KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > it > unimi > dsi > fastutil > AbstractPriorityQueue


1 package it.unimi.dsi.fastutil;
2
3 /*
4  * fastutil: Fast & compact type-specific collections for Java
5  *
6  * Copyright (C) 2003, 2004, 2005, 2006 Paolo Boldi and Sebastiano Vigna
7  *
8  * This library is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * This library is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with this library; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21  *
22  */
23
24 import it.unimi.dsi.fastutil.PriorityQueue;
25
26 /** An abstract class providing basic methods for implementing the {@link PriorityQueue} interface.
27  *
28  * <P>This class defines {@link #changed()} and {@link #last()} as throwing an
29  * {@link UnsupportedOperationException}.
30  */
31
32 public abstract class AbstractPriorityQueue<K> implements PriorityQueue<K> {
33
34     public void changed() { throw new UnsupportedOperationException JavaDoc(); }
35
36     public K last() { throw new UnsupportedOperationException JavaDoc(); }
37
38     public boolean isEmpty() { return size() == 0; }
39
40 }
41
Popular Tags