Life Cycle of a Thread in Java
Life cycle of a Thread (Thread States)
A thread can be in one of the five states. According to sun, there
is only 4 states in thread life cycle in java new, runnable,
non-runnable and terminated. There is no running state.
But for better understanding the threads, we are explaining it in
the 5 states.
The life cycle of the thread in java is controlled by JVM. The
java thread states are as follows:
- New
- Runnable
- Running
- Non-Runnable (Blocked)
- Terminated
1) New
The thread is in new state if you create
an instance of Thread class but before the invocation of start() method.
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2) Runnable
The thread is in runnable state after invocation of start()
method, but the thread scheduler has not selected it to be the running thread.
3) Running
The thread is in running state if the thread scheduler has
selected it.
4) Non-Runnable (Blocked)
This is the state when the thread is still alive, but is currently
not eligible to run.
5) Terminated
A thread is in terminated or dead state when its run() method
exits.
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