] net. Please report bugs/comments/suggestions as answers to this post. Code Code was written in Clojure with the UI in Swing. It is available at https://gist.github.com/725331. It's a public gist so your can fork it if you like to do some changes.

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• Mismanaged Session Cookie Issue Fixed for EBS in JRE 1.6.0_23

  - by Steven Chan

  At last:  some good news for those of you affected by the mismanaged session cookie issue in E-Business Suite environments.  This issue is resolved by the latest Sun Java Runtime Environment 1.6.0_23 (a.k.a. JRE 6u23, internal version 1.6.0_23-b05).See the 1.6.0_23 Update Release Notes for details about what has changed in this release.  This release is available for download from the usual Sun channels and through the 'Java Automatic Update' mechanism.This JRE release has been certified with both Oracle E-Business Suite Release 11i and 12.  We recommend this release for all E-Business Suite users.

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• Absent Code attribute in method that is not native or abstract

  - by kerry

  I got the following, quite puzzling error today when running a unit test: java.lang.ClassFormatError: Absent Code attribute in method that is not native or abstract in class file javax/servlet/http/Cookie A google search found this post, which explains that it is caused by having an interface in the classpath, and not an actual implementation. In this case it’s the java-ee interface. To fix this I added the jetty servlet api implementation to my pom: jetty javax.servlet test Piece of cake. I have run in to this before, so I figured I would capture the fix here in case I run in to it again.

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• How to Upgrade Oracle JDK and remove old JDK settings

  - by obysr

  i searched and not found how to upgrade oracle jdk in here. I'm not satisfied with OpenJDK7 because it doesn't come with Java Compiler. I has installed and configured Sun Java SDK 6 and i want to upgrade to Oracle JDK 7. I searched ppas from launchpad an wubp8 but it didn't work. How should I do to upgrade Sun JDK 6 to Oracle JDK 7 and also clearly remove all Sun JDK 6 settings? I'm very grateful for your answers. Sorry for my english

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• Java Champion Jorge Vargas on Extreme Programming, Geolocalization, and Latin American Programmers

  - by Janice J. Heiss

  In a new interview, up on otn/java, titled “An Interview with Java Champion Jorge Vargas,” Jorge Vargas, a leading Mexican developer, discusses the process of introducing companies to Enterprise JavaBeans through the application of Extreme Programming. Among other things, he gives workshops about building code with agile techniques and creates a master project to build all apps based on Scrum, XP methods and Kanban. He focuses on building core components such as security, login, and menus. Vargas remarks, “This may sound easy, but it’s not—the process takes months and hundreds of hours, but it can be controlled, and with small iterations, we can translate customer requirements and problems of legacy systems to the new system.” In regard to his work with geolocalization, he says: “We have launched a beta program of Yumbling, a geolocalization-based app, with mobile clients for BlackBerry, iPhone, Android, and Nokia, with a Web interface. The first challenge was to design a simple universal mechanism providing information to all clients and to minimize maintenance provision to them. I try not to generalize a lot—to avoid low performance or misunderstanding in processing data. We use the latest Java EE technology—during the last five years, I’ve taught people how to use Java EE efficiently.” Check out the interview here.

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• An Overview of Batch Processing in Java EE 7

