scheduleAtFixedRate vs scheduleWithFixedDelay

Question

What\'s the main difference between scheduleAtFixedRate and scheduleWithFixedDelay methods of ScheduledExecutorService?

scheduler.s         


        

Answer 1

Visualize time series of invocation scheduleAtFixedRate method. Next executions will start immediately if the last one takes longer than period. Otherwise, it will start after period time.

Time series of invocation scheduleWithFixedDelay method. Next execution will start after delay time between termination of one execution and the commencement of the next, regardless of its execution time

Hope can help you