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diff --git a/libjava/classpath/java/awt/event/ComponentEvent.java b/libjava/classpath/java/awt/event/ComponentEvent.java
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+/* ComponentEvent.java -- notification of events for components
+   Copyright (C) 1999, 2002, 2005, 2006  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.awt.event;
+
+import gnu.java.lang.CPStringBuilder;
+
+import java.awt.AWTEvent;
+import java.awt.Component;
+
+/**
+ * This class is for events generated when a component is moved, resized,
+ * hidden, or shown.  These events normally do not need to be handled by the
+ * application, since the AWT system automatically takes care of them. This
+ * is also the superclass for other events on components, but
+ * ComponentListeners ignore such subclasses.
+ *
+ * @author Aaron M. Renn (arenn@urbanophile.com)
+ * @see ComponentAdapter
+ * @see ComponentListener
+ * @since 1.1
+ * @status updated to 1.4
+ */
+public class ComponentEvent extends AWTEvent
+{
+  /**
+   * Compatible with JDK 1.1+.
+   */
+  private static final long serialVersionUID = 8101406823902992965L;
+
+  /** This is the first id in the range of ids used by this class. */
+  public static final int COMPONENT_FIRST = 100;
+
+  /** This is the last id in the range of ids used by this class. */
+  public static final int COMPONENT_LAST = 103;
+
+  /** This id indicates that a component was moved. */
+  public static final int COMPONENT_MOVED = 100;
+
+  /** This id indicates that a component was resized. */
+  public static final int COMPONENT_RESIZED = 101;
+
+  /** This id indicates that a component was shown. */
+  public static final int COMPONENT_SHOWN = 102;
+
+  /** This id indicates that a component was hidden. */
+  public static final int COMPONENT_HIDDEN = 103;
+
+  /**
+   * Initializes a new instance of <code>ComponentEvent</code> with the
+   * specified source and id. Note that an invalid id leads to unspecified
+   * results.
+   *
+   * @param source the source of the event
+   * @param id the event id
+   * @throws IllegalArgumentException if source is null
+   */
+  public ComponentEvent(Component source, int id)
+  {
+    super(source, id);
+  }
+
+  /**
+   * This method returns the event source as a <code>Component</code>. If the
+   * source has subsequently been modified to a non-Component, this returns
+   * null.
+   *
+   * @return the event source as a <code>Component</code>, or null
+   */
+  public Component getComponent()
+  {
+    return source instanceof Component ? (Component) source : null;
+  }
+
+  /**
+   * This method returns a string identifying this event. This is the field
+   * name of the id type, and for COMPONENT_MOVED or COMPONENT_RESIZED, the
+   * new bounding box of the component.
+   *
+   * @return a string identifying this event
+   */
+  public String paramString()
+  {
+    CPStringBuilder s = new CPStringBuilder();
+
+    // Unlike Sun, we don't throw NullPointerException or ClassCastException
+    // when source was illegally changed.
+    if (id == COMPONENT_MOVED)
+      s.append("COMPONENT_MOVED ");
+    else if (id == COMPONENT_RESIZED)
+      s.append("COMPONENT_RESIZED ");
+    else if (id == COMPONENT_SHOWN)
+      s.append("COMPONENT_SHOWN ");
+    else if (id == COMPONENT_HIDDEN)
+      s.append("COMPONENT_HIDDEN ");
+    else
+      return "unknown type";
+
+    s.append("(").append(getComponent().getX()).append(",")
+      .append(getComponent().getY()).append(" ")
+      .append(getComponent().getWidth()).append("x")
+      .append(getComponent().getHeight()).append(")");
+
+    return s.toString();
+  }
+
+} // class ComponentEvent