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   * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
   * particular file as subject to the "Classpath" exception as provided
   * by Oracle in the LICENSE file that accompanied this code.
   *
   * This code 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
   * version 2 for more details (a copy is included in the LICENSE file that
   * accompanied this code).
   *
   * You should have received a copy of the GNU General Public License version
   * 2 along with this work; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
  // -- This file was mechanically generated: Do not edit! -- //
  
  package java.nio;
  
  
  import dalvik.annotation.codegen.CovariantReturnType;
  
  /**
   * A long buffer.
   *
   * <p> This class defines four categories of operations upon
   * long buffers:
   *
   * <ul>
   *
   *   <li><p> Absolute and relative {@link #get() <i>get</i>} and
   *   {@link #put(long) <i>put</i>} methods that read and write
   *   single longs; </p></li>
   *
   *   <li><p> Relative {@link #get(long[]) <i>bulk get</i>}
   *   methods that transfer contiguous sequences of longs from this buffer
   *   into an array; and</p></li>
   *
   *   <li><p> Relative {@link #put(long[]) <i>bulk put</i>}
   *   methods that transfer contiguous sequences of longs from a
   *   long array or some other long
   *   buffer into this buffer;&#32;and </p></li>
   *
   *
   *   <li><p> Methods for {@link #compact compacting}, {@link
   *   #duplicate duplicating}, and {@link #slice slicing}
   *   a long buffer.  </p></li>
   *
   * </ul>
   *
   * <p> Long buffers can be created either by {@link #allocate
   * <i>allocation</i>}, which allocates space for the buffer's
   *
   *
   * content, by {@link #wrap(long[]) <i>wrapping</i>} an existing
   * long array  into a buffer, or by creating a
   * <a href="ByteBuffer.html#views"><i>view</i></a> of an existing byte buffer.
   *
   *
  *
   *
   * <p> Like a byte buffer, a long buffer is either <a
   * href="ByteBuffer.html#direct"><i>direct</i> or <i>non-direct</i></a>.  A
   * long buffer created via the <tt>wrap</tt> methods of this class will
   * be non-direct.  A long buffer created as a view of a byte buffer will
   * be direct if, and only if, the byte buffer itself is direct.  Whether or not
   * a long buffer is direct may be determined by invoking the {@link
   * #isDirect isDirect} method.  </p>
   *
  *
   *
   *
   * <p> Methods in this class that do not otherwise have a value to return are
   * specified to return the buffer upon which they are invoked.  This allows
   * method invocations to be chained.
   *
   *
   *
   * @author Mark Reinhold
   * @author JSR-51 Expert Group
   * @since 1.4
   */
  
  public abstract class LongBuffer
      extends Buffer
      implements Comparable<LongBuffer>
  {
  
      // These fields are declared here rather than in Heap-X-Buffer in order to
      // reduce the number of virtual method invocations needed to access these
      // values, which is especially costly when coding small buffers.
      //
      final long[] hb;                  // Non-null only for heap buffers
      final int offset;
      boolean isReadOnly;                 // Valid only for heap buffers
  
      // Creates a new buffer with the given mark, position, limit, capacity,
      // backing array, and array offset
      //
      LongBuffer(int mark, int pos, int lim, int cap,   // package-private
                   long[] hb, int offset)
      {
          // Android-added: elementSizeShift parameter (log2 of element size).
          super(mark, pos, lim, cap, 3 /* elementSizeShift */);
          this.hb = hb;
          this.offset = offset;
      }
  
      // Creates a new buffer with the given mark, position, limit, and capacity
      //
      LongBuffer(int mark, int pos, int lim, int cap) { // package-private
          this(mark, pos, lim, cap, null, 0);
      }
  