  - by Janice J. Heiss

  Up on otn/java is a new article by Oracle senior software engineer Mahesh Kannan, titled “An Overview of Batch Processing in Java EE 7.0,” which explains the new batch processing capabilities provided by JSR 352 in Java EE 7. Kannan explains that “Batch processing is used in many industries for tasks ranging from payroll processing; statement generation; end-of-day jobs such as interest calculation and ETL (extract, load, and transform) in a data warehouse; and many more. Typically, batch processing is bulk-oriented, non-interactive, and long running—and might be data- or computation-intensive. Batch jobs can be run on schedule or initiated on demand. Also, since batch jobs are typically long-running jobs, check-pointing and restarting are common features found in batch jobs.” JSR 352 defines the programming model for batch applications plus a runtime to run and manage batch jobs. The article covers feature highlights, selected APIs, the structure of Job Scheduling Language, and explains some of the key functions of JSR 352 using a simple payroll processing application. The article also describes how developers can run batch applications using GlassFish Server Open Source Edition 4.0. Kannan summarizes the article as follows: “In this article, we saw how to write, package, and run simple batch applications that use chunk-style steps. We also saw how the checkpoint feature of the batch runtime allows for the easy restart of failed batch jobs. Yet, we have barely scratched the surface of JSR 352. With the full set of Java EE components and features at your disposal, including servlets, EJB beans, CDI beans, EJB automatic timers, and so on, feature-rich batch applications can be written fairly easily.” Check out the article here.

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• Is it worth learning either GWT or Vaadin?

  - by NimChimpsky

  I consider myself a decent java/web developer. In my career I have always used servlets and ejb's with a web front end, most recently incoporating jquery and ajax. I can see the theoretical benefit of using GWT or Vaadin: it is my understanding they convert Java code to the required JavaScript/HTML. So the developer gets the benefit of cross browser compatibility and compile time error checking (of web GUI elements). My question is threefold: Are there any other benefits I am missing that would be gained using Vaadin or GWT? I am actually quite confident and productive using HTML and JavaScript - so will I actually see any benefit? Or will it just make my knowledge of these areas redundant (as they are handled by GWT/Vaadin)? Will the end result be that I can create enterprise scale data driven websites in a reasonably short time? I can however already do this, and I have not wasted any time learning GWT/Vaadin.

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• how to concatenate two strings in shell script in 3.13.0-34-generic kernel

  - by saikrishna

  I want to concatenate two strings for the shell file im getting error when i have created the shell file in following manner could you please suggest how to get it set export APP_HOME="/home/sfptladmin/ArchivalDaemon" export JAVA_HOME="/usr/lib/jvm/java-7-oracle/jre" export LIBPATH="/home/sfptladmin/ArchivalDaemon/lib" export CPATH=$APP_HOME/conf export CPATH=$CPATH:$LIBPATH/commons-beanutils-core-1.7.0.jar export CPATH=$CPATH:$LIBPATH/commons-collections-3.2.jar export CPATH=$CPATH:$LIBPATH/commons-io-1.4.jar export CPATH=$CPATH:$LIBPATH/commons-lang.jar export CPATH=$CPATH:$LIBPATH/commons-net.jar export CPATH=$CPATH:$LIBPATH/dataloader-27.0.1-uber.jar export CPATH=$CPATH:$LIBPATH/dom4j-1.6.1.jar export CPATH=$CPATH:$LIBPATH/log4j-1.2.15.jar export CPATH=$CPATH:$LIBPATH/opencsv2.3.jar export CPATH=$CPATH:$LIBPATH/poi-3.7.jar export CPATH=$CPATH:$LIBPATH/poi-ooxml-3.7.jar export CPATH=$CPATH:$LIBPATH/poi-ooxml-schemas-3.7.jar export CPATH=$CPATH:$LIBPATH/wsc-23-min.jar export CPATH=$CPATH:$LIBPATH/xmlbeans-2.5.0.jar export CPATH=$CPATH:$LIBPATH/archival-daemon-main.jar export CPATH=$CPATH:$LIBPATH/sbmclasspath.jar export CPATH=$CPATH java -Xms256m -Xmx512m -classpath $CPATH "-Dfile.encoding=UTF-8" com.genpact.proflow.daemon.archival.manager.ArchivalManager echo $CPATH

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• How could this diagram of the current most lucrative technologies be improved?

