Java tutorial
//package com.java2s; /* * Copyright (C) 2013 Marcius da Silva da Fonseca. * * This library 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 2.1 of the License, or (at your option) any later version. * * This library 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 this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301 USA */ import java.util.Collections; import java.util.Comparator; import java.util.List; public class Main { public static <T extends Object> int binarySearch(final List<? extends Comparable<? super T>> list, final T element) { return Collections.binarySearch(list, element); } public static <T extends Object> int binarySearch(final List<? extends T> list, final T element, final Comparator<? super T> comparator) { return Collections.binarySearch(list, element, comparator); } }