• August 29, 2014
  • Core Java
  • Comments Off on Thread priority in java

Thread priority in java

Thread priority:

Thread priority represents a number between 1 to 10. It helps the operating system to determine the order in which threads are scheduled.

Static fields for thread priority defined in Thread class:

1. public static final int MIN_PRIORITY

The minimum priority that a thread can have.

Default value : 1

2. public static final int NORM_PRIORITY

The default priority that is assigned to a thread.

Default value : 5

3. public static final int MAX_PRIORITY

The maximum priority that a thread can have.

Default value : 10

Example:

ThreadPriorityExample.java

/**
 * This program is used to show the thread priority example.
 * @author javawithease
 */
class Test extends Thread{
	public void run(){
		System.out.println("Priority of running thread: " + 
				Thread.currentThread().getPriority());
	}
}
 
public class ThreadPriorityExample {
	public static void main(String args[]){
		//creating thread.
		Test thrd1 = new Test();
		Test thrd2 = new Test();
		Test thrd3 = new Test();
 
		//set thread priority.
		thrd1.setPriority(Thread.MIN_PRIORITY);
		thrd2.setPriority(Thread.NORM_PRIORITY);
		thrd3.setPriority(Thread.MAX_PRIORITY);
 
		//start the thread.
		thrd1.start();
		thrd2.start();
		thrd3.start();
	}
}

Output:

Priority of running thread: 1
Priority of running thread: 5
Priority of running thread: 10

Download this example.
 
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Previous Topic: Thread scheduling in java with example.

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