1 /*
2 The TauP Toolkit: Flexible Seismic Travel-Time and Raypath Utilities.
3 Copyright (C) 1998-2000 University of South Carolina
4
5 This program is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License
7 as published by the Free Software Foundation; either version 2
8 of the License, or (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18
19 The current version can be found at
20 <A HREF="www.seis.sc.edu">http://www.seis.sc.edu</A>
21
22 Bug reports and comments should be directed to
23 H. Philip Crotwell, crotwell@seis.sc.edu or
24 Tom Owens, owens@seis.sc.edu
25
26 */
27
28 package edu.sc.seis.TauP;
29
30 /*** utility class for checking assertions. The methods simply throw an
31 * IllegalArguementException if the assertion is not met.
32 *
33 * @version 1.1.3 Wed Jul 18 15:00:35 GMT 2001
34
35
36
37 */
38 public class Assert {
39
40 public static void isTrue(boolean b, String s)
41 throws IllegalArgumentException {
42 if (b == false) {
43 throw new IllegalArgumentException(s);
44 }
45 }
46
47 public static void isFalse(boolean b, String s)
48 throws IllegalArgumentException {
49 isTrue(! b, s);
50 }
51
52 public static void isNotNull(Object o, String s)
53 throws IllegalArgumentException {
54 if (o == null) {
55 throw new IllegalArgumentException(s);
56 }
57 }
58 }