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diff --git a/libjava/classpath/java/awt/event/MouseWheelEvent.java b/libjava/classpath/java/awt/event/MouseWheelEvent.java
new file mode 100644
index 000000000..1ca946582
--- /dev/null
+++ b/libjava/classpath/java/awt/event/MouseWheelEvent.java
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+/* MouseWheelEvent.java -- a mouse wheel event
+   Copyright (C) 2002, 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 java.awt.event;
+
+import java.awt.Adjustable;
+import java.awt.Component;
+import java.awt.Rectangle;
+import java.awt.ScrollPane;
+
+import javax.swing.JScrollPane;
+import javax.swing.Scrollable;
+
+/**
+ * This event is generated for a mouse wheel rotation. The wheel (the middle
+ * mouse button on most modern mice) can be rotated towards or away from the
+ * user, and is often used for scrolling.
+ *
+ * <p>Because of the special use for scrolling components, MouseWheelEvents
+ * often affect a different component than the one located at the point of
+ * the event. If the component under the mouse cursor does not accept wheel
+ * events, the event is passed to the first ancestor container which does. This
+ * is often a ScrollPane, which knows how to scroll. If an AWT component is
+ * built from a native widget that knows how to use mouse wheel events, that
+ * component will consume the event.
+ *
+ * <p>The two most common scroll types are "units" (lines at a time) or
+ * "blocks" (pages at a time). The initial setting is taken from the platform,
+ * although the user can adjust the setting at any time.
+ *
+ * @author Eric Blake (ebb9@email.byu.edu)
+ * @see MouseWheelListener
+ * @see ScrollPane
+ * @see ScrollPane#setWheelScrollingEnabled(boolean)
+ * @see JScrollPane
+ * @see JScrollPane#setWheelScrollingEnabled(boolean)
+ * @since 1.4
+ * @status updated to 1.4
+ */
+public class MouseWheelEvent extends MouseEvent
+{
+  /**
+   * Compatible with JDK 1.4+.
+   */
+  private static final long serialVersionUID = 6459879390515399677L;
+
+  /**
+   * Indicates scrolling by units (lines).
+   *
+   * @see #getScrollType()
+   */
+  public static final int WHEEL_UNIT_SCROLL = 0;
+
+  /**
+   * Indicates scrolling by blocks (pages).
+   *
+   * @see #getScrollType()
+   */
+  public static final int WHEEL_BLOCK_SCROLL = 1;
+
+  /**
+   * Indicates what scroll type should take place. This should be limited
+   * to {@link #WHEEL_UNIT_SCROLL} and {@link #WHEEL_BLOCK_SCROLL}.
+   *
+   * @serial the scroll type
+   */
+  private final int scrollType;
+
+  /**
+   * Indicates the scroll amount. This is only meaningful if scrollType is
+   * WHEEL_UNIT_SCROLL.
+   *
+   * @serial the number of lines to scroll
+   */
+  private final int scrollAmount;
+
+  /**
+   * Indicates how far the mouse wheel was rotated.
+   *
+   * @serial the rotation amount
+   */
+  private final int wheelRotation;
+
+  /**
+   * Initializes a new instance of <code>MouseWheelEvent</code> with the
+   * specified information. Note that an invalid id leads to unspecified
+   * results.
