KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > net > sf > jga > fn > BinaryPredicate


1 // ============================================================================
2
// $Id: BinaryPredicate.java,v 1.8 2006/02/10 04:36:08 davidahall Exp $
3
// Copyright (c) 2002-2005 David A. Hall
4
// ============================================================================
5
// The contents of this file are subject to the Common Development and
6
// Distribution License (CDDL), Version 1.0 (the License); you may not use this
7
// file except in compliance with the License. You should have received a copy
8
// of the the License along with this file: if not, a copy of the License is
9
// available from Sun Microsystems, Inc.
10
//
11
// http://www.sun.com/cddl/cddl.html
12
//
13
// From time to time, the license steward (initially Sun Microsystems, Inc.) may
14
// publish revised and/or new versions of the License. You may not use,
15
// distribute, or otherwise make this file available under subsequent versions
16
// of the License.
17
//
18
// Alternatively, the contents of this file may be used under the terms of the
19
// GNU Lesser General Public License Version 2.1 or later (the "LGPL"), in which
20
// case the provisions of the LGPL are applicable instead of those above. If you
21
// wish to allow use of your version of this file only under the terms of the
22
// LGPL, and not to allow others to use your version of this file under the
23
// terms of the CDDL, indicate your decision by deleting the provisions above
24
// and replace them with the notice and other provisions required by the LGPL.
25
// If you do not delete the provisions above, a recipient may use your version
26
// of this file under the terms of either the CDDL or the LGPL.
27
//
28
// This library is distributed in the hope that it will be useful,
29
// but WITHOUT ANY WARRANTY; without even the implied warranty of
30
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
31
// ============================================================================
32

33 package net.sf.jga.fn;
34
35 import java.io.Serializable JavaDoc;
36
37 /**
38  * A Predicate that takes two arguments and returns a boolean result. The two
39  * arguments are of type <code>T1</code> and <code>T2</code>
40  * <p>
41  * Copyright &copy; 2002-2005 David A. Hall
42  * @author <a HREF="mailto:davidahall@users.sourceforge.net">David A. Hall</a>
43  * @deprecated not all functors that return boolean are predicates, but all predicates
44  * are functors that return boolean. In most cases where it matters, it is better to
45  * specify a boolean functor rather than a predicate.
46  **/

47
48 abstract public class BinaryPredicate<T1,T2>
49     extends BinaryFunctor<T1,T2,Boolean JavaDoc>
50 {
51     /**
52      * Evaluates the predicate and returns true or false.
53      */

54     public boolean p(T1 arg1, T2 arg2) { return fn(arg1, arg2); }
55 }
56
57
Popular Tags