Timer class uses Object wait and notify methods to schedule the tasks. TimerTask is an abstract class and we inherit it to provide concrete implementation. TimerTask class implements Runnable interface so it is a thread and hence your implementation of TimerTask is also a thread. Timer class uses to add tasks at given regular interval and at any time there can be only one thread running the TimerTask, for example if you are creating a Timer to run every 10 seconds but single thread execution takes 20 seconds, then Timer object will keep adding tasks to the queue and as soon as one thread is finished, it will notify the queue and another thread will start executing. Timer class is thread safe and multiple threads can share a single Timer object without need for external synchronization.

In case of sleep method the process is shown as work in progress whereas the operation is set to hold. So, if you want to pause the execution for 5 seconds, you would need to pass 5000 in the sleep method. Java Timer class can be used to schedule a task to be run one-time or to be run at regular intervals.

is an abstract class that implements Runnable interface and we need to extend this class to create our own TimerTask that can be scheduled using java Timer class. Thread.Sleep() The sleep method accepts the input in milliseconds. is a utility class that can be used to schedule a thread to be executed at certain time in future.

Java Timer class can be used to schedule a task to be run one-time or to be run at regular intervals.

is a utility class that can be used to schedule a thread to be executed at certain time in future.

Java timer utility pause resum