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Slick Forums • View topic - Slick applet - error when multiple jar files

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PostPosted: Wed May 30, 2012 7:48 pm 
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PostPosted: Wed May 30, 2012 8:10 pm 
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I finally managed to resolve the problem. I used some unsigned jars and some of them I signed. There were also some misspelling in the jar names. Now I have another problem.
I get this error:
java.security.AccessControlException: access denied ("java.io.FilePermission" "location-mapping.rdf" "read")


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PostPosted: Wed May 30, 2012 8:40 pm 
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looks like you are using a File to read from the file system when you should be using an InputStream.

What does the code look like where you are trying to load "location-mapping.rdf" ?


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PostPosted: Sun Jun 03, 2012 3:05 pm 
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PostPosted: Sun Jun 03, 2012 8:49 pm 
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You must use getResources(AsStream) to access files on the classpath (eg inside JAR files). You can't use File, FileInputStream, FileReader, RandomAccessFile etc.


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PostPosted: Wed Jun 06, 2012 6:13 am 
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I finally managed to resolve this. I had a lot of jars and some of them were not signed so eventually I resigned all my jars and now it is working.
Now I would have another question.
Is it possible to save state (so the user can afterwards loads the saved state) in an applet?
If not is there a workaround for this?


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PostPosted: Wed Jun 06, 2012 6:32 pm 
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If you are signing all your jars you have full access to the file system so saving and loading save files should be the same as applications.


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PostPosted: Wed Jun 06, 2012 7:03 pm 
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Is there any working example code of saving the game state and loading it again?
I saw someone suggested Xstream lib for saving game state.
Isn't this possible with the use of just the Slick library?


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PostPosted: Wed Jun 06, 2012 7:21 pm 
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you could have a look at Slick's class and if it is sufficient for your needs.


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PostPosted: Sun Jun 10, 2012 1:03 pm 
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Thank very much for all you answers. I have one more question.
Is it possible to send parameters to the applet?
I have a jsp login page and the user will have access to the html (with applet inside) only if it logs in.
Could I access in my slick game (that runs in the applet) the user login credentials?
I have an RPG game and I would like to know which user files I should load from the database.


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PostPosted: Sun Jun 10, 2012 1:14 pm 
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PostPosted: Fri Mar 31, 2017 5:28 am 
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Wild cards were introduced from Java 6. Class path entries can contain the basename wildcard character *, which is considered equivalent to specifying a list of all the files in the directory with the extension .jar or .JAR.

java -cp "lib/*" -jar %MAINJAR%

If you need only specific jars, you will need to add them individually. The classpath string does not accept generic wildcards like Jar*, .jar, hiber etc.

Example

The following entry does not work:

java -cp "Halo.jar;lib/*.jar" ni.package.MainClass

Correct entry is :

java -cp "Halo.jar;lib/*" ni.package.MainClass

More about....

John


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