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diff --git a/libjava/classpath/java/nio/channels/DatagramChannel.java b/libjava/classpath/java/nio/channels/DatagramChannel.java
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+/* DatagramChannel.java --
+   Copyright (C) 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.nio.channels;
+
+import java.io.IOException;
+import java.net.DatagramSocket;
+import java.net.SocketAddress;
+import java.nio.ByteBuffer;
+import java.nio.channels.spi.AbstractSelectableChannel;
+import java.nio.channels.spi.SelectorProvider;
+
+
+/**
+ * @since 1.4
+ */
+public abstract class DatagramChannel extends AbstractSelectableChannel
+  implements ByteChannel, ScatteringByteChannel, GatheringByteChannel
+{
+  /**
+   * Initializes the channel.
+   */
+  protected DatagramChannel(SelectorProvider provider)
+  {
+    super(provider);
+  }
+
+  /**
+   * Opens a datagram channel.
+   *
+   * @exception IOException If an error occurs
+   */
+  public static DatagramChannel open() throws IOException
+  {
+    return SelectorProvider.provider().openDatagramChannel();
+  }
+
+  /**
+   * Reads data from this channel.
+   */
+  public final long read(ByteBuffer[] dsts) throws IOException
+  {
+    long b = 0;
+
+    for (int i = 0; i < dsts.length; i++)
+      b += read(dsts[i]);
+
+    return b;
+  }
+
+  /**
+   * Writes data to this channel.
+   *
+   * @exception IOException If an error occurs
+   * @exception NotYetConnectedException The channel's socket is not connected.
+   */
+  public final long write(ByteBuffer[] srcs) throws IOException
+  {
+    long b = 0;
+
+    for (int i = 0; i < srcs.length; i++)
+      b += write(srcs[i]);
+
+    return b;
+  }
+
+  /**
+   * Connects this channel's socket.
+   *
+   * @exception AsynchronousCloseException If another thread closes this channel
+   * while the connect operation is in progress.
+   * @exception ClosedByInterruptException If another thread interrupts the
+   * current thread while the read operation is in progress, thereby closing the
+   * channel and setting the current thread's interrupt status.
+   * @exception ClosedChannelException If this channel is closed.
+   * @exception IOException If an error occurs.
+   * @exception SecurityException If a security manager has been installed and
+   * it does not permit datagrams to be sent to the given address.
+   */
+  public abstract DatagramChannel connect(SocketAddress remote)
+    throws IOException;
+
+  /**
+   * Disonnects this channel's socket.
+   *
+   * @exception IOException If an error occurs
+   */
+  public abstract DatagramChannel disconnect() throws IOException;
+
+  /**
+   * Tells whether or not this channel's socket is connected.
+   *
+   * @exception IOException If an error occurs.
+   * @exception NotYetConnectedException The channel's socket is not connected.
+   */
+  public abstract boolean isConnected();
+
+  /**
+   * Reads data from this channel.
+   */
+  public abstract int read(ByteBuffer dst) throws IOException;
+
+  /**
+   * Reads data from this channel.
+   *
+   * @exception IOException If an error occurs.
+   * @exception NotYetConnectedException The channel's socket is not connected.
+   */
+  public abstract long read(ByteBuffer[] dsts, int offset, int length)
+    throws IOException;
+
+  /**
+   * Receives a datagram via this channel.
+   *
+   * @exception AsynchronousCloseException If another thread closes this channel
+   * while the connect operation is in progress.
+   * @exception ClosedByInterruptException If another thread interrupts the
+   * current thread while the read operation is in progress, thereby closing the
+   * channel and setting the current thread's interrupt status.
+   * @exception ClosedChannelException If this channel is closed.
+   * @exception IOException If an error occurs
+   * @exception SecurityException If a security manager has been installed and
+   * it does not permit datagrams to be sent to the given address.
+   */
+  public abstract SocketAddress receive(ByteBuffer dst)
+    throws IOException;
+
+  /**
+   * Sends a datagram via this channel.
+   *
+   * @exception AsynchronousCloseException If another thread closes this channel
+   * while the connect operation is in progress.
+   * @exception ClosedByInterruptException If another thread interrupts the
+   * current thread while the read operation is in progress, thereby closing the
+   * channel and setting the current thread's interrupt status.
+   * @exception ClosedChannelException If this channel is closed.
+   * @exception IOException If an error occurs
+   * @exception SecurityException If a security manager has been installed and
+   * it does not permit datagrams to be sent to the given address.
+   */
+  public abstract int send(ByteBuffer src, SocketAddress target)
+    throws IOException;
+
+  /**
+   * Retrieves the channel's socket.
+   */
+  public abstract DatagramSocket socket();
+
+  /**
+   * Writes data to this channel.
+   *
+   * @exception IOException If an error occurs.
+   * @exception NotYetConnectedException The channel's socket is not connected.
+   */
+  public abstract int write(ByteBuffer src) throws IOException;
+
+  /**
+   * Writes data to this channel.
+   *
+   * @exception IOException If an error occurs.
+   * @exception NotYetConnectedException The channel's socket is not connected.
+   */
+  public abstract long write(ByteBuffer[] srcs, int offset, int length)
+    throws IOException;
+
+  /**
+   * Retrieves the valid operations for this channel.
+   *
+   * @exception IOException If an error occurs.
+   * @exception NotYetConnectedException The channel's socket is not connected.
+   */
+  public final int validOps()
+  {
+    return SelectionKey.OP_READ | SelectionKey.OP_WRITE;
+  }
+}