01: /*
02: * %W% %E%
03: *
04: * Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
05: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU General Public License version
09: * 2 only, as published by the Free Software Foundation.
10: *
11: * This program is distributed in the hope that it will be useful, but
12: * WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * General Public License version 2 for more details (a copy is
15: * included at /legal/license.txt).
16: *
17: * You should have received a copy of the GNU General Public License
18: * version 2 along with this work; if not, write to the Free Software
19: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA
21: *
22: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
23: * Clara, CA 95054 or visit www.sun.com if you need additional
24: * information or have any questions.
25: */
26:
27: package com.sun.jump.module.eventqueue;
28:
29: import com.sun.jump.module.JUMPModuleFactory;
30:
31: /**
32: * <code>JUMPEventQueueModuleFactory</code> is a factory for
33: * <code>JUMPEventQueueModule</code>.
34: */
35: public abstract class JUMPEventQueueModuleFactory extends
36: JUMPModuleFactory {
37: /** The only instance of this factory. */
38: private static JUMPEventQueueModuleFactory INSTANCE = null;
39:
40: /**
41: * Returns a <code>JUMPEventQueueModuleFactory</code> instance.
42: */
43: public static JUMPEventQueueModuleFactory getInstance() {
44: return INSTANCE;
45: }
46:
47: /**
48: * Creates a new instance of <code>JUMPEventQueueModuleFactory</code>.
49: */
50: protected JUMPEventQueueModuleFactory() {
51: synchronized (JUMPEventQueueModuleFactory.class) {
52: if (INSTANCE == null) {
53: INSTANCE = this ;
54: }
55: }
56: }
57:
58: /**
59: * Returns a <code>JUMPEventQueueModule</code>.
60: */
61: public abstract JUMPEventQueueModule getModule();
62: }
|