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diff --git a/libjava/classpath/javax/print/attribute/HashAttributeSet.java b/libjava/classpath/javax/print/attribute/HashAttributeSet.java
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+/* HashAttributeSet.java -- 
+   Copyright (C) 2003, 2004  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 javax.print.attribute;
+
+import java.io.Serializable;
+import java.util.HashMap;
+import java.util.Iterator;
+
+public class HashAttributeSet implements AttributeSet, Serializable
+{
+  private static final long serialVersionUID = 5311560590283707917L;
+  
+  private Class interfaceName;
+  private HashMap attributeMap = new HashMap();
+
+  /**
+   * Creates an empty <code>HashAttributeSet</code> object.
+   */
+  public HashAttributeSet()
+  {
+    this(Attribute.class);
+  }
+
+  /**
+   * Creates a <code>HashAttributeSet</code> object with the given
+   * attribute in it.
+   *
+   * @param attribute the attribute to put into the set
+   *
+   * @exception NullPointerException if attribute is null
+   */
+  public HashAttributeSet(Attribute attribute)
+  {
+    this(attribute, Attribute.class);
+  }
+
+  /**
+   * Creates a <code>HashAttributeSet</code> object with the given
+   * attributes in it.
+   *
+   * @param attributes the attributes to put into the set
+   *
+   * @exception NullPointerException If attributes is null
+   */
+  public HashAttributeSet(Attribute[] attributes)
+  {
+    this(attributes, Attribute.class);
+  }
+
+  /**
+   * Creates a <code>HashAttributeSet</code> object with the given
+   * attributes in it.
+   *
+   * @param attributes the attributes to put into the set
+   *
+   * @exception NullPointerException If attributes is null
+   */
+  public HashAttributeSet(AttributeSet attributes)
+  {
+    this(attributes, Attribute.class);
+  }
+
+  /**
+   * Creates an empty <code>HashAttributeSet</code> object.
+   *
+   * @param interfaceName the interface that all members must implement
+   *
+   * @exception NullPointerException if interfaceName is null
+   */
+  protected HashAttributeSet(Class interfaceName)
+  {
+    if (interfaceName == null)
+      throw new NullPointerException("interfaceName may not be null");
+    
+    this.interfaceName = interfaceName;
+  }
+  
+  /**
+   * Creates an empty <code>HashAttributeSet</code> object.
+   *
+   * @exception ClassCastException if attribute is not an interface of
+   * interfaceName
+   * @exception NullPointerException if attribute or interfaceName is null
+   */
+  protected HashAttributeSet(Attribute attribute, Class interfaceName)
+  {
+    this(interfaceName);
+    
+    if (attribute == null)
+      throw new NullPointerException();
+    
+    addInternal(attribute, interfaceName);
+  }
+
+  /**
+   * Creates an empty <code>HashAttributeSet</code> object.
+   *
+   * @exception ClassCastException if any element of attributes is not an
+   * interface of interfaceName
+   * @exception NullPointerException if attributes or interfaceName is null
+   */
+  protected HashAttributeSet(Attribute[] attributes, Class interfaceName)
+  {
+    this(interfaceName);
+    
+    if (attributes == null)
+      throw new NullPointerException();
+    
+    for (int index = 0; index < attributes.length; index++)
+      addInternal(attributes[index], interfaceName);
+  }
+
+  /**
+   * Creates an empty <code>HashAttributeSet</code> object.
+   *
+   * @exception ClassCastException if any element of attributes is not an
+   * interface of interfaceName
+   */
+  protected HashAttributeSet(AttributeSet attributes, Class interfaceName)
+  {
+    this(interfaceName);
+    
+    if (attributes != null)
+      addAllInternal(attributes, interfaceName);
+  }
+
+  /**
+   * Adds the given attribute to the set.
+   *
+   * @param attribute the attribute to add
+   *
+   * @return true if the attribute set has changed, false otherwise
+   *
+   * @exception NullPointerException if attribute is null
+   * @exception UnmodifiableSetException if this attribute set does not
+   * support this action.
+   */
+  public boolean add(Attribute attribute)
+  {
+    return addInternal(attribute, interfaceName);
+  }
+
+  private boolean addInternal(Attribute attribute, Class interfaceName)
+  {
+    if (attribute == null)
+      throw new NullPointerException("attribute may not be null");
+
+    AttributeSetUtilities.verifyAttributeCategory(interfaceName,
+						  this.interfaceName);
+
+    Object old = attributeMap.put
+      (attribute.getCategory(), AttributeSetUtilities.verifyAttributeValue
+                                  (attribute, interfaceName));
+    return !attribute.equals(old);
+  }
+
+  /**
+   * Adds the given attributes to the set.
