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Java > Open Source Codes > org > jfree > util > StringUtils


1 /* ========================================================================
2  * JCommon : a free general purpose class library for the Java(tm) platform
3  * ========================================================================
4  *
5  * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
6  *
7  * Project Info: http://www.jfree.org/jcommon/index.html
8  *
9  * This library is free software; you can redistribute it and/or modify it
10  * under the terms of the GNU Lesser General Public License as published by
11  * the Free Software Foundation; either version 2.1 of the License, or
12  * (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful, but
15  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
17  * License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with this library; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
22  * USA.
23  *
24  * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
25  * in the United States and other countries.]
26  *
27  * ----------------
28  * StringUtils.java
29  * ----------------
30  * (C)opyright 2003, 2004, by Thomas Morgner and Contributors.
31  *
32  * Original Author: Thomas Morgner;
33  * Contributor(s): David Gilbert (for Object Refinery Limited);
34  *
35  * $Id: StringUtils.java,v 1.5 2005/10/18 13:24:19 mungady Exp $
36  *
37  * Changes
38  * -------------------------
39  * 21.06.2003 : Initial version
40  *
41  */
42
43 package org.jfree.util;
44
45 /**
46  * String utilities.
47  *
48  * @author Thomas Morgner.
49  */
50 public class StringUtils {
51
52     /**
53      * Private constructor prevents object creation.
54      */
55     private StringUtils() {
56     }
57
58     /**
59      * Helper functions to query a strings start portion. The comparison is case insensitive.
60      *
61      * @param base the base string.
62      * @param start the starting text.
63      *
64      * @return true, if the string starts with the given starting text.
65      */
66     public static boolean startsWithIgnoreCase(final String JavaDoc base, final String JavaDoc start) {
67         if (base.length() < start.length()) {
68             return false;
69         }
70         return base.regionMatches(true, 0, start, 0, start.length());
71     }
72
73     /**
74      * Helper functions to query a strings end portion. The comparison is case insensitive.
75      *
76      * @param base the base string.
77      * @param end the ending text.
78      *
79      * @return true, if the string ends with the given ending text.
80      */
81     public static boolean endsWithIgnoreCase(final String JavaDoc base, final String JavaDoc end) {
82         if (base.length() < end.length()) {
83             return false;
84         }
85         return base.regionMatches(true, base.length() - end.length(), end, 0, end.length());
86     }
87
88     /**
89      * Queries the system properties for the line separator. If access
90      * to the System properties is forbidden, the UNIX default is returned.
91      *
92      * @return the line separator.
93      */
94     public static String JavaDoc getLineSeparator() {
95         try {
96             return System.getProperty("line.separator", "\n");
97         }
98         catch (Exception JavaDoc e) {
99             return "\n";
100         }
101     }
102
103
104 }
105
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