Package org.djutils.event.reference

Class Reference<T>

java.lang.Object
org.djutils.event.reference.Reference<T>
Type Parameters:
T - the type of the reference
Direct Known Subclasses:
StrongReference, WeakReference
public abstract class Reference<T> extends Object
The Reference abstract class defines an indirect pointer to an object. References can be weak or strong. Java does not have an object type for a strong reference.

Copyright (c) 2002-2025 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

  • Constructor Details

    • Reference

      public Reference()

  • Method Details

    • get

      public abstract 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.
      Returns:
      The object to which this reference refers, or null if this reference object has been cleared.