1 /*
   2  * Copyright (c) 2000, 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     7065380
  27  * @summary Tests sorting of emptyList and singletonList.
  28  * @author  Mike Duigou
  29  */
  30 
  31 import java.util.Collections;
  32 import java.util.Comparator;
  33 import java.util.List;
  34 
  35 public class SortEmptyAndSingleton {    
  36     static final java.util.Comparator<Integer> COMPARATOR =  new Comparator<Integer>() {
  37             public int compare(Integer one, Integer two) {
  38                 return one - two;
  39             }
  40         };
  41     
  42     public static void main(String[] args) throws Exception {
  43         List<Integer> empty = Collections.<Integer>emptyList();
  44         Collections.sort(empty);               
  45         Collections.sort(empty,COMPARATOR);
  46         
  47         // 7065380
  48         List<Integer> single = Collections.<Integer>singletonList(0);
  49         Collections.sort(single);
  50         Collections.sort(single,COMPARATOR);
  51     }
  52 }