Java ThreadPoolExecutor 的 submit 和 execute 方法有什么区别
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What is the difference between submit and execute method with ThreadPoolExecutor
提问by virsir
I found there are two ways (submit and execute) to add a Runnable into a thread pool, what is the difference?
我发现有两种方式（提交和执行）将 Runnable 添加到线程池中，有什么区别？
采纳答案by ColinD
The difference is that executedoesn't return a Future, so you can't wait for the completion of the Runnableand get any exception it throws using that.
不同之处在于execute它不返回 a Future，因此您不能等待完成Runnable并使用它获得它抛出的任何异常。
回答by AdamH
Submit appears to be a more generic form of execute. In particular, submit returns a Future object that represents the result of the computation.
提交似乎是一种更通用的执行形式。特别是， submit 返回一个表示计算结果的 Future 对象。
回答by Victor Sorokin
The submit(...)method is an executor framework extension introduced in ExecutorServiceinterface.
该submit(...)方法是ExecutorService接口中引入的执行器框架扩展。
Its main difference from execute(Runnable)is that submit(...)can accept a Callable<V>(whereas execute()accepts only Runnable) and returns an instance of Future<V>, which you can use later in the caller to retrieve the result asynchronously (potentially blocking until the computation performed by the Callableis completed).
它与 的主要区别execute(Runnable)在于submit(...)可以接受 a Callable<V>（而execute()仅接受Runnable）并返回 的实例Future<V>，您可以稍后在调用者中使用它来异步检索结果（可能会阻塞，直到 执行的计算Callable完成）。
