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1   /*
2    * ====================================================================
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *   http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing,
14   * software distributed under the License is distributed on an
15   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16   * KIND, either express or implied.  See the License for the
17   * specific language governing permissions and limitations
18   * under the License.
19   * ====================================================================
20   *
21   * This software consists of voluntary contributions made by many
22   * individuals on behalf of the Apache Software Foundation.  For more
23   * information on the Apache Software Foundation, please see
24   * <http://www.apache.org/>.
25   *
26   */
27  
28  package org.apache.http;
29  
30  import java.util.Iterator;
31  
32  /**
33   * A type-safe iterator for {@link Header} objects.
34   *
35   * @since 4.0
36   */
37  public interface HeaderIterator extends Iterator<Object> {
38  
39      /**
40       * Indicates whether there is another header in this iteration.
41       *
42       * @return  <code>true</code> if there is another header,
43       *          <code>false</code> otherwise
44       */
45      @Override
46      boolean hasNext();
47  
48      /**
49       * Obtains the next header from this iteration.
50       * This method should only be called while {@link #hasNext hasNext}
51       * is true.
52       *
53       * @return  the next header in this iteration
54       */
55      Header nextHeader();
56  
57  }