Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
WebUtils |
|
| 2.5;2.5 |
1 | // Copyright 2005 The Apache Software Foundation | |
2 | // | |
3 | // Licensed under the Apache License, Version 2.0 (the "License"); | |
4 | // you may not use this file except in compliance with the License. | |
5 | // You may obtain a copy of the License at | |
6 | // | |
7 | // http://www.apache.org/licenses/LICENSE-2.0 | |
8 | // | |
9 | // Unless required by applicable law or agreed to in writing, software | |
10 | // distributed under the License is distributed on an "AS IS" BASIS, | |
11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 | // See the License for the specific language governing permissions and | |
13 | // limitations under the License. | |
14 | ||
15 | package org.apache.tapestry.web; | |
16 | ||
17 | import java.util.ArrayList; | |
18 | import java.util.Collections; | |
19 | import java.util.Enumeration; | |
20 | import java.util.List; | |
21 | ||
22 | import org.apache.hivemind.util.Defense; | |
23 | ||
24 | /** | |
25 | * @author Howard M. Lewis Ship | |
26 | * @since 4.0 | |
27 | */ | |
28 | public final class WebUtils | |
29 | { | |
30 | /* defeat instantiation */ | |
31 | 0 | private WebUtils() { } |
32 | ||
33 | /** | |
34 | * Converts an Enumeration of Strings into an unmodifiable List of Strings, sorted into | |
35 | * ascending order. | |
36 | */ | |
37 | ||
38 | public static List toSortedList(Enumeration e) | |
39 | { | |
40 | 0 | Defense.notNull(e, "e"); |
41 | ||
42 | 0 | List list = new ArrayList(); |
43 | 0 | while (e.hasMoreElements()) |
44 | 0 | list.add(e.nextElement()); |
45 | ||
46 | 0 | if (list.isEmpty()) |
47 | 0 | return Collections.EMPTY_LIST; |
48 | ||
49 | 0 | Collections.sort(list); |
50 | ||
51 | 0 | return Collections.unmodifiableList(list); |
52 | } | |
53 | ||
54 | } |