Here you can find the source of unwrapList(SortedMap
public static <K, V> List<V> unwrapList(SortedMap<K, V> sortedMap, K fromKey)
//package com.java2s; /**//from w w w.j av a2 s. c o m * Copyright (C) 2010 Cubeia Ltd <info@cubeia.com> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.util.ArrayList; import java.util.List; import java.util.SortedMap; public class Main { public static <K, V> List<V> unwrapList(SortedMap<K, V> sortedMap, K fromKey) { List<V> list = new ArrayList<V>(); list.addAll(sortedMap.tailMap(fromKey).values()); list.addAll(sortedMap.headMap(fromKey).values()); return list; } }