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Java > Open Source Codes > org > apache > servicemix > jbi > util > FastStack


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 package org.apache.servicemix.jbi.util;
18
19 import java.util.ArrayList JavaDoc;
20
21 public class FastStack extends ArrayList JavaDoc {
22     
23     public void push(Object JavaDoc o) {
24         add(o);
25     }
26
27     public Object JavaDoc pop() {
28         return remove(size() - 1);
29     }
30
31     public boolean empty() {
32         return size() == 0;
33     }
34
35     public Object JavaDoc peek() {
36         return get(size() - 1);
37     }
38 }
39
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