  
      /**
       * Allocates a new long buffer.
       *
       * <p> The new buffer's position will be zero, its limit will be its
       * capacity, its mark will be undefined, and each of its elements will be
       * initialized to zero.  It will have a {@link #array backing array},
       * and its {@link #arrayOffset array offset} will be zero.
       *
       * @param  capacity
       *         The new buffer's capacity, in longs
       *
       * @return  The new long buffer
       *
       * @throws  IllegalArgumentException
       *          If the <tt>capacity</tt> is a negative integer
       */
      public static LongBuffer allocate(int capacity) {
          if (capacity < 0)
              throw new IllegalArgumentException();
          return new HeapLongBuffer(capacity, capacity);
      }
  
      /**
       * Wraps a long array into a buffer.
       *
       * <p> The new buffer will be backed by the given long array;
       * that is, modifications to the buffer will cause the array to be modified
       * and vice versa.  The new buffer's capacity will be
       * <tt>array.length</tt>, its position will be <tt>offset</tt>, its limit
       * will be <tt>offset + length</tt>, and its mark will be undefined.  Its
       * {@link #array backing array} will be the given array, and
       * its {@link #arrayOffset array offset} will be zero.  </p>
       *
       * @param  array
       *         The array that will back the new buffer
       *
       * @param  offset
       *         The offset of the subarray to be used; must be non-negative and
       *         no larger than <tt>array.length</tt>.  The new buffer's position
       *         will be set to this value.
       *
       * @param  length
       *         The length of the subarray to be used;
       *         must be non-negative and no larger than
       *         <tt>array.length - offset</tt>.
       *         The new buffer's limit will be set to <tt>offset + length</tt>.
       *
       * @return  The new long buffer
       *
       * @throws  IndexOutOfBoundsException
       *          If the preconditions on the <tt>offset</tt> and <tt>length</tt>
       *          parameters do not hold
       */
      public static LongBuffer wrap(long[] array,
                                      int offset, int length)
      {
          try {
              return new HeapLongBuffer(array, offset, length);
          } catch (IllegalArgumentException x) {
              throw new IndexOutOfBoundsException();
          }
      }
  
      /**
       * Wraps a long array into a buffer.
       *
       * <p> The new buffer will be backed by the given long array;
       * that is, modifications to the buffer will cause the array to be modified
       * and vice versa.  The new buffer's capacity and limit will be
       * <tt>array.length</tt>, its position will be zero, and its mark will be
       * undefined.  Its {@link #array backing array} will be the
       * given array, and its {@link #arrayOffset array offset>} will
       * be zero.  </p>
       *
       * @param  array
       *         The array that will back this buffer
       *
       * @return  The new long buffer
       */
      public static LongBuffer wrap(long[] array) {
          return wrap(array, 0, array.length);
      }
  
  
      /**
       * Creates a new long buffer whose content is a shared subsequence of
       * this buffer's content.
       *
       * <p> The content of the new buffer will start at this buffer's current
       * position.  Changes to this buffer's content will be visible in the new
       * buffer, and vice versa; the two buffers' position, limit, and mark
       * values will be independent.
       *
       * <p> The new buffer's position will be zero, its capacity and its limit
       * will be the number of longs remaining in this buffer, and its mark
       * will be undefined.  The new buffer will be direct if, and only if, this
       * buffer is direct, and it will be read-only if, and only if, this buffer
       * is read-only.  </p>
       *
       * @return  The new long buffer
       */
      public abstract LongBuffer slice();
  
      /**
       * Creates a new long buffer that shares this buffer's content.
       *
       * <p> The content of the new buffer will be that of this buffer.  Changes
       * to this buffer's content will be visible in the new buffer, and vice
       * versa; the two buffers' position, limit, and mark values will be
       * independent.
       *
       * <p> The new buffer's capacity, limit, position, and mark values will be
       * identical to those of this buffer.  The new buffer will be direct if,
       * and only if, this buffer is direct, and it will be read-only if, and
       * only if, this buffer is read-only.  </p>
       *
       * @return  The new long buffer
       */
      public abstract LongBuffer duplicate();
  
