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Editorial Team
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Asked: 2026-05-30T15:45:44+00:00

So Im trying to use webstart on this application of mine and I keep

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So Im trying to use webstart on this application of mine and I keep getting this error:

java.io.FileNotFoundException:
http://www.fenixflame.net/DropLogger/Drop Logger.jar at
sun.reflect.GeneratedConstructorAccessor2.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown
Source) at java.lang.reflect.Constructor.newInstance(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method) at
sun.net.www.protocol.http.HttpURLConnection.getChainedException(Unknown
Source) at
sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown
Source) at com.sun.deploy.net.BasicHttpRequest.doRequest(Unknown
Source) at com.sun.deploy.net.BasicHttpRequest.doRequest(Unknown
Source) at com.sun.deploy.net.BasicHttpRequest.doGetRequest(Unknown
Source) at com.sun.deploy.net.DownloadEngine.actionDownload(Unknown
Source) at com.sun.deploy.net.DownloadEngine.getCacheEntry(Unknown
Source) at com.sun.deploy.net.DownloadEngine.getCacheEntry(Unknown
Source) at
com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown
Source) at
com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown
Source) at com.sun.deploy.net.DownloadEngine.getResource(Unknown
Source) at com.sun.javaws.LaunchDownload$DownloadTask.call(Unknown
Source) at java.util.concurrent.FutureTask$Sync.innerRun(Unknown
Source) at java.util.concurrent.FutureTask.run(Unknown Source) at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source) Caused by:
java.io.FileNotFoundException:
http://www.fenixflame.net/DropLogger/Drop Logger.jar at
sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown
Source) at java.net.HttpURLConnection.getResponseCode(Unknown Source)
… 15 more

This is my First time using webstart. I tested it out with simple applications and it worked just fine. I think it might have something to do with the fact that the application tries to read a local file when its launched.
Cannot post more than 2 links but you can check it out here:
fenixflame.net/DropLogger/launch.html

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1 Answer

  1. Editorial Team

    Yes problem was the space on the .jar file. I changed it and it worked just fine.
    Its not possible to change the .jar file name inside netBeans, you can only change the project name but that doesnt change the file name. The only way to do change the .jar name is going to the project .xml file or creating a new project with the name you want for your jar file and copying all ur packages there.

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