WHAT IS A SCHEDULER? Firstly know about what is scheduling. Scheduling is a process that executing a task in a certain time period. A scheduler is a tool, the main objective is to implement the scheduling process. Mainly scheduler is used to perform the batch task for the repeated manner and perform the action of task without any outer other events. IMPLEMENTATION OF SCHEDULER IN SPRING BOOT: In spring boot we can implement scheduler in multiple ways but here we use the annotation to implement the scheduler. In spring boot we can implement scheduler using @Scheduled annotation. The @Scheduled annotation internally uses the TaskScheduler interface to schedule a task. To enable the @Scheduled annotation we must use @EnableScheduling annotation in the Configuration file. Let's start with an example of task scheduler. Her we use STS(spring tool suite) to build the spring boot project. First, b...