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Priority Of A Thread In Java

Thread Priority
 
Thread priorities are represented in number between 1 and 10. Thread scheduler schedules the threads , according to their priority, which are referred as a preemptive scheduling. There is no guarantee, because it fully depends on JVM specification that which scheduling, it chooses.
 
Each thread has a priority.
 
Three constants are defined in Thread class, which are,
 
public static int MIN_PRIORITY
 
public static int NORM_PRIORITY
 
public static int MAX_PRIORITY
 
By default thread priority is 5 (NORM_PRIORITY).
 
The value of MIN_PRIORITY is 1 and the value of MAX_PRIORITY is 10.
 
Let’s see an example, given below.
 
Code
  1. public class ThreadPriority extends Thread {  
  2.     public void run() {  
  3.         System.out.println("Current thread name is:" + Thread.currentThread().getName());  
  4.         System.out.println("Current thread priority is:" + Thread.currentThread().getPriority());  
  5.     }  
  6.     public static void main(String args[]) {  
  7.         ThreadPriority p1 = new ThreadPriority();  
  8.         p1.setPriority(Thread.MIN_PRIORITY);  
  9.         p1.start();  
  10.     }  
  11. }  
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Output

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In the above example, we get the running thread name that is “Thread-0” and running thread minimum priority that is 1.
 
Summary

Thus, we learnt, by default, the thread priority is 5, MIN_PRIORITY is 1 and MAX_PRIORITY is 10 and also learnt, how we can use the thread priority in Java.