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## java.util.concurrent
Interface RejectedExecutionHandler

All Known Implementing Classes:
  ThreadPoolExecutor.AbortPolicy, ThreadPoolExecutor.CallerRunsPolicy, ThreadPoolExecutor.DiscardOldestPolicy, ThreadPoolExecutor.DiscardPolicy

    public interface RejectedExecutionHandler

A handler for tasks that cannot be executed by a `ThreadPoolExecutor`.

Since:
  1.5

Method Summary
`void` | `rejectedExecution(Runnable r, ThreadPoolExecutor executor)` Method that may be invoked by a `ThreadPoolExecutor` when `execute` cannot accept a task.

Method Detail

### rejectedExecution

    void rejectedExecution(Runnable r,
                           ThreadPoolExecutor executor)

  Method that may be invoked by a `ThreadPoolExecutor` when `execute` cannot accept a task. This may occur when no more threads or queue slots are available because their bounds would be exceeded, or upon shutdown of the Executor.

  In the absence of other alternatives, the method may throw an unchecked `RejectedExecutionException`, which will be propagated to the caller of `execute`.

  Parameters:
    `r` - the runnable task requested to be executed
    `executor` - the executor attempting to execute this task
  Throws:
    `RejectedExecutionException` - if there is no remedy

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