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diff --git a/libjava/classpath/gnu/javax/swing/text/html/parser/support/gnuStringIntMapper.java b/libjava/classpath/gnu/javax/swing/text/html/parser/support/gnuStringIntMapper.java
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index 000000000..9cdf810dd
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+/* gnuStringIntMapper.java --
+   Copyright (C) 2005 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 gnu.javax.swing.text.html.parser.support;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.TreeMap;
+
+/**
+ * A helper class, mapping between the strings and they unique integer
+ * identifiers.
+ * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
+ */
+public abstract class gnuStringIntMapper
+{
+  /**
+   * Maps argument integer values from DTDConstants into they string
+   * names. Initialized on demand.
+   */
+  private Map is_Map;
+
+  /**
+   * Maps argument string names into they integer values from DTDConstants.
+   * Initialized on demand.
+   */
+  private Map si_Map;
+
+  /**
+   *  Get string from id or null if no such id is present in the mapper.
+   */
+  public final String get(int id)
+  {
+    if (is_Map == null)
+      createTheMap();
+
+    return (String) is_Map.get(new Integer(id));
+  }
+
+  /** Get id from string or 0 if no such string is present in the mapper. */
+  public final int get(String id)
+  {
+    if (si_Map == null)
+      createTheMap();
+
+    Integer i = (Integer) si_Map.get(id);
+
+    return i != null ? i.intValue() : 0;
+  }
+
+  /**
+   * Create the mapping table for this mapper by adding the required
+   * String/int pairs. The method is invoked
+   * only once for each instance, after the first invocation of the any
+   * form of the <code>get</code> method. Use <code>add</code> to
+   * create a map for a concrete instance.
+   */
+  protected abstract void create();
+
+  /**
+   * Add an id/string pair to this mapper. This is called from
+   * the method <code>create</code> only.
+   */
+  protected void add(String name, int id)
+  {
+    Integer i = new Integer(id);
+    si_Map.put(name, i);
+    is_Map.put(i, name);
+  }
+
+  private void createTheMap()
+  {
+    is_Map = new HashMap();
+    si_Map = new TreeMap();
+    create();
+  }
+}