线程池关系图

Executors
  • has：ThreadPoolExecutor
    • use：DefaultThreadFactory
    • def：execute方法
    • is：AbstractExecutorService
      • imp：ExecutorService
        • is：Executor
          • declare：execute(Runnable run)
        • declare：submit、innvokeAll、shutdown、isterminated
      • def：submit方法
        • 将runnable或者callable对象转换成FutureTask<T>
        • 随后将上面得到的对象作为execute的参数
  • def：DefaultThreadFactory (ref ThreadPoolExecutor)
  • def：RunnableAdapter (ref FutureTask)

FutureTask
  • imp：RunnableFuture
    • is：Runnable
      • declare：run
    • is：Future
      • declare：isCancelled, cancel, isDone, get
  • use：RunnableAdapter
  • def：run、isDone、isCancelled、cancel
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