reading data file on any network device from java applet?

Question

how can java applets read data file from any device which is in same network with client computer

is it possible with signed applets or with any security policy ?

Answer 1

http://www.roseindia.net/java/example/java/applet/readFileApplet.shtml

here i found a sample application exactly what i want thanks for all answers so there is no need to sign applet because they can read data where they are originated from :)