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diff --git a/libjava/gnu/java/nio/ByteBufferImpl.java b/libjava/gnu/java/nio/ByteBufferImpl.java
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+/* ByteBufferImpl.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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.java.nio;
+
+import java.nio.ByteBuffer;
+import java.nio.CharBuffer;
+import java.nio.DoubleBuffer;
+import java.nio.FloatBuffer;
+import java.nio.IntBuffer;
+import java.nio.LongBuffer;
+import java.nio.ShortBuffer;
+
+public final class ByteBufferImpl extends ByteBuffer
+{
+  private byte[] backing_buffer;
+  private int array_offset;
+  private boolean ro;
+
+  public ByteBufferImpl (int cap, int off, int lim)
+  {
+    this.cap = cap;
+    position (off);
+    limit (lim);
+    this.backing_buffer = new byte[cap];
+  }
+
+  public ByteBufferImpl (byte[] array, int off, int lim)
+  {
+    this.cap = array.length;
+    position (off);
+    limit (lim);
+    this.backing_buffer = array;
+  }
+
+  public ByteBufferImpl (ByteBufferImpl copy)
+  {
+    this.cap = copy.capacity ();
+    position (copy.position ());
+    limit (copy.limit ());
+    ro = copy.ro;
+    backing_buffer = copy.backing_buffer;
+  }
+
+  void inc_pos (int toAdd)
+  {
+    position (position () + toAdd);
+  }
+
+//   private static native byte[] nio_cast(byte[]copy);
+//   private static native byte[] nio_cast(char[]copy);
+//   private static native byte[] nio_cast(short[]copy);
+//   private static native byte[] nio_cast(long[]copy);
+//   private static native byte[] nio_cast(int[]copy);
+//   private static native byte[] nio_cast(float[]copy);
+//   private static native byte[] nio_cast(double[]copy);
+
+  private static byte[] nio_cast(byte[]copy) { return null; };
+  private static byte[] nio_cast(char[]copy) { return null; };
+  private static byte[] nio_cast(short[]copy) { return null; };
+  private static byte[] nio_cast(long[]copy) { return null; };
+  private static byte[] nio_cast(int[]copy) { return null; };
+  private static byte[] nio_cast(float[]copy) { return null; };
+  private static byte[] nio_cast(double[]copy) { return null; };
+
+  ByteBufferImpl(byte[] copy) { this.backing_buffer = copy != null ? nio_cast(copy) : null; }
+//   private static native byte nio_get_Byte(ByteBufferImpl b, int index, int limit);
+//   private static native void nio_put_Byte(ByteBufferImpl b, int index, int limit, byte value);
+  private static byte nio_get_Byte(ByteBufferImpl b, int index, int limit) { return 0; };
+  private static void nio_put_Byte(ByteBufferImpl b, int index, int limit, byte value) { };
+  public ByteBuffer asByteBuffer() { ByteBufferImpl res = new ByteBufferImpl(backing_buffer); res.limit((limit()*1)/1); return res; }
+
+  ByteBufferImpl(char[] copy) { this.backing_buffer = copy != null ? nio_cast(copy) : null; }
+//   private static native char nio_get_Char(ByteBufferImpl b, int index, int limit);
+//   private static native void nio_put_Char(ByteBufferImpl b, int index, int limit, char value);
+  private static char nio_get_Char(ByteBufferImpl b, int index, int limit) { return ' '; };
+  private static void nio_put_Char(ByteBufferImpl b, int index, int limit, char value) { };
+  public CharBuffer asCharBuffer() { CharBufferImpl res = new CharBufferImpl(backing_buffer); res.limit((limit()*2)/1); return res; }
+
+  ByteBufferImpl(short[] copy) { this.backing_buffer = copy != null ? nio_cast(copy) : null; }
+//   private static native short nio_get_Short(ByteBufferImpl b, int index, int limit);
+//   private static native void nio_put_Short(ByteBufferImpl b, int index, int limit, short value);
+  private static short nio_get_Short(ByteBufferImpl b, int index, int limit) { return 0; };
+  private static void nio_put_Short(ByteBufferImpl b, int index, int limit, short value) { };
+  public ShortBuffer asShortBuffer() { ShortBufferImpl res = new ShortBufferImpl(backing_buffer); res.limit((limit()*2)/1); return res; }
+
+  ByteBufferImpl(int[] copy) { this.backing_buffer = copy != null ? nio_cast(copy) : null; }
+//   private static native int nio_get_Int(ByteBufferImpl b, int index, int limit);
+//   private static native void nio_put_Int(ByteBufferImpl b, int index, int limit, int value);
+  private static int nio_get_Int(ByteBufferImpl b, int index, int limit) { return 0; };
+  private static void nio_put_Int(ByteBufferImpl b, int index, int limit, int value) { };
+  public IntBuffer asIntBuffer() { IntBufferImpl res = new IntBufferImpl(backing_buffer); res.limit((limit()*4)/1); return res; }
+
+  ByteBufferImpl(long[] copy) { this.backing_buffer = copy != null ? nio_cast(copy) : null; }
+//   private static native long nio_get_Long(ByteBufferImpl b, int index, int limit);
+//   private static native void nio_put_Long(ByteBufferImpl b, int index, int limit, long value);
+  private static long nio_get_Long(ByteBufferImpl b, int index, int limit) { return 0; };
+  private static void nio_put_Long(ByteBufferImpl b, int index, int limit, long value) { };
