How does countdownlatch work in Java thread count?

How does countdownlatch work in Java thread count?

CountDownLatch works by having a counter initialized with number of threads, which is decremented each time a thread complete its execution. When count reaches to zero, it means all threads have completed their execution, and thread waiting on latch resume the execution.

When to call countdownlatch.await ( ) in Java?

This main thread must call, CountDownLatch.await () method immediately after starting other threads. The execution will stop on await () method till the time, other threads complete their execution. Other N threads must have reference of latch object, because they will need to notify the CountDownLatch object that they have completed their task.

Which is the first interaction with countdownlatch?

The first interaction with CountDownLatch is with main thread which is goind to wait for other threads. This main thread must call, CountDownLatch.await () method immediately after starting other threads. The execution will stop on await () method till the time, other threads complete their execution.

Is the countdownlatch a common interview question in Java?

CountDownLatch concept is very common interview question in java concurrency, so make sure you understand it well. In this post, I will cover following points related to CountDownLatch in java concurrency.

How to make a countdown timer in Unity?

Making a countdown timer in Unity involves storing a float time value and subtracting the duration of the last frame (the delta time) every frame to make it count down. To then display the float time value in minutes and seconds, both values need to be calculated individually.

CountDownLatch works by having a counter initialized with number of threads, which is decremented each time a thread complete its execution. When count reaches to zero, it means all threads have completed their execution, and thread waiting on latch resume the execution.

How to share a countdown to any date?

Share your countdown by copying the web address (URL). The countdown automatically adjusts for DST changes in the selected location. Need some help?

This main thread must call, CountDownLatch.await () method immediately after starting other threads. The execution will stop on await () method till the time, other threads complete their execution. Other N threads must have reference of latch object, because they will need to notify the CountDownLatch object that they have completed their task.