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Java > Open Source Codes > org > apache > geronimo > util > asn1 > ASN1Null


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 JavaDoc;
21
22 /**
23  * A NULL object.
24  */
25 public abstract class ASN1Null
26     extends DERObject
27 {
28     public ASN1Null()
29     {
30     }
31
32     public int hashCode()
33     {
34         return 0;
35     }
36
37     public boolean equals(
38         Object JavaDoc o)
39     {
40         if ((o == null) || !(o instanceof ASN1Null))
41         {
42             return false;
43         }
44
45         return true;
46     }
47
48     abstract void encode(DEROutputStream out)
49         throws IOException JavaDoc;
50 }
51
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