Help needed please.. with JPG file

Hi all,
I am a Forms developer that DOES NOT use Jdeveloper so go easy on me!
I have with the help of this forum amended the Java Bean Forms graph to create a JPG from the Graph bean. Our original problem was the need to print the graphs that were displayed, the forum very helpfully guided me through creating a JPG and i used Forms to open this and therefore user can then print it.
I have used the following:
File f = new File((String) _object,"img.gif");
FileOutputStream fos = new FileOutputStream(f);
m_graph.exportToGIF(fos);
I then use Forms to Pass the clients temp location and save the file to the local PC temp location as img.gif.
Unforunately this came up with user rights problems and in order to make this work we needed to sign the certificate. BUT by signing the certificate it meant EVERY one of our customers has to approve the changes once we give them the new JAR. Unforunately we use (as per Oracle Certification) JRE 1.4.2_13 and when the customers go to approve the changes it crashes JAVA (if they have previousely used the system). The only way to get round this (that we have found) is to clear all signitures and clear cache on the JRE. This is something that our customers will not accept doing.
I posted that initial JRE problem but not had any comeback so my next question is. Is there a way to do what we need to do without the need of signing the JAR?
The graph pre these changes did not need the approvals. So im assuming its the fact we want to place something on the Client PC is what is requiring the approval. Can we do what were doing but place the JPG on the Server and use something like webutil to get the file over. Meaning we dont need to use a different JAR?
Any help would be most appreciated

Hi,
I cannot help you much on the issue, but I can confirm some of your thought. Signing is indeed required because you're trying to access the user's PC, which is a potential security breach hence why Java requires that the user agrees to it when the application goes out of the normal sandbox. You can check out http://www.securingjava.com/chapter-two/ as an introduction on the subject.
I don't really get your use case though, you simply want to print the generated gif file right, so why do you write it on the user's hard drive?
Regards,
~ Simon

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    {------------ Please click the "White Kudos" Thumbs Up to say THANKS for helping.
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