public interface AclEntry extends Cloneable
 An ACL can be thought of as a data structure with multiple ACL entry
 objects. Each ACL entry object contains a set of permissions associated
 with a particular principal. (A principal represents an entity such as
 an individual user or a group). Additionally, each ACL entry is specified
 as being either positive or negative. If positive, the permissions are
 to be granted to the associated principal. If negative, the permissions
 are to be denied. Each principal can have at most one positive ACL entry
 and one negative entry; that is, multiple positive or negative ACL
 entries are not allowed for any principal.
 Note: ACL entries are by default positive. An entry becomes a
 negative entry only if the
 setNegativePermissions
 method is called on it.
Acl| Modifier and Type | Method and Description | 
|---|---|
| boolean | addPermission(Permission permission)Adds the specified permission to this ACL entry. | 
| boolean | checkPermission(Permission permission)Checks if the specified permission is part of the
 permission set in this entry. | 
| Object | clone()Clones this ACL entry. | 
| Principal | getPrincipal()Returns the principal for which permissions are granted or denied by
 this ACL entry. | 
| boolean | isNegative()Returns true if this is a negative ACL entry (one denying the
 associated principal the set of permissions in the entry), false
 otherwise. | 
| Enumeration<Permission> | permissions()Returns an enumeration of the permissions in this ACL entry. | 
| boolean | removePermission(Permission permission)Removes the specified permission from this ACL entry. | 
| void | setNegativePermissions()Sets this ACL entry to be a negative one. | 
| boolean | setPrincipal(Principal user)Specifies the principal for which permissions are granted or denied
 by this ACL entry. | 
| String | toString()Returns a string representation of the contents of this ACL entry. | 
boolean setPrincipal(Principal user)
user - the principal to be set for this entry.getPrincipal()Principal getPrincipal()
setPrincipal(java.security.Principal)void setNegativePermissions()
setNegativePermissions
 method is called on it.boolean isNegative()
boolean addPermission(Permission permission)
permission - the permission to be associated with
 the principal in this entry.boolean removePermission(Permission permission)
permission - the permission to be removed from this entry.boolean checkPermission(Permission permission)
permission - the permission to be checked for.Enumeration<Permission> permissions()
String toString()
Object clone()
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