Life cycle of a thread

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Life cycle of a thread

A thread goes through various stages in its lifecycle.  The following diagram shows the complete life cycle of a thread.

 

Following are the stages of the life cycle −

New − A new thread begins its life cycle in the new state. It remains in this state until the program starts the thread. It is also referred to as a born thread.

Runnable − After a newly born thread is started, the thread becomes runnable. A thread in this state is considered to be executing its task.

 Waiting − Sometimes, a thread transitions to the waiting state while the thread waits for another thread to perform a task. Thread transitions back to the runnable state only when another thread signals the waiting thread to continue executing.

Terminated (Dead) − A runnable thread enters the terminated state when it completes its task or otherwise terminates.

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