1/* 2 * Copyright (c) 1999, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/** 25 * @test 26 * @bug 4224271 27 * @summary A null Comparator is now specified to indicate natural ordering. 28 */ 29 30import java.util.*; 31 32public class NullComparator { 33 public static void main(String[] args) throws Exception { 34 List list = new ArrayList(100); 35 for (int i=0; i<100; i++) 36 list.add(new Integer(i)); 37 List sorted = new ArrayList(list); 38 Collections.shuffle(list); 39 40 Object a[] = list.toArray(); 41 Arrays.sort(a, null); 42 if (!Arrays.asList(a).equals(sorted)) 43 throw new Exception("Arrays.sort"); 44 a = list.toArray(); 45 Arrays.sort(a, 0, 100, null); 46 if (!Arrays.asList(a).equals(sorted)) 47 throw new Exception("Arrays.sort(from, to)"); 48 if (Arrays.binarySearch(a, new Integer(69)) != 69) 49 throw new Exception("Arrays.binarySearch"); 50 51 List tmp = new ArrayList(list); 52 Collections.sort(tmp, null); 53 if (!tmp.equals(sorted)) 54 throw new Exception("Collections.sort"); 55 if (Collections.binarySearch(tmp, new Integer(69)) != 69) 56 throw new Exception("Collections.binarySearch"); 57 if (!Collections.min(list, null).equals(new Integer(0))) 58 throw new Exception("Collections.min"); 59 if (!Collections.max(list, null).equals(new Integer(99))) 60 throw new Exception("Collections.max"); 61 } 62} 63