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Importance of Thread Priority in Java?
In multi-threaded applications, each thread is assigned with a priority. The processor is assigned to the thread by the thread scheduler based on its priority i.e. the highest priority thread is assigned the processor first and so on. The default priority of a thread with a value of '5'. We can get the priority of a thread using the getPriority() method of Thread class.
The three static values defined in the Thread class for the priority of a thread
MAX_PRIORITY
This is the maximum thread priority with a value of 10.
NORM_PRIORITY
This is the default thread priority with a value of 5.
MIN_PRIORITY
This is the minimum thread priority with a value of 1.
Syntax
public final int getPriority()
Example
public class ThreadPriorityTest extends Thread {
public static void main(String[]args) {
ThreadPriorityTest thread1 = new ThreadPriorityTest();
ThreadPriorityTest thread2 = new ThreadPriorityTest();
ThreadPriorityTest thread3 = new ThreadPriorityTest();
System.out.println("Default thread priority of thread1: " + thread1.getPriority());
System.out.println("Default thread priority of thread2: " + thread2.getPriority());
System.out.println("Default thread priority of thread3: " + thread3.getPriority());
thread1.setPriority(8);
thread2.setPriority(3);
thread3.setPriority(6);
System.out.println("New thread priority of thread1: " + thread1.getPriority());
System.out.println("New thread priority of thread2: " + thread2.getPriority());
System.out.println("New thread priority of thread3: " + thread3.getPriority());
}
}Output
Default thread priority of thread1: 5 Default thread priority of thread2: 5 Default thread priority of thread3: 5 New thread priority of thread1: 8 New thread priority of thread2: 3 New thread priority of thread3: 6
Updated on: 03-Jul-2020
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