.gif file can't be extracted from .jar file

Created an applet that uses some .gif files, the first .gif the applet wants is
'neutral.gif'.  the applet runs fine standalone (from a PC subdirectory) in IE.  
When I JAR up the applet and load it to my server (CMSERVER1) and try to run
the applet from my server I get the following messages on the Java console.
(the  "Reached Flag01::init()"  message is a 'System.out.println()' message I put
in the applet to reassure myself that the applet itself was initializing).

Reached  Flag01::init()

com.ms.security.SecurityExceptionEx[Flag01.init]: cannot access file /\\CMSERVER1/LIGHTSPEED/neutral.gif
     at com/ms/security/permissions/FileIOPermission.check (FileIOPermission.java)
     at com/ms/security/PolicyEngine.deepCheck (PolicyEngine.java)
     at com/ms/security/PolicyEngine.checkPermission (PolicyEngine.java)
     at com/ms/security/StandardSecurityManager.chk (StandardSecurityManager.java)
     at com/ms/security/StandardSecurityManager.checkRead (StandardSecurityManager.java)
     at com/ms/security/StandardSecurityManager.checkRead (StandardSecurityManager.java)
     at com/ms/vm/loader/ResourceLoader.getImage (ResourceLoader.java)
     at com/ms/vm/loader/URLClassLoader.getImage (URLClassLoader.java)
     at com/ms/applet/AppletPanel.getImage (AppletPanel.java)
     at com/ms/applet/BrowserAppletFrame.getImage (BrowserAppletFrame.java)
     at java/applet/Applet.getImage (Applet.java)
     at java/applet/Applet.getImage (Applet.java)
     at Flag01.init (Flag01.java:64)
     at com/ms/applet/AppletPanel.securedCall0 (AppletPanel.java)
     at com/ms/applet/AppletPanel.securedCall (AppletPanel.java)
     at com/ms/applet/AppletPanel.processSentEvent (AppletPanel.java)
     at com/ms/applet/AppletPanel.processSentEvent (AppletPanel.java)
     at com/ms/applet/AppletPanel.run (AppletPanel.java)
     at java/lang/Thread.run (Thread.java)

It appears to me that the applet 'Flag01' is found, and it appears that
'neutral.gif' is found.  Why-come can't it access 'neutral.gif'????

'neutral.gif' is not open in something else (no other browser, not in an
editor, not in . . .)

'neutral.gif' has '''normal''' attributes; i.e., it is not 'read only' or
'hidden'

the client is  Win98, IE V5.50.4134.0600

the server is  IIS on WinNT V4.0, SP 5.

C:\Inetpub\wwwroot\LightSpeed (where my app is located) is shared, public,
FULL CONTROL.

I am running an Intranet (the server and my dev PC are the only two machines
on net - the cabling doesn't leave the room the two boxes are in).

have tried many different coding approaches in the .HTM - here is the latest:
  <applet
    align = LEFT
    code = "Flag01.class"
    codebase = "http://cmserver1/LightSpeed"
    archive = "http://cmserver1/LightSpeed/Flag01.jar"
    width = "30"
    height = "35"
  <PARAM NAME=flag VALUE="green">
  <PARAM NAME=interval VALUE="800">
  no browser support  
  </APPLET>

BTW - 'codebase' seems to have no affect one way or the other, I have
to code 'archive' or it doesn't find the .jar (leaving 'codebase' and
'archive' out completely - so that it looks in the .HTM containing subd as default
ain't working for me either!)

thanks - chris-m
LVL 2
christophmAsked:
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jk970Commented:
Can I see the piece of code handling the loading of images. Thx
0
christophmAuthor Commented:
Here is 'init()' - chris-m

    //--------------------------------------------------------------------------
    public void init() {
        String  sPanelNames[] =
            {"neutral.gif",     // neutral flag 0
             "rflag.gif",       // red flag     1
             "gflag.gif",       // green flag   2
             "bflag.gif",       // blue flag    3
             "yflag.gif",       // yellow flag  4
             "nflag.gif"};      // gray flag    5

System.out.println("\nReached  Flag01::init()\n");

        theInterval = getParameter("interval");
        theFlag     = getParameter("flag");

        iPauseInterval = Integer.parseInt(theInterval);
       
        if (theFlag.equals("neutral"))
            iFlag = 0;
        else    
        if (theFlag.equals("red"))
            iFlag = 1;
        else    
        if (theFlag.equals("green"))
            iFlag = 2;
        else    
        if (theFlag.equals("blue"))
            iFlag = 3;
        else    
        if (theFlag.equals("yellow"))
            iFlag = 4;
        else    
        if (theFlag.equals("gray"))
            iFlag = 5;
        else    
            iFlag = 0;

        for (int iIndex = 0;  iIndex < sPanelNames.length; iIndex++)
            imPanels[iIndex] = getImage(getDocumentBase(), sPanelNames[iIndex]);

        setBackground(new Color(192, 192,192));
    }
0
maggariCommented:
Applet has its own security issues. So, when you access files from a system, you should have a security policy file on that system which explicitly gives permission to the applet.

use policytool to create a policy file. Refer to the following link on how to use policytool.


An example policy file you might wants looks like this:

grant codeBase "your_applets_codebase" {
permission java.io.FilePermission "yourfile", "read";
};

0
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yongsingCommented:
It seems that you are trying to read the .gif file from the file system. If your .gif file is in the Flag01.jar file, you can call getClass().getResource() to read it:

for (int iIndex = 0;  iIndex < sPanelNames.length; iIndex++) {
  URL url = getClass().getResource(sPanelNames[iIndex]);
  imPanels[iIndex] = getImage(url);
}
0
Venci75Commented:
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:
PAQ'd and pts removed
Please leave any comments here within the next seven days.
 
PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!
 
Venci75
EE Cleanup Volunteer
0
NetminderCommented:
Per recommendation, points NOT refunded and question closed.

Netminder
EE Admin
0

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