import java.io.*;
import java.security.*;
import java.security.acl.*;
import java.util.*;

import com.sun.server.realm.*;
import com.sun.server.realm.util.*;


public interface GroupEntity
{
	public Enumeration getGroupNames() throws BadRealmException;
	public Group getGroup(String name) throws NoSuchGroupException, BadRealmException;

	public Group addGroup(String name) throws InUseException, BadRealmException;
	public boolean remove(String name) throws InUseException, BadRealmException, NoSuchGroupException;
}