      /**
       * Creates a new, read-only long buffer that shares this buffer's
       * content.
       *
       * <p> The content of the new buffer will be that of this buffer.  Changes
       * to this buffer's content will be visible in the new buffer; the new
       * buffer itself, however, will be read-only and will not allow the shared
       * content to be modified.  The two buffers' position, limit, and mark
       * values will be independent.
       *
       * <p> The new buffer's capacity, limit, position, and mark values will be
       * identical to those of this buffer.
       *
       * <p> If this buffer is itself read-only then this method behaves in
       * exactly the same way as the {@link #duplicate duplicate} method.  </p>
       *
       * @return  The new, read-only long buffer
       */
      public abstract LongBuffer asReadOnlyBuffer();
  
  
      // -- Singleton get/put methods --
  
      /**
       * Relative <i>get</i> method.  Reads the long at this buffer's
       * current position, and then increments the position.
       *
       * @return  The long at the buffer's current position
       *
       * @throws  BufferUnderflowException
       *          If the buffer's current position is not smaller than its limit
       */
      public abstract long get();
  
      /**
       * Relative <i>put</i> method&nbsp;&nbsp;<i>(optional operation)</i>.
       *
       * <p> Writes the given long into this buffer at the current
       * position, and then increments the position. </p>
       *
       * @param  l
       *         The long to be written
       *
       * @return  This buffer
       *
       * @throws  BufferOverflowException
       *          If this buffer's current position is not smaller than its limit
       *
       * @throws  ReadOnlyBufferException
       *          If this buffer is read-only
       */
      public abstract LongBuffer put(long l);
  
      /**
       * Absolute <i>get</i> method.  Reads the long at the given
       * index.
       *
       * @param  index
       *         The index from which the long will be read
       *
       * @return  The long at the given index
       *
       * @throws  IndexOutOfBoundsException
       *          If <tt>index</tt> is negative
       *          or not smaller than the buffer's limit
       */
      public abstract long get(int index);
  
      /**
       * Absolute <i>put</i> method&nbsp;&nbsp;<i>(optional operation)</i>.
       *
       * <p> Writes the given long into this buffer at the given
       * index. </p>
       *
       * @param  index
       *         The index at which the long will be written
       *
       * @param  l
       *         The long value to be written
       *
       * @return  This buffer
       *
       * @throws  IndexOutOfBoundsException
       *          If <tt>index</tt> is negative
       *          or not smaller than the buffer's limit
       *
       * @throws  ReadOnlyBufferException
       *          If this buffer is read-only
       */
      public abstract LongBuffer put(int index, long l);
  
  
      // -- Bulk get operations --
  
      /**
       * Relative bulk <i>get</i> method.
       *
       * <p> This method transfers longs from this buffer into the given
       * destination array.  If there are fewer longs remaining in the
       * buffer than are required to satisfy the request, that is, if
       * <tt>length</tt>&nbsp;<tt>&gt;</tt>&nbsp;<tt>remaining()</tt>, then no
       * longs are transferred and a {@link BufferUnderflowException} is
       * thrown.
       *
       * <p> Otherwise, this method copies <tt>length</tt> longs from this
       * buffer into the given array, starting at the current position of this
       * buffer and at the given offset in the array.  The position of this
       * buffer is then incremented by <tt>length</tt>.
       *
       * <p> In other words, an invocation of this method of the form
       * <tt>src.get(dst,&nbsp;off,&nbsp;len)</tt> has exactly the same effect as
       * the loop
       *
       * <pre>{@code
       *     for (int i = off; i < off + len; i++)
       *         dst[i] = src.get();
       * }</pre>
       *
       * except that it first checks that there are sufficient longs in
       * this buffer and it is potentially much more efficient.
       *
       * @param  dst
       *         The array into which longs are to be written
       *
       * @param  offset
       *         The offset within the array of the first long to be
       *         written; must be non-negative and no larger than
       *         <tt>dst.length</tt>
       *
       * @param  length
       *         The maximum number of longs to be written to the given
       *         array; must be non-negative and no larger than
       *         <tt>dst.length - offset</tt>
       *
       * @return  This buffer
       *
       * @throws  BufferUnderflowException
       *          If there are fewer than <tt>length</tt> longs
       *          remaining in this buffer
       *
       * @throws  IndexOutOfBoundsException
       *          If the preconditions on the <tt>offset</tt> and <tt>length</tt>
       *          parameters do not hold
       */
      public LongBuffer get(long[] dst, int offset, int length) {
          checkBounds(offset, length, dst.length);
          if (length > remaining())
              throw new BufferUnderflowException();
          int end = offset + length;
          for (int i = offset; i < end; i++)
              dst[i] = get();
          return this;
      }
  
