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  • When would you prefer to declare an exception rather than handling it in Java?

    - by Epitaph
    I know we can declare the exception for our method if we want it to be handled by the calling method. This will even allow us to do stuff like write to the OutputStream without wrapping the code in try/catch block if the enclosing method throws IOException. My question is: Can anyone provide an instance where this is usually done where you'd like the super class to handle the exception instead of the current method?

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  • Junit (3.8.1) testing that an exception is thrown (works in unit test, fails when added to a testSui

    - by Mike Cargal
    I'm trying to test that I'm throwing an exception when appropriate. In my test class I have a method similar to the following: public void testParseException() { try { ClientEntitySingleton.getInstance(); fail("should have thrown exception."); } catch (RuntimeException re) { assertEquals( "<exception message>", re.getMessage()); } } This works fine (green bar) whenever I run that single unitTest class. However, when I add that test to a testSuite, I get a red bar Unit test failure reported on the exception. One more thing... it works in the testSuite, if it's the first test in the suite. Actually, I'm doing two of these tests and just figured out that if I make them the first two tests in the suite, all is good, but I get this failure if a "regular" test precedes it. So I have a work-around, but no real answer. Any ideas? Heres'a stack trace of the "failure" java.lang.RuntimeException: ProcEntity client dn="Xxxxxx/Xxxx/XXX" is defined multiple times. at com.someco.someprod.clientEntityManagement.ClientEntitySingleton.addClientEntity(ClientEntitySingleton.java:247) at com.someco.someprod.clientEntityManagement.ClientEntitySingleton.startElement(ClientEntitySingleton.java:264) at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at com.someco.someprod.clientEntityManagement.ClientEntitySingleton.parse(ClientEntitySingleton.java:216) at com.someco.someprod.clientEntityManagement.ClientEntitySingleton.reload(ClientEntitySingleton.java:303) at com.someco.someprod.clientEntityManagement.ClientEntitySingleton.setInputSourceProvider(ClientEntitySingleton.java:88) at com.someco.someprod.clientEntityManagement.test.TestClientBase.setUp(TestClientBase.java:17) at com.someco.someprod.clientEntityManagement.test.TestClientEntityDup.setUp(TestClientEntityDup.java:8) at junit.framework.TestCase.runBare(TestCase.java:125) at junit.framework.TestResult$1.protect(TestResult.java:106) at junit.framework.TestResult.runProtected(TestResult.java:124) at junit.framework.TestResult.run(TestResult.java:109) at junit.framework.TestCase.run(TestCase.java:118) at junit.framework.TestSuite.runTest(TestSuite.java:208) at junit.framework.TestSuite.run(TestSuite.java:203) at junit.framework.TestSuite.runTest(TestSuite.java:208) at junit.framework.TestSuite.run(TestSuite.java:203) at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:128) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)

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  • What exception is thrown if a web service i'm using Times Out?

    - by BT
    I'm calling a .NET web service within my existing .NET webservice, i would like to know what exception is thrown from the web method if timeout happens, i have set the web service timeout to some lower value then the default 90 sec. and want to add business logic if time out happens. Is this the exception i should be looking at? System.Net.WebException

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  • How to identify what function call raise an exception in Python?

    - by boos
    i need to identify who raise an exception to handle better str error, is there a way ? look at my example: try: os.mkdir('/valid_created_dir') os.listdir('/invalid_path') except OSError, msg: # here i want i way to identify who raise the exception if is_mkdir_who_raise_an_exception: do some things if is_listdir_who_raise_an_exception: do other things .. how i can handle this, in python ?

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  • When i am replacing or inserting an object into nsmutable array, I am getting Exception.

    - by Madan Mohan
    Hi, While replacing or inserting into an nsmutable array, I am getting exception as Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '* -[NSCFArray replaceObjectAtIndex:withObject:]: mutating method sent to immutable object' [list replaceObjectAtIndex:indexRow withObject:editcontacts]; //or [list insertObject:editcontacts atIndex:indexRow]; please help me. Madan, Thank You.

