1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/rt/emul/compact/src/main/java/java/lang/ref/WeakReference.java	Tue Feb 26 16:54:16 2013 +0100
     1.3 @@ -0,0 +1,72 @@
     1.4 +/*
     1.5 + * Copyright (c) 1997, 2003, Oracle and/or its affiliates. All rights reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.  Oracle designates this
    1.11 + * particular file as subject to the "Classpath" exception as provided
    1.12 + * by Oracle in the LICENSE file that accompanied this code.
    1.13 + *
    1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.16 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.17 + * version 2 for more details (a copy is included in the LICENSE file that
    1.18 + * accompanied this code).
    1.19 + *
    1.20 + * You should have received a copy of the GNU General Public License version
    1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.23 + *
    1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.25 + * or visit www.oracle.com if you need additional information or have any
    1.26 + * questions.
    1.27 + */
    1.28 +
    1.29 +package java.lang.ref;
    1.30 +
    1.31 +
    1.32 +/**
    1.33 + * Weak reference objects, which do not prevent their referents from being
    1.34 + * made finalizable, finalized, and then reclaimed.  Weak references are most
    1.35 + * often used to implement canonicalizing mappings.
    1.36 + *
    1.37 + * <p> Suppose that the garbage collector determines at a certain point in time
    1.38 + * that an object is <a href="package-summary.html#reachability">weakly
    1.39 + * reachable</a>.  At that time it will atomically clear all weak references to
    1.40 + * that object and all weak references to any other weakly-reachable objects
    1.41 + * from which that object is reachable through a chain of strong and soft
    1.42 + * references.  At the same time it will declare all of the formerly
    1.43 + * weakly-reachable objects to be finalizable.  At the same time or at some
    1.44 + * later time it will enqueue those newly-cleared weak references that are
    1.45 + * registered with reference queues.
    1.46 + *
    1.47 + * @author   Mark Reinhold
    1.48 + * @since    1.2
    1.49 + */
    1.50 +
    1.51 +public class WeakReference<T> extends Reference<T> {
    1.52 +
    1.53 +    /**
    1.54 +     * Creates a new weak reference that refers to the given object.  The new
    1.55 +     * reference is not registered with any queue.
    1.56 +     *
    1.57 +     * @param referent object the new weak reference will refer to
    1.58 +     */
    1.59 +    public WeakReference(T referent) {
    1.60 +        super(referent);
    1.61 +    }
    1.62 +
    1.63 +    /**
    1.64 +     * Creates a new weak reference that refers to the given object and is
    1.65 +     * registered with the given queue.
    1.66 +     *
    1.67 +     * @param referent object the new weak reference will refer to
    1.68 +     * @param q the queue with which the reference is to be registered,
    1.69 +     *          or <tt>null</tt> if registration is not required
    1.70 +     */
    1.71 +    public WeakReference(T referent, ReferenceQueue<? super T> q) {
    1.72 +        super(referent, q);
    1.73 +    }
    1.74 +
    1.75 +}