Here you can find the source of maxInnerSize(List> listOfLists)
private static <E> int maxInnerSize(List<List<E>> listOfLists)
//package com.java2s; /*// w w w . jav a2 s.c o m Copyright 2009 Semantic Discovery, Inc. (www.semanticdiscovery.com) This file is part of the Semantic Discovery Toolkit. The Semantic Discovery Toolkit is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. The Semantic Discovery Toolkit 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with The Semantic Discovery Toolkit. If not, see <http://www.gnu.org/licenses/>. */ import java.util.List; import java.util.Iterator; public class Main { /** * Find the maximum size of the inner lists. */ private static <E> int maxInnerSize(List<List<E>> listOfLists) { int result = 0; for (Iterator<List<E>> it = listOfLists.iterator(); it.hasNext();) { List<E> list = it.next(); int size = list.size(); result = (size > result) ? size : result; } return result; } }