What Does Java Access Control List (Java ACL) Mean?A Java access control list (ACL) is a data structure that grants or denies permission to access resources based on its object entries. The ACL is independent of authentication or encryption schemes, as well as other guarded resources. A typical ACL entry includes a principal or group object, associated permission objects and a positive or negative value. The entry must have a positive value to allow the principal object to perform the action.
The java.security.acl package contains all interfaces required to implement the Java ACL, while the sun.security.acl data structure specifies the default java.security.acl package implementation. The Java ACL principal or group object is a human or system process, and the permission object is a user-allowed operation.