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  • Is it possible to call the main(String[] args) after catching an exception?

    - by Jason
    I'm working on a Serpinski triangle program that asks the user for the levels of triangles to draw. In the interests of idiot-proofing my program, I put this in: Scanner input= new Scanner(System.in); System.out.println(msg); try { level= input.nextInt(); } catch (Exception e) { System.out.print(warning); //restart main method } Is it possible, if the user punches in a letter or symbol, to restart the main method after the exception has been caught?

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  • The remote host closed the connection. The error code is 0x80070057

    - by Jalpesh P. Vadgama
    While creating a PDF or any file with asp.net pages I was getting following error. Exception Type:System.Web.HttpException The remote host closed the connection. The error code is 0x80072746. at System.Web.Hosting.ISAPIWorkerRequestInProcForIIS6.FlushCore(Byte[] status, Byte[] header, Int32 keepConnected, Int32 totalBodySize, Int32 numBodyFragments, IntPtr[] bodyFragments, Int32[] bodyFragmentLengths, Int32 doneWithSession, Int32 finalStatus, Boolean& async) at System.Web.Hosting.ISAPIWorkerRequest.FlushCachedResponse(Boolean isFinal) at System.Web.Hosting.ISAPIWorkerRequest.FlushResponse(Boolean finalFlush) at System.Web.HttpResponse.Flush(Boolean finalFlush) at System.Web.HttpResponse.Flush() at System.Web.UI.HttpResponseWrapper.System.Web.UI.IHttpResponse.Flush() at System.Web.UI.PageRequestManager.RenderFormCallback(HtmlTextWriter writer, Control containerControl) at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) at System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) at System.Web.UI.HtmlControls.HtmlForm.Render(HtmlTextWriter output) at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) at System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) at System.Web.UI.HtmlFormWrapper.System.Web.UI.IHtmlForm.RenderControl(HtmlTextWriter writer) at System.Web.UI.PageRequestManager.RenderPageCallback(HtmlTextWriter writer, Control pageControl) at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) at System.Web.UI.Page.Render(HtmlTextWriter writer) at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) at System.Web.UI.Control.RenderControl(HtmlTextWriter writer) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) Exception Type:System.Web.HttpException The remote host closed the connection. The error code is 0x80072746. at System.Web.Hosting.ISAPIWorkerRequestInProcForIIS6.FlushCore(Byte[] status, After searching and analyzing I have found that client was disconnected and still I am flushing the response which I am doing for creating PDF files from the stream. To fix this kind of error we can use Response.IsClientConnected property to check whether client is connected or not and then we can flush and end response from client. Here is the sample code to fix that problem. if (Response.IsClientConnected) { Response.Flush(); Response.End(); } That’s it Hope this will help you..Stay tuned for more.. Till that Happy Programming!! Technorati Tags: Exception,ASp.NET

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  • Is a disk/ata timeout exception dangerous?

