toolchain/gcc/libjava/java/lang/Object.java

   1 // Object.java - The root of all evil.
   2
   3 /* Copyright (C) 1998, 1999, 2000  Free Software Foundation
   4
   5    This file is part of libgcj.
   6
   7 This software is copyrighted work licensed under the terms of the
   8 Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
   9 details.  */
  10
  11 package java.lang;
  12
  13 /**
  14  * @author Tom Tromey <tromey@cygnus.com>
  15  * @date September 30, 1998
  16  */
  17
  18 /* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
  19  * "The Java Language Specification", ISBN 0-201-63451-1
  20  * plus online API docs for JDK 1.2 beta from http://www.javasoft.com.
  21  * plus gcj compiler sources (to determine object layout)
  22  * Status:  Complete to version 1.1
  23  */
  24
  25 public class Object
  26 {
  27   // This must come first.  See _JvObjectPrefix in Object.h.
  28   protected void finalize () throws Throwable
  29   {
  30   }
  31
  32   public final native Class getClass ();
  33   public native int hashCode ();
  34   public final native void notify ();
  35   public final native void notifyAll ();
  36   public final native void wait (long timeout, int nanos)
  37     throws InterruptedException;
  38
  39   public boolean equals (Object obj)
  40   {
  41     return this == obj;
  42   }
  43
  44   public Object ()
  45   {
  46   }
  47
  48   public String toString ()
  49   {
  50     return getClass().getName() + '@' + Integer.toHexString(hashCode());
  51   }
  52
  53   public final void wait () throws InterruptedException
  54   {
  55     wait (0, 0);
  56   }
  57
  58   public final void wait (long timeout) throws InterruptedException
  59   {
  60     wait (timeout, 0);
  61   }
  62
  63   protected native Object clone () throws CloneNotSupportedException;
  64
  65   // This initializes the sync_info member.  It is here for
  66   // completeness (some day we'll be able to auto-generate Object.h).
  67   private final native void sync_init ();
  68
  69   // Note that we don't mention the sync_info field here.  If we do,
  70   // jc1 will not work correctly.
  71 }