"Java concurrency Programming" 14, Thread, threading description

Status of Threads: New, Runnable, Blocked, waiting, Timed waiting, Terminated

1. RUNNABLE, corresponding to the "Ready" and "running" states, that is, in the ready and running state of the thread in the Java.lang.Thread is displayed as "RUNNABLE"
2. BLOCKED, corresponding to the "blocking" state, this thread needs to obtain a lock to continue execution, and this lock is currently held by other threads, so entered a passive wait state, until the lock was grabbed, will again enter the "Ready" state
3. Waiting, which corresponds to a "blocking" state, indicates that the thread is in an indefinite active wait until it is awakened by someone, and it will again enter the ready state
4. Timed_waiting, which corresponds to a "blocking" state, means that the thread is in an active wait with a deadline, or someone wakes it up or waits for a certain amount of time before it gets ready again

"Java concurrency Programming" 14, Thread, threading description