    - by j-g-faustus
    I have a few hard drives in mdadm RAID 5 configured to go to standby after a few minutes of inactivity. (Using hdparm.conf spindown_time.) At irregular intervals I get messages like these in dmesg: [ 1840.251661] ata4.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen [ 1840.251722] ata4.00: failed command: SMART [ 1840.251758] ata4.00: cmd b0/d5:01:06:4f:c2/00:00:00:00:00/00 tag 0 pio 512 in [ 1840.251759] res 40/00:14:50:2e:04/00:00:02:00:00/40 Emask 0x4 (timeout) [ 1840.251858] ata4.00: status: { DRDY } [ 1840.251888] ata4: hard resetting link [ 1840.600742] ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [ 1840.601521] ata4.00: configured for UDMA/133 [ 1840.601547] ata4: EH complete [337877.713988] ata4.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen [337877.714019] ata4.00: failed command: SMART [337877.714038] ata4.00: cmd b0/d5:01:06:4f:c2/00:00:00:00:00/00 tag 0 pio 512 in [337877.714039] res 40/00:04:90:10:81/00:00:00:00:00/40 Emask 0x4 (timeout) [337877.714089] ata4.00: status: { DRDY } [337877.714107] ata4: hard resetting link [337878.063085] ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [337878.063743] ata4.00: configured for UDMA/133 [337878.063764] ata4: EH complete I think the exception is caused by smartd when a drive does not wake up quickly enough. There are no issues (that I can tell) in accessing the drives normally through the file system - it takes a few seconds longer than normal when they are asleep, but there are no exceptions. Is this something I should worry about, as a potential symptom on something that could corrupt a drive over time? Or can I safely ignore it as part of normal operation? Edit: By request: smartctl -a for sdaand sde, both disks are members of the array. If ata4is the same as scsi-4 then sde is the one that gave the error above, according to /dev/disk/by-path.

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  • .NET remoting exception: Permission denied: cannot call non-public or static methods remotely.

    - by Vilx-
    I'm writing a program which will allow to load a specific managed .DLL file and play with it. Since I want the ability to unload the .DLL file, I'm creating two AppDomains - one for the app itself, the other for the currently loaded .DLL. Since most of the objects in the loaded .DLL do not serialize well, I'm creating a MarshalByRefObject wrapper class which will keep the object itself in its own AppDomain, and expose some reflection functions to the main application AppDomain. However when I try to invoke a method on the remote object I get stuck with an exception: Permission denied: cannot call non-public or static methods remotely. This is very strange, because I'm not using any non-public or static methods at all. In essence, what I have is: class RemoteObjectWrapper: MarshalByRefObject { private Type SourceType; private object Source; public RemoteObjectWrapper(object source) { if (source == null) throw new ArgumentNullException("source"); this.Source = source; this.SourceType = source.GetType(); } public T WrapValue<T>(object value) { if ( value == null ) return default(T); var TType = typeof(T); if (TType == typeof(RemoteObjectWrapper)) value = new RemoteObjectWrapper(value); return (T)value; } public T InvokeMethod<T>(string methodName, params object[] args) { return WrapValue<T>(SourceType.InvokeMember(methodName, System.Reflection.BindingFlags.FlattenHierarchy | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.InvokeMethod | System.Reflection.BindingFlags.Public, null, this.Source, args)); } } And I get the exception when I try to do: var c = SomeInstanceOfRemoteObjectWrapper.InvokeMethod<RemoteObjectWrapper>("somePublicMethod", "some string parameter"); What's going on here? As far as I can understand, the InvokeMethod method doesn't even get executed, the exception is thrown when I try to run it. Added: To clarify - SomeInstanceOfRemoteObjectWrapper is constructed in the .DLL's AppDomain and then returned to my main AppDomain, The InvokeMethod<T>() is called from my main AppDomain (and I expect it to execute in the .DLL's AppDomain).

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  • JSF & jqPlot Uncaught TypeError

    - by sdg
    I have a problem using jqPlot with JSF I added this code to my JSF page: $(document).ready(function () { var s1 = [200, 600, 700, 1000]; var s2 = [460, - 210, 690, 820]; var s3 = [-260, - 440, 320, 200]; var ticks = ['May', 'June', 'July', 'August']; var plot1 = $.jqplot('chart1', [s1, s2, s3], { // The "seriesDefaults" option is an options object that will // be applied to all series in the chart. seriesDefaults: { renderer: $.jqplot.BarRenderer, rendererOptions: { fillToZero: true } }, series: [{ label: 'Hotel' }, { label: 'Event Regristration' }, { label: 'Airfare' }], legend: { show: true, placement: 'outsideGrid' }, axes: { xaxis: { renderer: $.jqplot.CategoryAxisRenderer, ticks: ticks }, yaxis: { pad: 1.05, tickOptions: { formatString: '$%d' } } } }); }); but when I try to load the page I got this error : Uncaught TypeError: Cannot read property 'BarRenderer' of undefined (anonymous function)portfolioModeling.xhtml:184 f.extend._Deferred.e.resolveWithjquery.min.js:2 e.extend.readyjquery.min.js:2 c.addEventListener.C I added the whole required js files and also the css file but I am lost and don't know where is the problem Thanks in advance

