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diff --git a/libjava/java/nio/ByteBufferImpl.java b/libjava/java/nio/ByteBufferImpl.java
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+/* ByteBufferImpl.java -- 
+   Copyright (C) 2002, 2003 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 java.nio;
+
+/**
+ * This is a Heap memory implementation
+ */
+public final class ByteBufferImpl extends ByteBuffer
+{
+  private boolean readOnly;
+
+  ByteBufferImpl (int capacity)
+  {
+    this (new byte [capacity], 0, capacity, capacity, 0, -1, false);
+  }
+  
+  ByteBufferImpl (byte[] buffer, int offset, int capacity, int limit, int position, int mark, boolean readOnly)
+  {
+    super (buffer, offset, capacity, limit, position, mark);
+    this.readOnly = readOnly;
+  }
+  
+  public CharBuffer asCharBuffer ()
+  {
+    return new CharViewBufferImpl (this, position (), remaining(), remaining (), 0, -1, isReadOnly ());
+  }
+
+  public ShortBuffer asShortBuffer ()
+  {
+    return new ShortViewBufferImpl (this, position (), remaining(), remaining (), 0, -1, isReadOnly ());
+  }
+
+  public IntBuffer asIntBuffer ()
+  {
+    return new IntViewBufferImpl (this, position (), remaining(), remaining (), 0, -1, isReadOnly ());
+  }
+
+  public LongBuffer asLongBuffer ()
+  {
+    return new LongViewBufferImpl (this, position (), remaining(), remaining (), 0, -1, isReadOnly ());
+  }
+
+  public FloatBuffer asFloatBuffer ()
+  {
+    return new FloatViewBufferImpl (this, position (), remaining(), remaining (), 0, -1, isReadOnly ());
+  }
+
+  public DoubleBuffer asDoubleBuffer ()
+  {
+    return new DoubleViewBufferImpl (this, position (), remaining(), remaining (), 0, -1, isReadOnly ());
+  }
+
+  public boolean isReadOnly ()
+  {
+    return readOnly;
+  }
+  
+  public ByteBuffer slice ()
+  {
+    return new ByteBufferImpl (backing_buffer, array_offset + position (), remaining (), remaining (), 0, -1, isReadOnly ());
+  }
+  
+  public ByteBuffer duplicate ()
+  {
+    return new ByteBufferImpl (backing_buffer, array_offset, capacity (), limit (), position (), mark, isReadOnly ());
+  }
+  
+  public ByteBuffer asReadOnlyBuffer ()
+  {
+    return new ByteBufferImpl (backing_buffer, array_offset, capacity (), limit (), position (), mark, true);
+  }
+  
+  public ByteBuffer compact ()
+  {
+    int copied = 0;
+    
+    while (remaining () > 0)
+      {
+	put (copied, get ());
+	copied++;
+      }
+
+    position (copied);
+    return this;
+  }
+  
+  public boolean isDirect ()
+  {
+    return false;
+  }
+
+  /**
+   * Relative get method. Reads the next <code>byte</code> from the buffer.
+   */
+  final public byte get ()
+  {
+    byte result = backing_buffer [position ()];
+    position (position () + 1);
+    return result;
+  }
+  
+  /**
+   * Relative put method. Writes <code>value</code> to the next position
+   * in the buffer.
+   * 
+   * @exception ReadOnlyBufferException If this buffer is read-only.
+   */
+  final public ByteBuffer put (byte value)
+  {
+    if (readOnly)
+      throw new ReadOnlyBufferException ();
+	  	    
+    backing_buffer [position ()] = value;
+    position (position () + 1);
+    return this;
+  }
+  
+  /**
+   * Absolute get method. Reads the <code>byte</code> at position
+   * <code>index</code>.
+   *
+   * @exception IndexOutOfBoundsException If index is negative or not smaller
+   * than the buffer's limit.
+   */
+  final public byte get (int index)
+  {
+    return backing_buffer [index];
+  }
+  
+  /**
+   * Absolute put method. Writes <code>value</value> to position
+   * <code>index</code> in the buffer.
+   *
+   * @exception IndexOutOfBoundsException If index is negative or not smaller
+   * than the buffer's limit.
+   * @exception ReadOnlyBufferException If this buffer is read-only.
