Java AclFileAttributeView get permission and entry

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.attribute.AclEntry;
import java.nio.file.attribute.AclEntryFlag;
import java.nio.file.attribute.AclEntryPermission;
import java.nio.file.attribute.AclFileAttributeView;
import java.util.List;
import java.util.Set;

public class Main {

   public static void main(String[] args) {
      Path path = Paths.get("Main.java");
      try {//from w w  w.java  2  s  .  co  m
         AclFileAttributeView view = Files.getFileAttributeView(path, AclFileAttributeView.class);
         List<AclEntry> aclEntryList = view.getAcl();
         for (AclEntry entry : aclEntryList) {
            System.out.println("User Principal Name: " + entry.principal().getName());
            System.out.println("ACL Entry Type: " + entry.type());
            displayEntryFlags(entry.flags());
            displayPermissions(entry.permissions());
            System.out.println();
         }
      } catch (IOException e) {
         e.printStackTrace();
      }

   }

   private static void displayPermissions(Set<AclEntryPermission> permissionSet) {
      if (permissionSet.isEmpty()) {
         System.out.println("No Permissions present");
      } else {
         System.out.println("Permissions");
         for (AclEntryPermission permission : permissionSet) {
            System.out.print(permission.name() + " ");
         }
         System.out.println();
      }
   }

   private static void displayEntryFlags(Set<AclEntryFlag> flagSet) {
      if (flagSet.isEmpty()) {
         System.out.println("No ACL Entry Flags present");
      } else {
         System.out.println("ACL Entry Flags");
         for (AclEntryFlag flag : flagSet) {
            System.out.print(flag.name() + " ");
         }
         System.out.println();
      }
   }
}