1，如果线程t通过Object的wait、或者线程的join 、sleep方法被阻塞， 那么当你（在当前线程中）对t发送t.interrupt 消息时， t的中断为被清除，同时t将收到 InterruptedException 异常。

2，如果t阻塞在的I/O操作中， 这时对t 发送中断消息会将t 的中断为置1， 并将收到 an 异常， 同时 io管道关闭。

3，如果线程t阻塞在 Selector 中， t收到中断消息后立马退出，不会收到异常。

public void interrupt ()

Added in 

Posts an interrupt request to this Thread. The behavior depends on the state of this Thread:

• Threads blocked in one of Object's wait() methods or one of Thread's join() or sleep() methods will be woken up, their interrupt status will be cleared, and they receive an .

• Threads blocked in an I/O operation of an  will have their interrupt status set and receive an. Also, the channel will be closed.

• Threads blocked in a  will have their interrupt status set and return immediately. They don't receive an exception in this case.

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