+   */
+  final public ByteBuffer put (int index, byte value)
+  {
+    if (readOnly)
+      throw new ReadOnlyBufferException ();
+    	    
+    backing_buffer [index] = value;
+    return this;
+  }
+  
+  final public char getChar ()
+  {
+    // FIXME: this handles big endian only
+    return (char) (((get () & 0xff) << 8) + (get () & 0xff));
+  }
+  
+  final public ByteBuffer putChar (char value)
+  {
+    // FIXME: this handles big endian only
+    put ((byte) ((((int) value) & 0xff00) >> 8));
+    put ((byte) (((int) value) & 0x00ff));
+    return this;
+  }
+  
+  final public char getChar (int index)
+  {
+    // FIXME: this handles big endian only
+    return (char) (((get (index) & 0xff) << 8) + (get (index + 1) & 0xff));
+  }
+  
+  final public ByteBuffer putChar (int index, char value)
+  {
+    // FIXME: this handles big endian only
+    put (index, (byte) ((((int) value) & 0xff00) >> 8));
+    put (index + 1, (byte) (((int) value) & 0x00ff));
+    return this;
+  }
+
+  final public short getShort ()
+  {
+    // FIXME: this handles big endian only
+    return (short) (((get () & 0xff) << 8) + (get () & 0xff));
+  }
+  
+  final public ByteBuffer putShort (short value)
+  {
+    // FIXME: this handles big endian only
+    put ((byte) ((((int) value) & 0xff00) >> 8));
+    put ((byte) (((int) value) & 0x00ff));
+    return this;
+  }
+  
+  final public short getShort (int index)
+  {
+    // FIXME: this handles big endian only
+    return (short) (((get (index) & 0xff) << 8) + (get (index + 1) & 0xff));
+  }
+  
+  final public ByteBuffer putShort (int index, short value)
+  {
+    // FIXME: this handles big endian only
+    put (index, (byte) ((((int) value) & 0xff00) >> 8));
+    put (index + 1, (byte) (((int) value) & 0x00ff));
+    return this;
+  }
+
+  final public int getInt ()
+  {
+    // FIXME: this handles big endian only
+    return (int) (((get () & 0xff) << 24)
+                  + (get () & 0xff) << 16
+                  + (get () & 0xff) << 8
+                  + (get () & 0xff));
+  }
+  
+  final public ByteBuffer putInt (int value)
+  {
+    // FIXME: this handles big endian only
+    put ((byte) ((((int) value) & 0xff000000) >> 24));
+    put ((byte) ((((int) value) & 0x00ff0000) >> 16));
+    put ((byte) ((((int) value) & 0x0000ff00) >> 8));
+    put ((byte) (((int) value) & 0x000000ff));
+    return this;
+  }
+  
+  final public int getInt (int index)
+  {
+    // FIXME: this handles big endian only
+    return (int) (((get (index) & 0xff) << 24)
+                  + (get (index + 1) & 0xff) << 16
+                  + (get (index + 2) & 0xff) << 8
+                  + (get (index + 3) & 0xff));
+  }
+  
+  final public ByteBuffer putInt (int index, int value)
+  {
+    // FIXME: this handles big endian only
+    put (index, (byte) ((((int) value) & 0xff000000) >> 24));
+    put (index + 1, (byte) ((((int) value) & 0x00ff0000) >> 16));
+    put (index + 2, (byte) ((((int) value) & 0x0000ff00) >> 8));
+    put (index + 3, (byte) (((int) value) & 0x000000ff));
+    return this;
+  }
+
+  final public long getLong ()
+  {
+    // FIXME: this handles big endian only
+    return (long) (((get () & 0xff) << 56)
+                   + (get () & 0xff) << 48
+                   + (get () & 0xff) << 40
+                   + (get () & 0xff) << 32
+                   + (get () & 0xff) << 24
+                   + (get () & 0xff) << 16
+                   + (get () & 0xff) << 8
+                   + (get () & 0xff));
+  }
+  
+  final public ByteBuffer putLong (long value)
+  {
+    // FIXME: this handles big endian only
+    put ((byte) ((value & 0xff00000000000000L) >> 56));
+    put ((byte) ((value & 0x00ff000000000000L) >> 48));
+    put ((byte) ((value & 0x0000ff0000000000L) >> 40));
+    put ((byte) ((value & 0x000000ff00000000L) >> 32));
+    put ((byte) ((value & 0x00000000ff000000L) >> 24));
+    put ((byte) ((value & 0x0000000000ff0000L) >> 16));
+    put ((byte) ((value & 0x000000000000ff00L) >> 8));
+    put ((byte) (value & 0x00000000000000ffL));
+    return this;
+  }
+  
+  final public long getLong (int index)
+  {
+    // FIXME: this handles big endian only
+    return (long) (((get (index) & 0xff) << 56)
+                   + (get (index + 1) & 0xff) << 48
+                   + (get (index + 2) & 0xff) << 40
+                   + (get (index + 3) & 0xff) << 32
+                   + (get (index + 4) & 0xff) << 24
+                   + (get (index + 5) & 0xff) << 16
