Red5 client cleanup ?

gistfile1.txt

private void doCleanUp(IScope scope){
		ConcurrentHashMap<Integer,UserLive> scopeUserList =userList.get(scope.getName());
		for (Iterator<Entry<Integer, UserLive>> iter = scopeUserList.entrySet().iterator(); iter.hasNext(); ) {
		    Map.Entry<Integer, UserLive> entry = iter.next();
		    UserLive value = (UserLive)entry.getValue();
		    
		    Set<IClient> clients  = scope.getClients();
		    Boolean exist = false;
		    for (Iterator<IClient> red5ClientIter = clients.iterator(); iter.hasNext(); ) {
		    	IClient aClient = red5ClientIter.next();
		    	if(aClient.getId().equals(value.uid)){
		    		exist = true;    		
		    	}		    	
		    }
		    
		    if(exist == false)
		    {
		    	iter.remove();		    	
		    }
		    
		}
	}