java - 如果将来的任务抛出异常，线程是否返回到执行器服务的线程池？

Question

我有 ThreadPoolExecutor 的简单用例。我想确保在线程执行期间如果出现任何类型的运行时异常，线程是否会返回到池中。如何验证？

ExecutorService pool = Executors.newFixedThreadPool(30);
pool.submit(new MyThread())
boolean jobExecutionStatus =true 
try{
       for (Future<Boolean> future : futureArrayList){
                if (jobExecutionStatus){
                    jobExecutionStatus = future.get();
                }
                else{
                    break;
                }

            }
        }
        catch (InterruptedException | ExecutionException e){
            jobExecutionStatus = false;
        }

Answer 1

不，如果抛出异常，则会创建新的线程(仅在必要时)。

来自javadoc :

If any thread terminates due to a failure during execution prior to shutdown, a new one will take its place if needed to execute subsequent tasks.