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Learn Java - Java tutorial - Thread priority in java - Java examples - Java programs
- Each thread has a priority.
- The priorities are represented by a number among 1 and 10.
- In the majority cases, thread scheduler schedules threads according to their priority (called as preemptive scheduling).
- But it is not guaranteed because it depends on JVM specification that which scheduling it chooses.
Constants of in Thread class
- public static int MIN_PRIORITY public static int NORM_PRIORITY public static int MAX_PRIORITY
- Default priority of a thread is 5 (NORM_PRIORITY). The value of MIN_PRIORITY is 1 and then the value of MAX_PRIORITY is 10.
Sample Code
public class MultiPriority extends Thread{
public void run(){
System.out.println("running thread name is:"+Thread.currentThread().getName());
System.out.println("running thread priority is:"+Thread.currentThread().getPriority());
}
public static void main(String args[]){
MultiPriority p1=new MultiPriority();
MultiPriority p2=new MultiPriority();
p1.setPriority(Thread.MIN_PRIORITY);
p2.setPriority(Thread.MAX_PRIORITY);
p1.start();
p2.start();
}
} click below button to copy the code. By - java tutorial - team
Output
running thread name is:Thread-1
running thread name is:Thread-0
running thread priority is:10
running thread priority is:1