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JFreeChart is a class library, written in Java, for generating charts.
Utilising the Java2D APIs, it currently supports bar charts, pie charts,
line charts, XY-plots and time series plots.
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2013, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* -----------------
* URLUtilities.java
* -----------------
* (C) Copyright 2007, 2008, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributors: -;
*
* Changes:
* --------
* 17-Apr-2007 : Version 1 (DG);
*
*/
package org.jfree.chart.urls;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.URLEncoder;
/**
* General utility methods for URLs.
*
* @since 1.0.6
*/
public class URLUtilities {
/** Constant used by {@link #encode(String, String)}. */
private static final Class[] STRING_ARGS_2 = new Class[] {String.class,
String.class};
/**
* Calls java.net.URLEncoder.encode(String, String) via
* reflection, if we are running on JRE 1.4 or later, otherwise reverts to
* the deprecated URLEncoder.encode(String) method.
*
* @param s the string to encode.
* @param encoding the encoding.
*
* @return The encoded string.
*
* @since 1.0.6
*/
public static String encode(String s, String encoding) {
Class c = URLEncoder.class;
String result = null;
try {
Method m = c.getDeclaredMethod("encode", STRING_ARGS_2);
try {
result = (String) m.invoke(null, new Object[] {s, encoding});
}
catch (InvocationTargetException e) {
e.printStackTrace();
}
catch (IllegalAccessException e) {
e.printStackTrace();
}
}
catch (NoSuchMethodException e) {
// we're running on JRE 1.3.1 so this is the best we have...
result = URLEncoder.encode(s);
}
return result;
}
}