Writing file through code

Question

Hi,
I want to write data to a file but it gives security error.
AcceccControl Exception file write
I used
FilePermission f=new FilePErmission(String message,"write");
Please send me suggestions.
bye.

Answer 1

Hallo,
From what you say, you are developing an applet. I have not tried to write files from an applet, so it is difficult for me to give you further advice. It may (I do not know for certain) be necessary to set up a FilePermission before starting to write, but it is certainly not sufficient in the mathematical sense. I assume the your message is what you want to write to the file. In this case your proposed code fragment is wrong. According to the API documentation:
public FilePermission(String path,
String actions)
Creates a new FilePermission object with the specified actions. path is the pathname of a file or directory, and actions contains a comma-separated list of the desired actions granted on the file or directory. Possible actions are "read", "write", "execute", and "delete".
A pathname that ends in "/*" (where "/" is the file separator character, File.separatorChar) indicates a directory and all the files contained in that directory. A pathname that ends with "/-" indicates a directory and (recursively) all files and subdirectories contained in that directory. The special pathname "<<ALL FILES>>" matches all files.
A pathname consisting of a single "*" indicates all the files in the current directory, while a pathname consisting of a single "-" indicates all the files in the current directory and (recursively) all files and subdirectories contained in the current directory.
Parameters:
path - the pathname of the file/directory.
actions - the action string.
I do not see anything in this description that says that this function does your writing.