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