Java Reference
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For example, it would be safe to publish
mouseListeners
or
keyListeners
in
Visu-
alComponent
. Because
VisualComponent
does not impose any constraints on the val-
id states of its listener lists, these fields could be made public or otherwise published without
compromising thread safety.
4.3.5. Example: Vehicle Tracker that Publishes Its State
Let's construct another version of the vehicle tracker that publishes its underlying mutable
state. Again, we need to modify the interface a little bit to accommodate this change, this
time using mutable but thread-safe points.
Listing 4.11. Thread-safe Mutable Point Class.