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  • Debugging runtime error "Terminating app due to uncaught exception 'NSInternalInconsistencyException

    - by Bill
    I'm going through the Beginning iPhone Development book & stuck in chapter 9. I've spent a few hours trying to debug this error w/o avail: 2010-05-01 19:27:51.361 Nav2[4113:20b] *** Assertion failure in -[UITableView _createPreparedCellForGlobalRow:withIndexPath:], /SourceCache/UIKit/UIKit-984.38/UITableView.m:4709 2010-05-01 19:27:51.362 Nav2[4113:20b] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'UITableView dataSource must return a cell from tableView:cellForRowAtIndexPath:' 2010-05-01 19:27:51.364 Nav2[4113:20b] Stack: ( ... ) I'm not looking for help w/ the book, but tips for how to debug this error? Can I pin down which of my cellForRowAtIndexPath methods is the problem? And how to inspect the type? Or other things should I look at?

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  • Uncaught syntax error: Adding <li> elements to an <ul>

    - by ThePagan
    I keep getting an uncaught syntex error which I know usually means your code has a missing closing something. I keep failing to see what it is that I am missing. The idea of the function is that it extracts the a links ID and Text content and add's it to an un-ordered list. The links have a class of 'ingredient_add' and the unordered list has an ID of 'ingredientsAdded'. I can't see what I've missed here. $(document).ready(function() { $('.ingredient_add').click(function() { event.preventDefault(); var id = this.id; var value = this.text(); $('#ingredientsAdded').append("<li id='"+id+"'>"+value+"</li>"); }); //end add to list }); // end document ready()

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  • Catching uncaught exceptions

    - by kajyr
    Hi everybody. In my workplace we are mantaining a lot of ecommerce websites, some coded better than others. On some of those, sometimes uncaught exceptions are thrown, and showed by the alertbox from the flash player debug (If you have it installed). To rise the average user experience I'd like to report all those exceptions throught a in house tool we already have. Is there a way to catch those exceptions? Maybe the flash player debug exposes them to javascript, or in some other way.

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  • System Out Of Memory Exception in Production Server

    - by Sachin Gupta
    We have .net application installed on production server. It is using .net FrameWork 3.0 on windows server 2003 with RAM 4 GB. But there is a problem in application while running sometimes it throws system out of memory exception. I am very frustrating with this. Also I am unable to simulate the issue. I had checked all the possibilities which can cause the problem but didn’t get any thing which solve the issue I checked on production server event log found the Out Of Memory Exception also INVALID VIEW STATE logs are there. Look at the following event log which may help to find solutions. Exception information: Exception type: HttpException Exception message: Invalid viewstate. Request information: Request path: /zContest/ScriptResource.axd User: LisaA Is authenticated: True Authentication Type: Forms Thread information: Thread ID: 10 Is impersonating: True Stack trace: at System.Web.UI.Page.DecryptStringWithIV(String s, IVType ivType) at System.Web.UI.Page.DecryptString(String s) at System.Web.Handlers.ScriptResourceHandler.DecryptParameter(NameValueCollection queryString) at System.Web.Handlers.ScriptResourceHandler.ProcessRequestInternal(HttpResponse response, NameValueCollection queryString, VirtualFileReader fileReader) at System.Web.Handlers.ScriptResourceHandler.ProcessRequest(HttpContext context) at System.Web.Handlers.ScriptResourceHandler.System.Web.IHttpHandler.ProcessRequest(HttpContext context) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) ------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------------------------ Event code: 3005 Event message: An unhandled exception has occurred. Process information: Process ID: 5388 Process name: w3wp.exe Exception information: Exception type: OutOfMemoryException Exception message: Exception of type 'System.OutOfMemoryException' was thrown. ------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------------------------------------ Please help me out on this