+   *
+   * @param source the source of the event
+   * @param id the event id
+   * @param when the timestamp of when the event occurred
+   * @param modifiers any modifier bits for this event
+   * @param x the X coordinate of the mouse point
+   * @param y the Y coordinate of the mouse point
+   * @param clickCount the number of mouse clicks for this event
+   * @param popupTrigger true if this event triggers a popup menu
+   * @param scrollType one of {@link #WHEEL_UNIT_SCROLL},
+   *        {@link #WHEEL_BLOCK_SCROLL}
+   * @param scrollAmount the number of units to scroll, ignored for block type
+   * @param wheelRotation the number of rotation "clicks"
+   * @throws IllegalArgumentException if source is null
+   * @see MouseEvent#MouseEvent(Component, int, long, int, int, int, int,
+   *      boolean)
+   */
+  public MouseWheelEvent(Component source, int id, long when, int modifiers,
+                         int x, int y, int clickCount, boolean popupTrigger,
+                         int scrollType, int scrollAmount, int wheelRotation)
+  {
+    super(source, id, when, modifiers, x, y, clickCount, popupTrigger);
+    this.scrollType = scrollType;
+    this.scrollAmount = scrollAmount;
+    this.wheelRotation = wheelRotation;
+  }
+
+  /**
+   * This method returns the scrolling pattern this event requests. Legal
+   * values are {@link #WHEEL_UNIT_SCROLL} and {@link #WHEEL_BLOCK_SCROLL}.
+   *
+   * @return the scroll type
+   * @see Adjustable#getUnitIncrement()
+   * @see Adjustable#getBlockIncrement()
+   * @see Scrollable#getScrollableUnitIncrement(Rectangle, int, int)
+   * @see Scrollable#getScrollableBlockIncrement(Rectangle, int, int)
+   */
+  public int getScrollType()
+  {
+    return scrollType;
+  }
+
+  /**
+   * Returns the number of units to scroll in response to this event. This
+   * only makes sense when the scroll type is WHEEL_UNIT_SCROLL.
+   *
+   * @return the number of scroll units, if defined
+   * @see #getScrollType()
+   */
+  public int getScrollAmount()
+  {
+    return scrollAmount;
+  }
+
+  /**
+   * Gets the number of "clicks" the wheel was rotated. Negative values move
+   * up (away) from the user, positive values move down (towards) the user.
+   *
+   * @return the number of rotation clicks
+   */
+  public int getWheelRotation()
+  {
+    return wheelRotation;
+  }
+
+  /**
+   * This is a convenience method which aids in a common listener for scrolling
+   * a scrollpane (although this is already built into ScrollPane and
+   * JScrollPane). This method only makes sense when getScrollType() returns
+   * WHEEL_UNIT_SCROLL.
+   *
+   * <p>This accounts for direction of scroll and amount of wheel movement, as
+   * interpreted by the platform settings.
+   *
+   * @return the number of units to scroll
+   * @see #getScrollType()
+   * @see #getScrollAmount()
+   * @see MouseWheelListener
+   * @see Adjustable
+   * @see Adjustable#getUnitIncrement()
+   * @see Scrollable
+   * @see Scrollable#getScrollableUnitIncrement(Rectangle, int, int)
+   * @see ScrollPane
+   * @see ScrollPane#setWheelScrollingEnabled(boolean)
+   * @see JScrollPane
+   * @see JScrollPane#setWheelScrollingEnabled(boolean)
+   */
+  public int getUnitsToScroll()
+  {
+    return wheelRotation * scrollAmount;
+  }
+
+  /**
+   * Returns a string identifying this event. For mouse wheel events, this
+   * is <code>super.paramString() + ",scrollType=WHEEL_" +
+   * (getScrollType() == WHEEL_UNIT_SCROLL ? "UNIT" : "BLOCK")
+   * + "_SCROLL,scrollAmount=" + getScrollAmount() + ",wheelRotation="
+   * + getWheelRotation()</code>.
+   *
+   * @return a string identifying this event
+   */
+  public String paramString()
+  {
+    return super.paramString() + ",scrollType="
+      + (scrollType == WHEEL_UNIT_SCROLL ? "WHEEL_UNIT_SCROLL"
+         : scrollType == WHEEL_BLOCK_SCROLL ? "WHEEL_BLOCK_SCROLL"
+         : "unknown scroll type")
+      + ",scrollAmount=" + scrollAmount + ",wheelRotation=" + wheelRotation;
+  }
+} // class MouseWheelEvent