      /**
       * Relative bulk <i>get</i> method.
       *
       * <p> This method transfers longs from this buffer into the given
       * destination array.  An invocation of this method of the form
       * <tt>src.get(a)</tt> behaves in exactly the same way as the invocation
       *
       * <pre>
       *     src.get(a, 0, a.length) </pre>
       *
       * @param   dst
       *          The destination array
       *
       * @return  This buffer
       *
       * @throws  BufferUnderflowException
       *          If there are fewer than <tt>length</tt> longs
       *          remaining in this buffer
       */
      public LongBuffer get(long[] dst) {
          return get(dst, 0, dst.length);
      }
  
  
      // -- Bulk put operations --
  
      /**
       * Relative bulk <i>put</i> method&nbsp;&nbsp;<i>(optional operation)</i>.
       *
       * <p> This method transfers the longs remaining in the given source
       * buffer into this buffer.  If there are more longs remaining in the
       * source buffer than in this buffer, that is, if
       * <tt>src.remaining()</tt>&nbsp;<tt>&gt;</tt>&nbsp;<tt>remaining()</tt>,
       * then no longs are transferred and a {@link
       * BufferOverflowException} is thrown.
       *
       * <p> Otherwise, this method copies
       * <i>n</i>&nbsp;=&nbsp;<tt>src.remaining()</tt> longs from the given
       * buffer into this buffer, starting at each buffer's current position.
       * The positions of both buffers are then incremented by <i>n</i>.
       *
       * <p> In other words, an invocation of this method of the form
       * <tt>dst.put(src)</tt> has exactly the same effect as the loop
       *
       * <pre>
       *     while (src.hasRemaining())
       *         dst.put(src.get()); </pre>
       *
       * except that it first checks that there is sufficient space in this
       * buffer and it is potentially much more efficient.
       *
       * @param  src
       *         The source buffer from which longs are to be read;
       *         must not be this buffer
       *
       * @return  This buffer
       *
       * @throws  BufferOverflowException
       *          If there is insufficient space in this buffer
       *          for the remaining longs in the source buffer
       *
       * @throws  IllegalArgumentException
       *          If the source buffer is this buffer
       *
       * @throws  ReadOnlyBufferException
       *          If this buffer is read-only
       */
      public LongBuffer put(LongBuffer src) {
          if (src == this)
              throw new IllegalArgumentException();
          if (isReadOnly())
              throw new ReadOnlyBufferException();
          int n = src.remaining();
          if (n > remaining())
              throw new BufferOverflowException();
          for (int i = 0; i < n; i++)
              put(src.get());
          return this;
      }
  
