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#87 Thread Priority and Sleep in Java

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In this lecture we will learn:
– Thread priority in Java
– How we can suggest a priority for a thread?
– Sleep() method in thread
– Waiting state in a thread

#1
– We cannot control the schedular, we can only give suggestions to it to give priority.
– getPriority() is a method that gives the current priority of a thread.
– The range of priority goes from 1 to 10. One is the least priority whereas ten is the maximum priority.
– 5 is the default priority or normal priority. By default, every thread has a normal priority which is 5.
– We can also change the priority by using the setPriority().
– Different schedulers have different algorithms to work upon so by giving priority, we can only give suggestions to it.
– It might be possible that the scheduler gives the highest priority to the process that will execute in less time at the running phase.

#2
– We can also make a thread to wait for some time and then execute the statement further.
– Thread will wait by using the sleep() method.
– In the sleep() method, we have the pass value for how much time we want a thread to wait. The time will be in milliseconds.
– Sleep() method will throw an interrupted exception. So, we can handle an exception by using the try-catch block.
– When we use sleep(), then the thread goes into the waiting state.

– As a programmer, we can not control a thread, we can only optimise it.

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