+   *
+   * @param attributes the attributes to add
+   *
+   * @return true if the attribute set has changed, false otherwise
+   *
+   * @exception UnmodifiableSetException if this attribute set does not
+   * support this action.
+   */
+  public boolean addAll(AttributeSet attributes)
+  {
+    return addAllInternal(attributes, interfaceName);
+  }
+
+  private boolean addAllInternal(AttributeSet attributes, Class interfaceName)
+  {
+    boolean modified = false;
+    Attribute[] array = attributes.toArray();
+
+    for (int index = 0; index < array.length; index++)
+      if (addInternal(array[index], interfaceName))
+        modified = true;
+
+    return modified;
+  }
+
+  /**
+   * Removes all attributes from this attribute set.
+   *
+   * @exception UnmodifiableSetException if this attribute set does not
+   * support this action.
+   */
+  public void clear()
+  {
+    attributeMap.clear();
+  }
+
+  /**
+   * Checks if this attribute set contains an entry with the given category.
+   *
+   * @param category the category to test for
+   *
+   * @return true if the category exists in this attribute set, false otherwise.
+   */
+  public boolean containsKey(Class category)
+  {
+    return attributeMap.containsKey(category);
+  }
+
+  /**
+   * Checks if this attribute set contains an entry with the given attribute.
+   *
+   * @param attribute the attribute to test for
+   *
+   * @return true if the attribute exists in this attribute set,
+   * false otherwise.
+   */
+  public boolean containsValue(Attribute attribute)
+  {
+    return attributeMap.containsValue(attribute);
+  }
+
+  /**
+   * Tests of obj is equal to this object.
+   *
+   * @param obj the object to test
+   *
+   * @return true if both objects are equal, false otherwise.
+   */
+  public boolean equals(Object obj)
+  {
+    if (! (obj instanceof HashAttributeSet))
+      return false;
+
+    return attributeMap.equals(((HashAttributeSet) obj).attributeMap);
+  }
+
+  /**
+   * Returns the attribute value that is connected to the given attribute
+   * category. If the attribute set does not contains the given category null
+   * will be returned.
+   *
+   * @param category the attribute category to return the attribute value for
+   *
+   * @return the attribute associated to category, or null
+   */
+  public Attribute get(Class category)
+  {
+    return (Attribute) attributeMap.get(category);
+  }
+  
+  /**
+   * Returns the hashcode for this object.
+   *
+   * @return the hashcode
+   */
+  public int hashCode()
+  {
+    return attributeMap.hashCode() + interfaceName.hashCode();
+  }
+
+  /**
+   * Checks if the attribute set is empty.
+   *
+   * @return true if the attribute set is empty, false otherwise
+   */
+  public boolean isEmpty()
+  {
+    return attributeMap.isEmpty();
+  }
+
+  /**
+   * Removes the entry with the given attribute in it.
+   *
+   * @param attribute the attribute value of the entry to be removed
+   *
+   * @return true if the attribute set has changed, false otherwise.
+   *
+   * @exception UnmodifiableSetException if this attribute set does not
+   * support this action.
+   */
+  public boolean remove(Attribute attribute)
+  {
+    if (attribute == null)
+      return false;
+
+    return attributeMap.remove(attribute.getCategory()) != null;
+  }
+
+  /**
+   * Removes the entry with the given category in it.
+   *
+   * @param category the category value of the entry to be removed
+   *
+   * @return true if the attribute set has changed, false otherwise.
+   */
+  public boolean remove(Class category)
+  {
+    if (category == null)
+      return false;
+
+    return attributeMap.remove(category) != null;
+  }
+
+  /**
+   * Returns the number of elements in this attribute set.
+   *
+   * @return the number of elements.
+   */
+  public int size()
+  {
+    return attributeMap.size();
+  }
+
+  /**
+   * Returns the content of the attribute set as an array
+   *
+   * @return an array of attributes
+   */
+  public Attribute[] toArray()
+  {
+    int index = 0;
+    Iterator it = attributeMap.entrySet().iterator();
+    Attribute[] array = new Attribute[size()];
+
+    while (it.hasNext())
+      {
+        array[index] = (Attribute) it.next();
+        index++;
+      }
+    
+    return array;
+  }
+}