+  public LongBuffer asLongBuffer() { LongBufferImpl res = new LongBufferImpl(backing_buffer); res.limit((limit()*8)/1); return res; }
+
+  ByteBufferImpl(float[] copy) { this.backing_buffer = copy != null ? nio_cast(copy) : null; }
+//   private static native float nio_get_Float(ByteBufferImpl b, int index, int limit);
+//   private static native void nio_put_Float(ByteBufferImpl b, int index, int limit, float value);
+  private static float nio_get_Float(ByteBufferImpl b, int index, int limit) { return 0.0f; };
+  private static void nio_put_Float(ByteBufferImpl b, int index, int limit, float value) { };
+  public FloatBuffer asFloatBuffer() { FloatBufferImpl res = new FloatBufferImpl(backing_buffer); res.limit((limit()*4)/1); return res; }
+
+  ByteBufferImpl(double[] copy) { this.backing_buffer = copy != null ? nio_cast(copy) : null; }
+//   private static native double nio_get_Double(ByteBufferImpl b, int index, int limit);
+//   private static native void nio_put_Double(ByteBufferImpl b, int index, int limit, double value);
+  private static double nio_get_Double(ByteBufferImpl b, int index, int limit) { return 0.0d; };
+  private static void nio_put_Double(ByteBufferImpl b, int index, int limit, double value) { };
+  public DoubleBuffer asDoubleBuffer() { DoubleBufferImpl res = new DoubleBufferImpl(backing_buffer); res.limit((limit()*8)/1); return res; }
+  
+  public boolean isReadOnly()
+  {
+    return ro;
+  }
+  
+  public ByteBuffer slice()
+  {
+    ByteBufferImpl A = new ByteBufferImpl(this);
+    A.array_offset = position();
+    return A;
+  }
+  
+  public ByteBuffer duplicate()
+  {
+    return new ByteBufferImpl(this);
+  }
+  
+  public ByteBuffer asReadOnlyBuffer()
+  {
+    ByteBufferImpl a = new ByteBufferImpl(this);
+    a.ro = true;
+    return a;
+  }
+  
+  public ByteBuffer compact()
+  {
+    return this;
+  }
+
+  public boolean isDirect()
+  {
+    return backing_buffer != null;
+  }
+
+  final public byte get()
+  {
+    byte e = backing_buffer[position()];
+    position(position()+1);
+    return e;
+  }
+  
+  final public ByteBuffer put(byte b)
+  {
+    backing_buffer[position()] = b;
+    position(position()+1);
+    return this;
+  }
+  
+  final public byte get(int index)
+  {
+    return backing_buffer[index];
+  }
+
+  final public ByteBuffer put(int index, byte b)
+  {
+    backing_buffer[index] = b;
+    return this;
+  }
+  
+  final public char getChar() { char a = nio_get_Char(this, position(), limit()); inc_pos(2); return a; } final public ByteBuffer putChar(char value) { nio_put_Char(this, position(), limit(), value); inc_pos(2); return this; } final public char getChar(int index) { char a = nio_get_Char(this, index, limit()); return a; } final public ByteBuffer putChar(int index, char value) { nio_put_Char(this, index, limit(), value); return this; };
+  final public short getShort() { short a = nio_get_Short(this, position(), limit()); inc_pos(2); return a; } final public ByteBuffer putShort(short value) { nio_put_Short(this, position(), limit(), value); inc_pos(2); return this; } final public short getShort(int index) { short a = nio_get_Short(this, index, limit()); return a; } final public ByteBuffer putShort(int index, short value) { nio_put_Short(this, index, limit(), value); return this; };
+  final public int getInt() { int a = nio_get_Int(this, position(), limit()); inc_pos(4); return a; } final public ByteBuffer putInt(int value) { nio_put_Int(this, position(), limit(), value); inc_pos(4); return this; } final public int getInt(int index) { int a = nio_get_Int(this, index, limit()); return a; } final public ByteBuffer putInt(int index, int value) { nio_put_Int(this, index, limit(), value); return this; };
+  final public long getLong() { long a = nio_get_Long(this, position(), limit()); inc_pos(8); return a; } final public ByteBuffer putLong(long value) { nio_put_Long(this, position(), limit(), value); inc_pos(8); return this; } final public long getLong(int index) { long a = nio_get_Long(this, index, limit()); return a; } final public ByteBuffer putLong(int index, long value) { nio_put_Long(this, index, limit(), value); return this; };
+  final public float getFloat() { float a = nio_get_Float(this, position(), limit()); inc_pos(4); return a; } final public ByteBuffer putFloat(float value) { nio_put_Float(this, position(), limit(), value); inc_pos(4); return this; } final public float getFloat(int index) { float a = nio_get_Float(this, index, limit()); return a; } final public ByteBuffer putFloat(int index, float value) { nio_put_Float(this, index, limit(), value); return this; };
+  final public double getDouble() { double a = nio_get_Double(this, position(), limit()); inc_pos(8); return a; } final public ByteBuffer putDouble(double value) { nio_put_Double(this, position(), limit(), value); inc_pos(8); return this; } final public double getDouble(int index) { double a = nio_get_Double(this, index, limit()); return a; } final public ByteBuffer putDouble(int index, double value) { nio_put_Double(this, index, limit(), value); return this; };
+}