TimeZoneComparator


1   /*
2   * Licensed to the Apache Software Foundation (ASF) under one or more
3   *  contributor license agreements.  The ASF licenses this file to You
4   * under the Apache License, Version 2.0 (the "License"); you may not
5   * use this file except in compliance with the License.
6   * You may obtain a copy of the License at
7   *
8   *     http://www.apache.org/licenses/LICENSE-2.0
9   *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.  For additional information regarding
15  * copyright in this work, please see the NOTICE file in the top level
16  * directory of this distribution.
17  */
18  package org.apache.roller.util;
19  import java.util.TimeZone  ;
20  import java.util.Comparator  ;
21  import java.io.Serializable  ;
22  
23  public class TimeZoneComparator implements Comparator  , Serializable  
24  {
25      public int compare(Object   obj1, Object   obj2)
26      {
27          if (obj1 instanceof TimeZone   && obj2 instanceof TimeZone  )
28          {
29              TimeZone   zone1 = (TimeZone  )obj1;
30              TimeZone   zone2 = (TimeZone  )obj2;
31              int compName = zone1.getDisplayName().compareTo(zone2.getDisplayName());
32              if (compName == 0)
33              {
34                  return zone1.getID().compareTo(zone2.getID());
35              }
36              return compName;
37          }
38          return 0;
39      }
40  
41      /* Do Comparators need to implement equals()? -Lance
42      public boolean equals(Object obj)
43      {
44          if (obj instanceof TimeZoneComparator)
45          {
46              if (obj.equals(this)) return true;
47          }
48          return false;
49      }
50      */
51  }
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