从java.lang.Thread.State可以看到java线程有以下状态：
NEW
A thread that has not yet started is in this state.
RUNNABLE
A thread executing in the Java virtual machine is in this state.
BLOCKED
A thread that is blocked waiting for a monitor lock
is in this state.
WAITING
A thread that is waiting indefinitely for another thread to
perform a particular action is in this state.
TIMED_WAITING
A thread that is waiting for another thread to perform an action
for up to a specified waiting time is in this state.
TERMINATED
A thread that has exited is in this state.
These states are virtual machine states which do not reflect any operating system thread states.
操作系统定义的线程状态有：
新建，就绪，阻塞，运行，死亡。
java线程状态BLOCKED，WAITING，TIMED——WAITING对应操作系统线程的阻塞状态。
线程状态的转换
原文地址：http://8365613.blog.51cto.com/8355613/1900171
