Package org.djutils.event.ref

Class WeakReference<T extends Serializable>

java.lang.Object

org.djutils.event.ref.Reference<T>

org.djutils.event.ref.WeakReference<T>

Type Parameters:

T - the type of the reference

All Implemented Interfaces:

Serializable

public class WeakReference<T extends Serializable>
extends Reference<T>

A WeakReference. The WeakReference extends the java.lang.ref.WeakReference and besides implementing the Reference interface no changes are defined.

Copyright (c) 2002-2021 Delft University of Technology, Jaffalaan 5, 2628 BX Delft, the Netherlands. All rights reserved. See for project information https://djutils.org. The DJUTILS project is distributed under a three-clause BSD-style license, which can be found at https://djutils.org/docs/license.html. This class was originally part of the DSOL project, see https://simulation.tudelft.nl/dsol/manual.

Author:

Peter Jacobs , Alexander Verbraeck

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
WeakReference(T referent)	Creates a new weak reference that refers to the given object.

Method Summary

Modifier and Type	Method	Description
T	get()	Returns this reference object's referent.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

WeakReference

public WeakReference(T referent)

Creates a new weak reference that refers to the given object. The new reference is not registered with any queue.

Parameters:

referent - T; object the new weak reference will refer to

Method Detail

get

public final T get()

Returns this reference object's referent. If this reference object has been cleared, either by the program or by the garbage collector, then this method returns null.

Specified by:

get in class Reference<T extends Serializable>

Returns:

The object to which this reference refers, or null if this reference object has been cleared.