1. New state: A new Thread object was created.
2. Ready state (Runnable): After the thread object is created, other threads call the object's start () method. The state of the thread is located in a pool of running threads that becomes operational and waits for the CPU to be used.
3, running State (Running): The ready state of the thread gets the CPU, executes the program code.
4, blocking state (Blocked): Blocking state is the thread for some reason to abandon the use of the CPU, temporarily stop running. Until the thread is in a ready state, the opportunity to go to the running state is reached. There are three types of blocking:
(i), waiting for blocking: The running thread executes the wait () method, and the JVM puts the thread into the waiting pool. (wait will release the held lock)
(ii), synchronous blocking: When a running thread acquires a synchronization lock on an object, the JVM puts the thread into the lock pool if the synchronization lock is occupied by another thread.
(iii), other blocking: The running thread executes the sleep () or join () method, or when an I/O request is made, the JVM will place the thread in a blocked state. When the sleep () state times out, join () waits for the thread to terminate or time out, or the I/O process finishes, the thread is re-entered in a ready state. (Note that sleep does not release held locks)
5. Dead State (Dead): The thread finishes executing or exits the run () method because of an exception, and the thread ends the life cycle.
look at the picture:
Ext.: Http://blog.csdn.net/evankaka
Java Multithreaded State transitions
