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Thread priorities





  • Thread scheduler will use thread priority while allocating processor.
  • Thread that has high priority will get the chance first to execute.
  • Thread defines the following method to get and set priority of a thread.
  • public final int getPriority()
  • public final int setPriority(int p)
  • Here p range is 1 to 10 otherwise RE:IllegalArguementException


Program example 1:


class MyThread extends Thread
{
   
}
class Priority
{
    public static void main(String args[])
    {
        System.out.println(Thread.currentThread().getPriority());
        //System.out.println(Thread.CurrentThread().setPriority(15));
        //RE:IllegalStateException
        System.out.println(Thread.currentThread());
       
        Thread t=new Thread();
        t.start();
        System.out.println(t.getPriority());
       
    }
}

output:




Program example 2:


class MyThread extends Thread
{
   
}
class Priority
{
    public static void main(String args[])
    {
        System.out.println(Thread.currentThread().getPriority());
        //System.out.println(Thread.CurrentThread().setPriority(15));
        //RE:IllegalStateException
        System.out.println(Thread.currentThread());
       
        Thread t=new Thread();
        t.start();
        t.setPriority(6);
        System.out.println(t.getPriority());
       
    }
}

output:











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