The ThreadPoolExecutor class in Java is part of the java.util.concurrent package and provides a powerful way to manage a pool of worker threads. It allows you to run tasks asynchronously, making it ideal for concurrent programming.
Java ThreadPoolExecutor Methods
The table below contains various methods of the Java ThreadPoolExecutor class, each with a link to a detailed explanation, examples, and real-world uses. Click on the method names to learn more about how to use them effectively in your applications.
| Method | Description |
|---|---|
| afterExecute() | Method invoked upon completion of the given Runnable or Callable. |
| allowCoreThreadTimeOut() | Sets the policy governing whether core threads may time out. |
| awaitTermination() | Blocks until all tasks have completed execution after a shutdown request. |
| execute() | Executes the given task sometime in the future. |
| getActiveCount() | Returns the approximate number of threads that are actively executing tasks. |
| getMaximumPoolSize() | Returns the maximum allowed number of threads. |
| getTaskCount() | Returns the approximate total number of tasks that have been scheduled for execution. |
| getThreadFactory() | Returns the thread factory used to create new threads. |
| isTerminated() | Returns true if all tasks have completed following shut down. |
| purge() | Removes all cancelled tasks from the work queue. |
| remove() | Tries to remove from the work queue all Future tasks that have been cancelled. |
| setCorePoolSize() | Sets the core number of threads. |
| setThreadFactory() | Sets the thread factory used to create new threads. |
| shutdown() | Initiates an orderly shutdown in which previously submitted tasks are executed, but no new tasks will be accepted. |
| shutdownNow() | Attempts to stop all actively executing tasks, halts the processing of waiting tasks, and returns a list of the tasks that were awaiting execution. |
The ThreadPoolExecutor class in Java provides a flexible and robust way to manage a pool of worker threads, allowing for efficient execution of tasks in parallel. Understanding these methods helps in leveraging the full power of concurrency in Java.
For more detailed information, please refer to the official Java SE Documentation.