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Class UserPrincipalLookupService

 
meeta gaur
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Posts: 305
Notepad Tomcat Server Windows
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Class UserPrincipalLookupService
1.abstract GroupPrincipal lookupPrincipalByGroupName(String group)
Lookup a group principal by group name.

2.abstract UserPrincipal lookupPrincipalByName(String name)
Lookup a user principal by name.

I've implemented second method lookupPrincipalByName() method through Files.get/setOwner() methods, and that means we are getting and setting file owner name but please explain me what is group name in context of a file ,what is use of that ?

Thanks.
http://docs.oracle.com/javase/7/docs/api/java/nio/file/attribute/UserPrincipalLookupService.html
 
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