33ea7335b1
* Moves business-delegate pattern to java 11 * Moves bytecode pattern to java 11 * Moves caching pattern to java 11 * Moves callback pattern to java 11 * Moves chain pattern to java 11 * Moves circuit-breaker pattern to java 11 * Moves collection-pipeline pattern to java 11 * Moves command pattern to java 11 * Moves commander pattern to java 11 * Moves composite pattern to java 11 * Corrects test cases
layout, title, folder, permalink, categories, tags
| layout | title | folder | permalink | categories | tags | ||||
|---|---|---|---|---|---|---|---|---|---|
| pattern | Callback | callback | /patterns/callback/ | Other |
|
Intent
Callback is a piece of executable code that is passed as an argument to other code, which is expected to call back (execute) the argument at some convenient time.
Applicability
Use the Callback pattern when
- when some arbitrary synchronous or asynchronous action must be performed after execution of some defined activity.
Real world examples
- CyclicBarrier constructor can accept callback that will be triggered every time when barrier is tripped.