Object.java   [plain text]

/* java.lang.Object - The universal superclass in Java
   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2004
   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.lang;

/**
 * @author Tom Tromey <tromey@cygnus.com>
 * @date September 30, 1998 
 */

/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
 * "The Java Language Specification", ISBN 0-201-63451-1
 * plus online API docs for JDK 1.2 beta from http://www.javasoft.com.
 * plus gcj compiler sources (to determine object layout)
 * Status:  Complete to version 1.1
 */

public class Object
{
  // This must come first.  See _JvObjectPrefix in Object.h.
  protected void finalize () throws Throwable
  {
  }

  public final native Class getClass ();
  public native int hashCode ();
  public final native void notify ();
  public final native void notifyAll ();
  public final native void wait (long timeout, int nanos)
    throws InterruptedException;

  public boolean equals (Object obj)
  {
    return this == obj;
  }

  public Object ()
  {
  }

  public String toString ()
  {
    return getClass().getName() + '@' + Integer.toHexString(hashCode());
  }

  public final void wait () throws InterruptedException
  {
    wait (0, 0);
  }

  public final void wait (long timeout) throws InterruptedException
  {
    wait (timeout, 0);
  }

  protected native Object clone () throws CloneNotSupportedException;

  // This initializes the sync_info member.  It is here for
  // completeness (some day we'll be able to auto-generate Object.h).
  private final native void sync_init ();

  // Note that we don't mention the sync_info field here.  If we do,
  // jc1 will not work correctly.
}