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  • Zend - unable to catch exception [closed]

    - by coder3
    This still throw an uncaught exception.. Any insight why this isn't working? protected function login() { $cart = $this->getHelper('GetCurrentCart'); $returnValue = false; if ($this->view->form->isValid($this->_getAllParams())) { $values = $this->view->form->getValues(); try { $this->goreg = $this->goregFactory->create($this->config->goreg->service_url); if ($this->goreg->login($values['username'], $values['password']) && $this->goregSession->isLoggedIn()) { $returnValue = true; } else { echo 'success 1'; } } catch (Exception $e) { echo 'error 1'; } catch (Zend_Exception $e) { echo 'error 2'; } catch (Zend_Http_Client_Exception $e) { echo 'error 3'; } } return $returnValue; }

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  • o3d javascript uncaught reference error

    - by David Menard
    hey, im new to javascript and am intersted in creating a small o3d script: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Test Game Website</title> </head> <body> <script type="text/javascript" src="o3djs/base.js"></script> <script type = "text/javascript" id="myscript"> o3djs.require('o3djs.camera'); window.onload = init; function init(){ document.write("jkjewfjnwle"); } </script> <div align="background"> <div id="game_container" style="margin: 0px auto; clear: both; background-image: url('./tmp.png'); width: 800px; height:600px; padding: 0px; background-repeat: no-repeat; padding-top: 1px;"></div> </div> </body> </html> the browser cant seem to find o3djs/base.js in this line <script type="text/javascript" src="o3djs/base.js"></script> and gives me an uncaught referenceerror at this line o3djs.require('o3djs.camera'); Obviously, because it can't find the o3djs/base.js... I have installed the o3d pluggin from google and they say that should be IT ive tried on firefox, ie and chrome thanks

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  • Throwing an exception from a BackgroundWorker which calls an async. method (Webrequest)

    - by mrbamboo
    Hi, My main application creates a new BackgroundWorker X the DoWork event handler of X calls a method Y of my controller. This method creates the WebRequest (async.) instance and the callback using AsyncCallback. When the response arrives the callback method Z gets called and the content will be analyzed. It can happen that the response has an unwanted content. At that moment callback Z will throw an exception. I want to catch this exception in my main application. I tried it in DoWork and RunWorkerCompleted but nothing can be caught from there. Error in RunWorkerCompletedEventArgs is always null.

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  • Uncaught OAuthException

    - by Christopher 'Cj' Jesudas
    Guys please help me out with this...the error which my program gives is "Fatal error: Uncaught OAuthException: Error validating application"... My program code is : require ("src/facebook.php"); $appapikey = '132347710178087'; $appsecret = 'e27456d003801ae145a77ab28904fca0'; $facebook = new Facebook($appapikey, $appsecret); $user_id = $facebook->getUser(); $friends = $facebook->api('friends.get'); echo "<p>Hello <fb:name uid=\"$user_id\" useyou=\"false\" linked=\"false\" firstnameonly=\"true\"></fb:name>, you have ".count($friends)." friends"; foreach($friends as $friend){ $infos.=$friend.","; } $infos = substr($infos,0,strlen($infos)-1); $gender=$facebook->api_client->users_getInfo($infos,'sex'); $gender_array = array(); foreach($gender as $gendervalue){ $gender_array[$gendervalue[sex]]++; } $male = round($gender_array[male]*100/($gender_array[male]+$gender_array[female]),2); $female = 100-$male; echo "<ul><li>Males: $male%</li><li>Females: $female%</li></ul>";

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