  - by Edward Tanguay

  I'm giving a talk in April 2011 on the "Developer English" and showing my non-developer audience, mostly English teachers, various diagrams to explain how developers see their industry etc. One of these diagrams is "Hot Technologies", basically, if you want to become a developer, what technologies should you learn to have the highest chance of (1) getting a job (2) making a good salary, and (3) work with the most exciting technology. This is a draft I made just to get some ideas out, basically C#, PHP, Java are where the bulk of the jobs are. Mobile development has a big future. JavaScript is becoming more and more important, and I want to list "minor technologies" such a Python, Ruby on Rails to the side, I assume e.g. that in general, there are a much smaller percentage of jobs in these technologies as in C#, PHP, Java. How could this diagram be improved?

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• What is the start point in game development? Where to start?

  - by Dragon

  I understand, I'm not unique with such a question, there are a lot of questions like this one. But I hope you'll take a minute and maybe can give me a piece of advice. I have an idea to develop games, but I don't know where is the start point in game development. The learning curve isn't as straight as in learning of a programming language, but I want to give it a try. I have some experience with OOP and programming in general. I know (not too deep) C#, Java programming languages. I searched info on where to start, read a lot of blogs, forums and so on. Once I decided "stop wandering around, just start develop a game" and I started. At the moment I have a console version of very simple game (RPS - rock-paper-scissors) developed with C#. It has different modes: "player vs cpu" and "player vs player". Some time later I looked at the code and decided that it should be refactored or even redeveloped from the scratch. And I thought that time "GUI is what I need. I can add logic later." And now I'm here. I've already decided to make RPS with GUI, then make multiplayer and so on. I'm not thinking about 3D now, 2D is enough. It doesn't matter what language to use: C# or Java, I found frameworks for both - XNA (C#) and Slick (Java). Both are good for 2D game development. But I know nothing about sprites, how to bind objects on the screen and so on. You can say "you don't need it for such simple game like RPS", but RPS is the beginning, I have some ideas like "Tower Defense" game... you know, everybody has ideas, wishes.... and this knowledge is useful and in some way obligatory. So what is the start point to achieve my plans, ideas, wishes? Where to start? Is it possible to make game development learning curve a little bit straight? Or there're ways that amateur and game development beginners use for years? Thank you for you answers and advise in advance. P.S Sorry for that this post turned out an essay, but I tried to express my wish to start acting. Hope I managed to do it.

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• Why eclipse is hanging while in debug mode ?

  - by Pratik

  We are developing our web application using JAVA GWT framework. We are using Eclipse Indigo as a development GUI. We are facing problems while debugging the JAVA gwt application in eclipse. Most of the time, Eclipse hangs while debugging. We tried to increase the memory buffer size in eclipse but no luck. We had tried to run the eclipse in various environment like Windows, Fedora 16, Cent OS. but some how not getting positive results. Can anyone help me out to decide which OS, and eclipse or version should we have to use so can able to resolve the hanging issue? Thanks in advance. Pratik

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• How to create contracts in python

  - by recluze

  I am just moving to python from Java and have a question about the way the two do things. My question relates to contracts. An example: an application defines an interface that all plugins must implement and then the main application can call it. In Java: public interface IPlugin { public Image modify(Image img); } public class MainApp { public main_app_logic() { String pluginName = "com.example.myplugin"; IPlugin x = (IPlugin) Class.forName(pluginName); x.modify(someimg); } } The plugin implements the interface and we use reflection in main app to call it. That way, there's a contract between the main app and the plugin that both can refer to. How does one go about doing something similar in Python? And also, which approach is better? p.s. I'm not posting this on SO because I'm much more concerned with the philosophy behind the two approaches.

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• Advice for beginner programmer

  - by user3461957

  I am beginner in software development. I noticed when I try to learn one technology let's say .NET I loose my grip over other for example Java. I thought it would be better to concentrate on one technology either Java or .NET to make significant advancement and be an expert, because they can be many details which one can ignore when keeps on changing between technologies. Is my decision right? Do experts choose this approach? Update: Should I pursue my career knowing one technology or not?

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