Citation:
The actions to be granted are passed to the constructor in a string containing a list of one or more comma-separated keywords. The possible keywords are "read", "write", "execute", and "delete". Their meaning is defined as follows:
read : read permission
write : write permission
execute : execute permission. Allows Runtime.exec to be called. Corresponds to SecurityManager.checkExec.
delete : delete permission. Allows File.delete to be called. Corresponds to SecurityManager.checkDelete.
Si tu avais cherché sur la javadoc de sun, tu aurai trouvé ..... :P