Private mutable thread blinker
Public invalid site () {
blinker = null
}
Public invalid operation () {
thread this thread = thread . current thread()；
while (blinker == thisThread) {
Try {
ThisThread.sleep (interval);
} catch (InterruptedException e){
}
repaint()；
}
}
See/docs/books/jls/second _ edition/html/classes.doc.html # 36930 for the reason of using volatile keyword.
When a thread is not running, it is not running if it is:
When the sleep method is called.
When the wait method is called.
When blocked by I/O, it may be a file or a network, etc.
When the thread is in the above state, the method described above cannot be used. At this time, we can use interrupt () to break the blocking situation, for example:
Public invalid site () {
Thread tmpBlinker = blinker
blinker = null
if (tmpBlinker！ = null) {
tmpblinker . interrupt()；
}
} InterruptedException will be thrown when calling interrupt (), so you can catch this exception in the run method and let the thread exit safely:
Try {
....
wait()；
} catch(interrupted exception iex){
Throw new runtime exception ("interrupted", iex);
}
Source reference:/yedeqixian/item/fe89dd3e4bbf215180f1a761