在java中，要让线程等待最普通的方法是调用Object.wait()方法，
Causes the current thread to wait until another thread invokes the notify() method for this object.
但是当我阅读JUC（...
文章ali清英
2016-04-01
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LockSupport 源码阅读
在java中，要让线程等待最普通的方法是调用Object.wait()方法，
Causes the current thread to wait until another thread invokes the notify() method for this object.
但是当我阅读JUC（...
Design a parking lot.
see CC150 OO Design for details.
1) n levels, each level has m rows of spots and each row has k spots.So each level has m x k s...
