001 /* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
006 *
007 * Project Info: http://www.jfree.org/jfreechart/index.html
008 *
009 * This library is free software; you can redistribute it and/or modify it
010 * under the terms of the GNU Lesser General Public License as published by
011 * the Free Software Foundation; either version 2.1 of the License, or
012 * (at your option) any later version.
013 *
014 * This library is distributed in the hope that it will be useful, but
015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
017 * License for more details.
018 *
019 * You should have received a copy of the GNU Lesser General Public
020 * License along with this library; if not, write to the Free Software
021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
022 * USA.
023 *
024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
025 * in the United States and other countries.]
026 *
027 * -----------------
028 * URLUtilities.java
029 * -----------------
030 * (C) Copyright 2007, by Object Refinery Limited.
031 *
032 * Original Author: David Gilbert (for Object Refinery Limited);
033 * Contributors: -;
034 *
035 * $Id: URLUtilities.java,v 1.1.2.1 2007/04/17 16:05:27 mungady Exp $
036 *
037 * Changes:
038 * --------
039 * 17-Apr-2007 : Version 1 (DG);
040 *
041 */
042
043 package org.jfree.chart.urls;
044
045 import java.lang.reflect.InvocationTargetException;
046 import java.lang.reflect.Method;
047 import java.net.URLEncoder;
048
049 /**
050 * General utility methods for URLs.
051 *
052 * @since 1.0.6
053 */
054 public class URLUtilities {
055
056 /** Constant used by {@link #encode(String, String)}. */
057 private static final Class[] STRING_ARGS_2 = new Class[] {String.class,
058 String.class};
059
060 /**
061 * Calls <code>java.net.URLEncoder.encode(String, String)</code> via
062 * reflection, if we are running on JRE 1.4 or later, otherwise reverts to
063 * the deprecated <code>URLEncoder.encode(String)</code> method.
064 *
065 * @param s the string to encode.
066 * @param encoding the encoding.
067 *
068 * @return The encoded string.
069 *
070 * @since 1.0.6
071 */
072 public static String encode(String s, String encoding) {
073 Class c = URLEncoder.class;
074 String result = null;
075 try {
076 Method m = c.getDeclaredMethod("encode", STRING_ARGS_2);
077 try {
078 result = (String) m.invoke(null, new Object[] {s, encoding});
079 }
080 catch (InvocationTargetException e) {
081 e.printStackTrace();
082 }
083 catch (IllegalAccessException e) {
084 e.printStackTrace();
085 }
086 }
087 catch (NoSuchMethodException e) {
088 // we're running on JRE 1.3.1 so this is the best we have...
089 result = URLEncoder.encode(s);
090 }
091 return result;
092 }
093
094 }