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Possible Duplicates:
ExecutorService, how to wait for all tasks to finish
Java ExecutorService: awaitTermination of all recursively created tasks
有没有办法阻塞当前线程，直到 ExecutorService 完成它的所有任务？
executor.execute(task1);
executor.execute(task2);
executor.execute(task3);
executor.execute(task4);
executor.execute(task5);
// ...now I want to block until all tasks have finished executing...
System.out.println("done!")
最佳答案
对于你所有的任务，将它们放入一个 List callables 然后在它们上调用 All
ExecutorService e = ...
e.invokeAll(callables);
根据 javadocs
Executes the given tasks, returning a list of Futures holding their status and results when all complete. Future.isDone() is true for each element of the returned list. Note that a completed task could have terminated either normally or by throwing an exception. The results of this method are undefined if the given collection is modified while this operation is in progress.
因此线程会一直等到所有任务都完成
关于java - 阻塞直到 ExecutorService 完成，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/6374744/