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Java > Open Source Codes > org > apache > tomcat > util > collections > EmptyEnumeration


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.tomcat.util.collections;
19
20 import java.util.Enumeration JavaDoc;
21 import java.util.NoSuchElementException JavaDoc;
22
23 public class EmptyEnumeration implements Enumeration JavaDoc {
24
25     static EmptyEnumeration staticInstance=new EmptyEnumeration();
26
27     public EmptyEnumeration() {
28     }
29
30     public static Enumeration JavaDoc getEmptyEnumeration() {
31     return staticInstance;
32     }
33     
34     public Object JavaDoc nextElement( ) {
35     throw new NoSuchElementException JavaDoc( "EmptyEnumeration");
36     }
37
38     public boolean hasMoreElements() {
39     return false;
40     }
41     
42 }
43
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