/**
* A thread state. A thread can be in one of the following states:
*
- {@link #NEW}
* A thread that has not yet started is in this state.
*
- {@link #RUNNABLE}
* A thread executing in the Java virtual machine is in this state.
*
- {@link #BLOCKED}
* A thread that is blocked waiting for a monitor lock
* is in this state.
*
- {@link #WAITING}
* A thread that is waiting indefinitely for another thread to
* perform a particular action is in this state.
*
- {@link #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.
*
- {@link #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.
*
* @since 1.5
* @see #getState
*/
public enum State {
/**
* Thread state for a thread which has not yet started.
*/
NEW,
/**
* Thread state for a runnable thread. A thread in the runnable
* state is executing in the Java virtual machine but it may
* be waiting for other resources from the operating system
* such as processor.
*/
RUNNABLE,
/**
* Thread state for a thread blocked waiting for a monitor lock.
* A thread in the blocked state is waiting for a monitor lock
* to enter a synchronized block/method or
* reenter a synchronized block/method after calling
* {@link Object#wait() Object.wait}.
*/
BLOCKED,
/**
* Thread state for a waiting thread.
* A thread is in the waiting state due to calling one of the
* following methods:
*
- {@link Object#wait() Object.wait} with no timeout
- {@link #join() Thread.join} with no timeout
- {@link LockSupport#park() LockSupport.park}
*
*
*
*
*
*
A thread in the waiting state is waiting for another thread to
* perform a particular action.
*
* For example, a thread that has called Object.wait()
* on an object is waiting for another thread to call
* Object.notify() or Object.notifyAll() on
* that object. A thread that has called Thread.join()
* is waiting for a specified thread to terminate.
*/
WAITING,
/**
* Thread state for a waiting thread with a specified waiting time.
* A thread is in the timed waiting state due to calling one of
* the following methods with a specified positive waiting time:
*
- {@link #sleep Thread.sleep}
- {@link Object#wait(long) Object.wait} with timeout
- {@link #join(long) Thread.join} with timeout
- {@link LockSupport#parkNanos LockSupport.parkNanos}
- {@link LockSupport#parkUntil LockSupport.parkUntil}
*
*
*
*
*
*
*/
TIMED_WAITING,
/**
* Thread state for a terminated thread.
* The thread has completed execution.
*/
TERMINATED;
}