+                   + (get (index + 6) & 0xff) << 8
+                   + (get (index + 7) & 0xff));
+  }
+  
+  final public ByteBuffer putLong (int index, long value)
+  {
+    // FIXME: this handles big endian only
+    put (index, (byte) ((value & 0xff00000000000000L) >> 56));
+    put (index + 1, (byte) ((value & 0x00ff000000000000L) >> 48));
+    put (index + 2, (byte) ((value & 0x0000ff0000000000L) >> 40));
+    put (index + 3, (byte) ((value & 0x000000ff00000000L) >> 32));
+    put (index + 4, (byte) ((value & 0x00000000ff000000L) >> 24));
+    put (index + 5, (byte) ((value & 0x0000000000ff0000L) >> 16));
+    put (index + 6, (byte) ((value & 0x000000000000ff00L) >> 8));
+    put (index + 7, (byte) (value & 0x00000000000000ffL));
+    return this;
+  }
+
+  final public float getFloat ()
+  {
+    // FIXME: this handles big endian only
+    return (float) (((get () & 0xff) << 24)
+                    + (get () & 0xff) << 16
+                    + (get () & 0xff) << 8
+                    + (get () & 0xff));
+  }
+  
+  final public ByteBuffer putFloat (float value)
+  {
+    // FIXME: this handles big endian only
+    put ((byte) ((((int) value) & 0xff000000) >> 24));
+    put ((byte) ((((int) value) & 0x00ff0000) >> 16));
+    put ((byte) ((((int) value) & 0x0000ff00) >> 8));
+    put ((byte) (((int) value) & 0x000000ff));
+    return this;
+  }
+  
+  final public float getFloat (int index)
+  {
+    // FIXME: this handles big endian only
+    return (float) (((get (index) & 0xff) << 24)
+                    + (get (index + 1) & 0xff) << 16
+                    + (get (index + 2) & 0xff) << 8
+                    + (get (index + 3) & 0xff));
+  }
+
+  final public ByteBuffer putFloat (int index, float value)
+  {
+    // FIXME: this handles big endian only
+    put (index, (byte) ((((int) value) & 0xff000000) >> 24));
+    put (index + 1, (byte) ((((int) value) & 0x00ff0000) >> 16));
+    put (index + 2, (byte) ((((int) value) & 0x0000ff00) >> 8));
+    put (index + 3, (byte) (((int) value) & 0x000000ff));
+    return this;
+  }
+
+  final public double getDouble ()
+  {
+    // FIXME: this handles big endian only
+    return (double) (((get () & 0xff) << 56)
+                     + (get () & 0xff) << 48
+                     + (get () & 0xff) << 40
+                     + (get () & 0xff) << 32
+                     + (get () & 0xff) << 24
+                     + (get () & 0xff) << 16
+                     + (get () & 0xff) << 8
+                     + (get () & 0xff));
+  }
+
+  final public ByteBuffer putDouble (double value)
+  {
+    // FIXME: this handles big endian only
+    put ((byte) ((((long) value) & 0xff00000000000000L) >> 56));
+    put ((byte) ((((long) value) & 0x00ff000000000000L) >> 48));
+    put ((byte) ((((long) value) & 0x0000ff0000000000L) >> 40));
+    put ((byte) ((((long) value) & 0x000000ff00000000L) >> 32));
+    put ((byte) ((((long) value) & 0x00000000ff000000L) >> 24));
+    put ((byte) ((((long) value) & 0x0000000000ff0000L) >> 16));
+    put ((byte) ((((long) value) & 0x000000000000ff00L) >> 8));
+    put ((byte) (((long) value) & 0x00000000000000ffL));
+    return this;
+  }
+  
+  final public double getDouble (int index)
+  {
+    // FIXME: this handles big endian only
+    return (double) (((get (index) & 0xff) << 56)
+                     + (get (index + 1) & 0xff) << 48
+                     + (get (index + 2) & 0xff) << 40
+                     + (get (index + 3) & 0xff) << 32
+                     + (get (index + 4) & 0xff) << 24
+                     + (get (index + 5) & 0xff) << 16
+                     + (get (index + 6) & 0xff) << 8
+                     + (get (index + 7) & 0xff));
+  }
+  
+  final public ByteBuffer putDouble (int index, double value)
+  {
+    // FIXME: this handles big endian only
+    put (index, (byte) ((((long) value) & 0xff00000000000000L) >> 56));
+    put (index + 1, (byte) ((((long) value) & 0x00ff000000000000L) >> 48));
+    put (index + 2, (byte) ((((long) value) & 0x0000ff0000000000L) >> 40));
+    put (index + 3, (byte) ((((long) value) & 0x000000ff00000000L) >> 32));
+    put (index + 4, (byte) ((((long) value) & 0x00000000ff000000L) >> 24));
+    put (index + 5, (byte) ((((long) value) & 0x0000000000ff0000L) >> 16));
+    put (index + 6, (byte) ((((long) value) & 0x000000000000ff00L) >> 8));
+    put (index + 7, (byte) (((long) value) & 0x00000000000000ffL));
+    return this;
+  }
+}