ArrayListStack


1   /*
2    * The contents of this file are subject to the terms of the Common Development
3    * and Distribution License (the License). You may not use this file except in
4    * compliance with the License.
5    *
6    * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7    * or http://www.netbeans.org/cddl.txt.
8    *
9    * When distributing Covered Code, include this CDDL Header Notice in each file
10   * and include the License file at http://www.netbeans.org/cddl.txt.
11   * If applicable, add the following below the CDDL Header, with the fields
12   * enclosed by brackets [] replaced by your own identifying information:
13   * "Portions Copyrighted [year] [name of copyright owner]"
14   *
15   * The Original Software is NetBeans. The Initial Developer of the Original
16   * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
17   * Microsystems, Inc. All Rights Reserved.
18   */
19  
20  package org.netbeans.modules.dbschema.migration.archiver.deserializer;
21  
22  import java.util.ArrayList  ;
23  import java.util.EmptyStackException  ;
24  
25  //@olsen+MBO: local class providing an unsynchronized Stack
26  class ArrayListStack extends ArrayList   {
27      public ArrayListStack() {
28      }
29  
30      public Object   push(Object   item) {
31      add(item);
32      return item;
33      }
34  
35      public Object   pop() {
36      Object    obj;
37      int len = size();
38  
39      obj = remove(len - 1);
40      return obj;
41      }
42  
43      public Object   peek() {
44      int len = size();
45  
46      if (len == 0)
47          throw new EmptyStackException  ();
48      return get(len - 1);
49      }
50  
51      public boolean empty() {
52      return size() == 0;
53      }
54  
55      public int search(Object   o) {
56      int i = lastIndexOf(o);
57  
58      if (i >= 0) {
59          return size() - i;
60      }
61      return -1;
62      }
63  }
64

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