在java的tutorial中有这样一段描述
Joins
The join method allows one thread to wait for the completion of another. If t is a Thread object whose thread is currently executing,
t.join();
causes the current thread to pause execution until t's thread terminates. Overloads of join allow the programmer to specify a waiting period. However, as with sleep, join is dependent on the OS for timing, so you should not assume that join will wait exactly as long as you specify.
Like sleep, join responds to an interrupt by exiting with an InterruptedException.
怎么感觉红色的两句话有点自相矛盾呢。
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不矛盾，t.join();之后先是执行t，再执行当前线程；第一句话中所谓的one thread指的是当前运行的线程，another指的是线程t
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join 等同于排队。
我排在你后面哦，我【等】你做完了，我再继续做。