      /**
       * Relative bulk <i>put</i> method&nbsp;&nbsp;<i>(optional operation)</i>.
       *
       * <p> This method transfers longs into this buffer from the given
       * source array.  If there are more longs to be copied from the array
       * than remain in this buffer, that is, if
       * <tt>length</tt>&nbsp;<tt>&gt;</tt>&nbsp;<tt>remaining()</tt>, then no
       * longs are transferred and a {@link BufferOverflowException} is
       * thrown.
       *
       * <p> Otherwise, this method copies <tt>length</tt> longs from the
       * given array into this buffer, starting at the given offset in the array
       * and at the current position of this buffer.  The position of this buffer
       * is then incremented by <tt>length</tt>.
       *
       * <p> In other words, an invocation of this method of the form
       * <tt>dst.put(src,&nbsp;off,&nbsp;len)</tt> has exactly the same effect as
       * the loop
       *
       * <pre>{@code
       *     for (int i = off; i < off + len; i++)
       *         dst.put(a[i]);
       * }</pre>
       *
       * except that it first checks that there is sufficient space in this
       * buffer and it is potentially much more efficient.
       *
       * @param  src
       *         The array from which longs are to be read
       *
       * @param  offset
       *         The offset within the array of the first long to be read;
       *         must be non-negative and no larger than <tt>array.length</tt>
       *
       * @param  length
       *         The number of longs to be read from the given array;
       *         must be non-negative and no larger than
       *         <tt>array.length - offset</tt>
       *
       * @return  This buffer
       *
       * @throws  BufferOverflowException
       *          If there is insufficient space in this buffer
       *
       * @throws  IndexOutOfBoundsException
       *          If the preconditions on the <tt>offset</tt> and <tt>length</tt>
       *          parameters do not hold
       *
       * @throws  ReadOnlyBufferException
       *          If this buffer is read-only
       */
      public LongBuffer put(long[] src, int offset, int length) {
          checkBounds(offset, length, src.length);
          if (length > remaining())
              throw new BufferOverflowException();
          int end = offset + length;
          for (int i = offset; i < end; i++)
              this.put(src[i]);
          return this;
      }
  
      /**
       * Relative bulk <i>put</i> method&nbsp;&nbsp;<i>(optional operation)</i>.
       *
       * <p> This method transfers the entire content of the given source
       * long array into this buffer.  An invocation of this method of the
       * form <tt>dst.put(a)</tt> behaves in exactly the same way as the
       * invocation
       *
       * <pre>
       *     dst.put(a, 0, a.length) </pre>
       *
       * @param   src
       *          The source array
       *
       * @return  This buffer
       *
       * @throws  BufferOverflowException
       *          If there is insufficient space in this buffer
       *
       * @throws  ReadOnlyBufferException
       *          If this buffer is read-only
       */
      public final LongBuffer put(long[] src) {
          return put(src, 0, src.length);
      }
  
  
      // -- Other stuff --
  
      /**
       * Tells whether or not this buffer is backed by an accessible long
       * array.
       *
       * <p> If this method returns <tt>true</tt> then the {@link #array() array}
       * and {@link #arrayOffset() arrayOffset} methods may safely be invoked.
       * </p>
       *
       * @return  <tt>true</tt> if, and only if, this buffer
       *          is backed by an array and is not read-only
       */
      public final boolean hasArray() {
          return (hb != null) && !isReadOnly;
      }
  
      /**
       * Returns the long array that backs this
       * buffer&nbsp;&nbsp;<i>(optional operation)</i>.
       *
       * <p> Modifications to this buffer's content will cause the returned
       * array's content to be modified, and vice versa.
       *
       * <p> Invoke the {@link #hasArray hasArray} method before invoking this
       * method in order to ensure that this buffer has an accessible backing
       * array.  </p>
       *
       * @return  The array that backs this buffer
       *
       * @throws  ReadOnlyBufferException
       *          If this buffer is backed by an array but is read-only
       *
       * @throws  UnsupportedOperationException
       *          If this buffer is not backed by an accessible array
       */
      public final long[] array() {
          if (hb == null)
              throw new UnsupportedOperationException();
          if (isReadOnly)
              throw new ReadOnlyBufferException();
          return hb;
      }
  
