Executes the given tasks, returning a list of Futures holding
their status and results when all complete.
{@link Future#isDone} is {@code true} for each
element of the returned list.
Note that a <em>completed</em> 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.
@param tasks the collection of tasks
@param (T) the type of the values returned from the tasks
@return a list of Futures representing the tasks, in the same
sequential order as produced by the iterator for the
given task list, each of which has completed
@throws InterruptedException if interrupted while waiting, in
which case unfinished tasks are cancelled
@throws NullPointerException if tasks or any of its elements are {@code null}
@throws RejectedExecutionException if any task cannot be
scheduled for execution
Executes the given tasks, returning a list of Futures holding their status and results when all complete. {@link Future#isDone} is {@code true} for each element of the returned list. Note that a <em>completed</em> 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.
@param tasks the collection of tasks @param (T) the type of the values returned from the tasks @return a list of Futures representing the tasks, in the same sequential order as produced by the iterator for the given task list, each of which has completed @throws InterruptedException if interrupted while waiting, in which case unfinished tasks are cancelled @throws NullPointerException if tasks or any of its elements are {@code null} @throws RejectedExecutionException if any task cannot be scheduled for execution