DERNull


1   /**
2    *  Licensed to the Apache Software Foundation (ASF) under one or more
3    *  contributor license agreements.  See the NOTICE file distributed with
4    *  this work for additional information regarding copyright ownership.
5    *  The ASF licenses this file to You under the Apache License, Version 2.0
6    *  (the "License"); you may not use this file except in compliance with
7    *  the License.  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   *  Unless required by applicable law or agreed to in writing, software
12   *  distributed under the License is distributed on an "AS IS" BASIS,
13   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   *  See the License for the specific language governing permissions and
15   *  limitations under the License.
16   */
17  
18  package org.apache.geronimo.util.asn1;
19  
20  import java.io.IOException  ;
21  
22  /**
23   * A NULL object.
24   */
25  public class DERNull
26      extends ASN1Null
27  {
28      byte[]  zeroBytes = new byte[0];
29  
30      public DERNull()
31      {
32      }
33  
34      void encode(
35          DEROutputStream  out)
36          throws IOException  
37      {
38          out.writeEncoded(NULL, zeroBytes);
39      }
40  
41      public boolean equals(
42          Object   o)
43      {
44          if ((o == null) || !(o instanceof DERNull))
45          {
46              return false;
47          }
48  
49          return true;
50      }
51  
52      public int hashCode()
53      {
54          return 0;
55      }
56  }
57

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