How can I convert an InputStream to a FileInputStream ???

Question

How can I convert an InputStream to a FileInputStream ???

Answer 1

Thanks for you reply, however, I am still stuck.
I am trying to convert my application (which runs smoothly) to a signed applet. The following is the original (application) code:
private void loadConfig() {
String fileName = "resources/groupconfig";
File name = new File(fileName);
if(name.isFile()) {
try {
     ObjectInputStream in = new ObjectInputStream(new FileInputStream(fileName));
     pAndGConfig = (PAGroupsConfig)in.readObject();
     in.close();
     return;
} catch(ClassNotFoundException e) {
     System.err.println("++ERROR: "+e);
} catch(IOException e) {
     System.err.println("++ERROR: "+e);
System.out.println("Can't find file: " + fileName);
Because all code and resources now reside in a Jar file (for the signed applet), I must use the following line to access the resources:
InputStream is = this.getClass().getResourceAsStream(fileName);
I then need to convert the 'InputStream' to 'ObjectInputStream' or 'FileInputStream' so that I can work with it.
I would be very grateful if you could help shed some light on the matter - Cobram