TIMEDWAITING

Timed Waiting is a state in Java's thread lifecycle managed by the Java Virtual Machine (JVM). It indicates that a thread is waiting for a specified period of time before it transitions to a different state, such as runnable or terminated. This state is part of the Thread.State enumeration, which includes other states like NEW, RUNNABLE, BLOCKED, WAITING, and TERMINATED.

A thread enters the TIMED_WAITING state primarily through methods that specify a timeout period. These include Thread.sleep(milliseconds), Object.wait(milliseconds), Thread.join(milliseconds), and java.util.concurrent.locks.Lock.lockInterruptibly() with a timeout. When a thread calls one of these methods, it pauses execution for the specified duration or until the condition is met, whichever occurs first.

While in this state, the thread remains inactive but is eligible to move back to the RUNNABLE state once the timeout expires or the wait condition is notified or interrupted. If interrupted while in the TIMED_WAITING state, an InterruptedException is thrown, allowing for responsive thread interruption handling.

The TIMED_WAITING state is useful for controlling thread execution timing, implementing time-limited waiting, or preventing indefinite blocking. Proper management of thread states, including TIMED_WAITING, is essential for concurrent programming to ensure thread coordination and resource management.