File类

e901. getting the file-type icon of a file.txt

e182. creating a shared file lock on a file.txt

e455. retrieving a compressed file from a zip file

e292. loading a flat file to a mysql table.txt

e383. writing a jar file manifest to a file.txt

e888. displaying only directories in a file choose

e027. forcing updates to a file to the disk.txt

e384. creating and signing a jar file using jarsig

e294. loading a flat file to an oracle table.txt

reading and writing a properties file(from sun).tx