The format for specifying the location of the PAC file depends upon it’s location as follows:
If the PAC file resides on a Web server, the PAC URL is:
http://hostname/pacfile_name.pac
If the pacfile is a local file (for example, c:\\pacfile\\sample.pac), for Java 1.4.1_x, enter the PAC URL as:
file://c:/pacfile/sample.pac
If the PAC file is a local file (for example, c:\\pacfile\\sample.pac), for Java 1.4.2_x, enter the PAC URL as:
file:///c:/pacfile/sample.pac