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-/* PropertyResourceBundle -- a resource bundle built from a Property file
- Copyright (C) 1998, 1999, 2001, 2002 Free Software Foundation, Inc.
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath 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
-General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-
-package java.util;
-
-import java.io.IOException;
-import java.io.InputStream;
-
-/**
- * This class is a concrete <code>ResourceBundle</code> that gets it
- * resources from a property file. This implies that the resources are
- * strings. For more information about resource bundles see the class
- * <code>ResourceBundle</code>.
- *
- * You should not use this class directly, or subclass it, but you get
- * an object of this class automatically when you call
- * <code>ResourceBundle.getBundle()</code> and there is a properties
- * file.
- *
- * If there is also a class for this resource and the same locale, the
- * class will be chosen. The properties file should have the name of the
- * resource bundle, appended with the locale (e.g. <code>_de</code> and the
- * extension <code>.properties</code>. The file should have the same format
- * as for <code>Properties.load()</code>
- *
- * An example of a properties file for the german language is given
- * here. This extends the example given in ListResourceBundle.
- * Create a file MyResource_de.properties with the following contents
- * and put it in the CLASSPATH. (The char <code>\u00e4</code> is the
- * german umlaut)
- *
- *
-<pre>
-s1=3
-s2=MeineDisk
-s3=3. M\u00e4rz 96
-s4=Die Diskette ''{1}'' enth\u00e4lt {0} in {2}.
-s5=0
-s6=keine Dateien
-s7=1
-s8=eine Datei
-s9=2
-s10={0,number} Dateien
-s11=Die Formatierung warf eine Exception: {0}
-s12=FEHLER
-s13=Ergebnis
-s14=Dialog
-s15=Auswahlkriterium
-s16=1,3
-</pre>
- *
- * @author Jochen Hoenicke
- * @see ResourceBundle
- * @see ListResourceBundle
- * @see Properties#load()
- * @since 1.1
- * @status updated to 1.4
- */
-public class PropertyResourceBundle extends ResourceBundle
-{
- /** The properties file this bundle is based on. */
- private Properties properties;
-
- /**
- * Creates a new property resource bundle.
- *
- * @param stream an input stream, where the resources are read from
- * @throws NullPointerException if stream is null
- * @throws IOException if reading the stream fails
- */
- public PropertyResourceBundle(InputStream stream) throws IOException
- {
- properties = new Properties();
- properties.load(stream);
- }
-
- /**
- * Called by <code>getObject</code> when a resource is needed. This
- * returns the resource given by the key.
- *
- * @param key the key of the resource
- * @return the resource for the key, or null if it doesn't exist
- */
- public Object handleGetObject(String key)
- {
- return properties.getProperty(key);
- }
-
- /**
- * This method should return all keys for which a resource exists.
- *
- * @return an enumeration of the keys
- */
- public Enumeration getKeys()
- {
- if (parent == null)
- return properties.propertyNames();
- // We make a new Set that holds all the keys, then return an enumeration
- // for that. This prevents modifications from ruining the enumeration,
- // as well as ignoring duplicates.
- Set s = new HashSet();
- Enumeration e = properties.propertyNames();
- while (e.hasMoreElements())
- s.add(e.nextElement());
- ResourceBundle bundle = parent;
- // Eliminate tail recursion.
- do
- {
- e = bundle.getKeys();
- while (e.hasMoreElements())
- s.add(e.nextElement());
- bundle = bundle.parent;
- }
- while (bundle != null);
- return Collections.enumeration(s);
- }
-} // class PropertyResourceBundle