Thread States

A thread can be in one of the following states:

1. NEW: A thread that has not yet started is in this state.
2. RUNNABLE: A thread executing in the Java virtual machine is in this state.
3. BLOCKED: A thread that is blocked waiting for a monitor lock is in this state.
4. WAITING: A thread that is waiting indefinitely for another thread to perform a particular action is in this state.
5. 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.
6. TERMINATED: A thread that has exited is in this state.

A thread can be in only one state at a given point in time. These states are virtual machine states which do not reflect any operating system thread states.

References:

1. https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Thread.State.html