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Diffstat (limited to 'libjava/gnu/java/io/ObjectIdentityWrapper.java')
-rw-r--r-- | libjava/gnu/java/io/ObjectIdentityWrapper.java | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/libjava/gnu/java/io/ObjectIdentityWrapper.java b/libjava/gnu/java/io/ObjectIdentityWrapper.java deleted file mode 100644 index f06e2057ecb..00000000000 --- a/libjava/gnu/java/io/ObjectIdentityWrapper.java +++ /dev/null @@ -1,89 +0,0 @@ -/* ObjectIdentityWrapper.java -- Wrapper class used to override equals() - and hashCode() to be as discriminating as possible - Copyright (C) 1998 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. - -As a special exception, if you link this library with other files to -produce an executable, this library does not by itself cause the -resulting executable to be covered by the GNU General Public License. -This exception does not however invalidate any other reasons why the -executable file might be covered by the GNU General Public License. */ - - -package gnu.java.io; - -/** - This class is a thin wrapper around <code>Object</code> that makes - the methods <code>hashCode()</code> and <code>equals(Object)</code> - as discriminating as possible. -*/ -public class ObjectIdentityWrapper -{ - - /** - Constructs a <code>ObjectIdentityWrapper</code> that is wrapped - around o. - */ - public ObjectIdentityWrapper( Object o ) - { - object = o; - } - - /** - Uses <code>System.identityHashCode(Object)</code> to compute a - hash code for the object wrapped by this - <code>ObjectIdentityWrapper</code>. - - @see java.lang.System#identityHashCode(java.lang.Object) - @see java.util.Hashtable - @see java.lang.Object#hashCode() - */ - public int hashCode() - { - return System.identityHashCode( object ); - } - - /** - Uses the <code>==</code> operator to test for equality between - the object wrapped by this <code>ObjectIdentityWrapper</code> and - the object wrapped by the <code>ObjectIdentityWrapper</code> o. - Returns false if o is not a <code>ObjectIdentityWrapper</code>. - - @see java.util.Hashtable - @see java.lang.Object#equals() - */ - public boolean equals( Object o ) - { - if( o instanceof ObjectIdentityWrapper ) - return object == ((ObjectIdentityWrapper)o).object; - else - return false; - } - - public String toString() - { - return "ObjectIdentityWrapper< " + object + ", " + hashCode() + " >"; - } - - /** - The <code>Object</code> wrapped by this - <code>ObjectIdentityWrapper</code>. - */ - public Object object; -} |