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 

30 import java.util.ArrayList;
31 import java.util.Arrays;
32 import java.util.Collections;
33 import java.util.List;
34 
35 public class NullComparator {

36     public static void main(String[] args) throws Exception {
37         List list = new ArrayList(100);
38         for (int i=0; i<100; i++)
39             list.add(new Integer(i));
40         List sorted = new ArrayList(list);
41         Collections.shuffle(list);
42 
43         Object[] a = list.toArray();
44         Arrays.sort(a, null);
45         if (!Arrays.asList(a).equals(sorted))
46             throw new Exception("Arrays.sort");
47         a = list.toArray();
48         Arrays.sort(a, 0, 100, null);
49         if (!Arrays.asList(a).equals(sorted))
50             throw new Exception("Arrays.sort(from, to)");
51         if (Arrays.binarySearch(a, new Integer(69)) != 69)
52             throw new Exception("Arrays.binarySearch");
53 
54         List tmp = new ArrayList(list);
55         Collections.sort(tmp, null);
56         if (!tmp.equals(sorted))
57             throw new Exception("Collections.sort");
58         if (Collections.binarySearch(tmp, new Integer(69)) != 69)
59             throw new Exception("Collections.binarySearch");
60         if (!Collections.min(list, null).equals(new Integer(0)))
61             throw new Exception("Collections.min");
62         if (!Collections.max(list, null).equals(new Integer(99)))
63             throw new Exception("Collections.max");













64     }
65 }
--- EOF ---