      /**
       * Returns the offset within this buffer's backing array of the first
       * element of the buffer&nbsp;&nbsp;<i>(optional operation)</i>.
       *
       * <p> If this buffer is backed by an array then buffer position <i>p</i>
       * corresponds to array index <i>p</i>&nbsp;+&nbsp;<tt>arrayOffset()</tt>.
       *
       * <p> Invoke the {@link #hasArray hasArray} method before invoking this
       * method in order to ensure that this buffer has an accessible backing
       * array.  </p>
       *
       * @return  The offset within this buffer's array
       *          of the first element of the buffer
       *
       * @throws  ReadOnlyBufferException
       *          If this buffer is backed by an array but is read-only
       *
       * @throws  UnsupportedOperationException
       *          If this buffer is not backed by an accessible array
       */
      public final int arrayOffset() {
          if (hb == null)
              throw new UnsupportedOperationException();
          if (isReadOnly)
              throw new ReadOnlyBufferException();
          return offset;
      }
  
      // BEGIN Android-added: covariant overloads of *Buffer methods that return this.
      @CovariantReturnType(returnType = LongBuffer.class, presentAfter = 28)
      @Override
      public Buffer position(int newPosition) {
          return super.position(newPosition);
      }
  
      @CovariantReturnType(returnType = LongBuffer.class, presentAfter = 28)
      @Override
      public Buffer limit(int newLimit) {
          return super.limit(newLimit);
      }
  
      @CovariantReturnType(returnType = LongBuffer.class, presentAfter = 28)
      @Override
      public Buffer mark() {
          return super.mark();
      }
  
      @CovariantReturnType(returnType = LongBuffer.class, presentAfter = 28)
      @Override
      public Buffer reset() {
          return super.reset();
      }
  
      @CovariantReturnType(returnType = LongBuffer.class, presentAfter = 28)
      @Override
      public Buffer clear() {
          return super.clear();
      }
  
      @CovariantReturnType(returnType = LongBuffer.class, presentAfter = 28)
      @Override
      public Buffer flip() {
          return super.flip();
      }
  
      @CovariantReturnType(returnType = LongBuffer.class, presentAfter = 28)
      @Override
      public Buffer rewind() {
          return super.rewind();
      }
      // END Android-added: covariant overloads of *Buffer methods that return this.
  
      /**
       * Compacts this buffer&nbsp;&nbsp;<i>(optional operation)</i>.
       *
       * <p> The longs between the buffer's current position and its limit,
       * if any, are copied to the beginning of the buffer.  That is, the
       * long at index <i>p</i>&nbsp;=&nbsp;<tt>position()</tt> is copied
       * to index zero, the long at index <i>p</i>&nbsp;+&nbsp;1 is copied
       * to index one, and so forth until the long at index
       * <tt>limit()</tt>&nbsp;-&nbsp;1 is copied to index
       * <i>n</i>&nbsp;=&nbsp;<tt>limit()</tt>&nbsp;-&nbsp;<tt>1</tt>&nbsp;-&nbsp;<i>p</i>.
       * The buffer's position is then set to <i>n+1</i> and its limit is set to
       * its capacity.  The mark, if defined, is discarded.
       *
       * <p> The buffer's position is set to the number of longs copied,
       * rather than to zero, so that an invocation of this method can be
       * followed immediately by an invocation of another relative <i>put</i>
       * method. </p>
       *
  
       *
       * @return  This buffer
       *
       * @throws  ReadOnlyBufferException
       *          If this buffer is read-only
       */
      public abstract LongBuffer compact();
  
      /**
       * Tells whether or not this long buffer is direct.
       *
       * @return  <tt>true</tt> if, and only if, this buffer is direct
       */
      public abstract boolean isDirect();
  
  
      /**
       * Returns a string summarizing the state of this buffer.
       *
       * @return  A summary string
       */
      public String toString() {
          StringBuffer sb = new StringBuffer();
          sb.append(getClass().getName());
          sb.append("[pos=");
          sb.append(position());
          sb.append(" lim=");
          sb.append(limit());
          sb.append(" cap=");
          sb.append(capacity());
          sb.append("]");
          return sb.toString();
      }
  
  
      /**
       * Returns the current hash code of this buffer.
       *
       * <p> The hash code of a long buffer depends only upon its remaining
       * elements; that is, upon the elements from <tt>position()</tt> up to, and
       * including, the element at <tt>limit()</tt>&nbsp;-&nbsp;<tt>1</tt>.
       *
       * <p> Because buffer hash codes are content-dependent, it is inadvisable
       * to use buffers as keys in hash maps or similar data structures unless it
       * is known that their contents will not change.  </p>
       *
       * @return  The current hash code of this buffer
       */
      public int hashCode() {
          int h = 1;
          int p = position();
          for (int i = limit() - 1; i >= p; i--)
              h = 31 * h + (int) get(i);
          return h;
      }
  
      /**
       * Tells whether or not this buffer is equal to another object.
       *
       * <p> Two long buffers are equal if, and only if,
       *
       * <ol>
       *
       *   <li><p> They have the same element type,  </p></li>
       *
       *   <li><p> They have the same number of remaining elements, and
       *   </p></li>
       *
       *   <li><p> The two sequences of remaining elements, considered
       *   independently of their starting positions, are pointwise equal.
  
       *   </p></li>
       *
       * </ol>
       *
       * <p> A long buffer is not equal to any other type of object.  </p>
       *
       * @param  ob  The object to which this buffer is to be compared
       *
       * @return  <tt>true</tt> if, and only if, this buffer is equal to the
       *           given object
       */
      public boolean equals(Object ob) {
          if (this == ob)
              return true;
          if (!(ob instanceof LongBuffer))
              return false;
          LongBuffer that = (LongBuffer)ob;
          if (this.remaining() != that.remaining())
              return false;
          int p = this.position();
          for (int i = this.limit() - 1, j = that.limit() - 1; i >= p; i--, j--)
              if (!equals(this.get(i), that.get(j)))
                  return false;
          return true;
      }
  
      private static boolean equals(long x, long y) {
  
  
          return x == y;
  
      }
  
      /**
       * Compares this buffer to another.
       *
       * <p> Two long buffers are compared by comparing their sequences of
       * remaining elements lexicographically, without regard to the starting
       * position of each sequence within its corresponding buffer.
       *
       *
       *
       *
       *
       *
       *
       *
       * Pairs of {@code long} elements are compared as if by invoking
       * {@link Long#compare(long,long)}.
  
       *
       * <p> A long buffer is not comparable to any other type of object.
       *
       * @return  A negative integer, zero, or a positive integer as this buffer
       *          is less than, equal to, or greater than the given buffer
       */
      public int compareTo(LongBuffer that) {
          int n = this.position() + Math.min(this.remaining(), that.remaining());
          for (int i = this.position(), j = that.position(); i < n; i++, j++) {
              int cmp = compare(this.get(i), that.get(j));
              if (cmp != 0)
                  return cmp;
          }
          return this.remaining() - that.remaining();
      }
  
      private static int compare(long x, long y) {
  
  
          return Long.compare(x, y);
  
      }
  
      // -- Other char stuff --
  
  
      // -- Other byte stuff: Access to binary data --
  
  
      /**
       * Retrieves this buffer's byte order.
       *
       * <p> The byte order of a long buffer created by allocation or by
       * wrapping an existing <tt>long</tt> array is the {@link
       * ByteOrder#nativeOrder native order} of the underlying
       * hardware.  The byte order of a long buffer created as a <a
       * href="ByteBuffer.html#views">view</a> of a byte buffer is that of the
       * byte buffer at the moment that the view is created.  </p>
       *
       * @return  This buffer's byte order
       */
      public abstract ByteOrder order();
  
  
  }
  