Use the Java Thread class to demonstrate the following funct

Use the Java Thread class to demonstrate the following functionalities:

(1)

Create five threads; show the id for each thread – getId()

(2)

Show the use of the following methods (be creative in your code):

start(), sleep(), yield(), getState(), setName(), getName(),

setPriority(), getPriority() -- Make sure to show threads are processed

with different priority (be creative)

* As a minimum, discuss the conditions resulted from exceptions – examine the Throws section of each method, to base your code discussions.

Solution

//start(), sleep(), yield(), setName(), setPriority(),
class Demo implements Runnable
{
   public void run()
   {
       //Thread State
       Thread.State state = Thread.currentThread().getState();
       //Thread ID
        System.out.println(\"Thread Id = \" + Thread.currentThread().getId());
       //Thread Name
       System.out.println(\"Thread Name = \" + Thread.currentThread().getName());
       //Thread Priority
       System.out.println(\"Thread Priority = \" + Thread.currentThread().getPriority());
       //Thread State Display
       System.out.println(\"Thread State = \" + state);
       //Yields the current thread
       Thread.yield();
       //Exception handling
       try
       {
           //Takes the thread to sleep
           Thread.sleep(2000);
       }
       catch(InterruptedException ie)      
       {
           System.out.println(Thread.currentThread());
       }
   }
}

public class threadDemo
{
   public static void main(String ss[])
   {
       //Creates 5 objects
       Demo td1 = new Demo();
       Demo td2 = new Demo();
       Demo td3 = new Demo();
       Demo td4 = new Demo();
       Demo td5 = new Demo();

       //Creates 5 threads and assigns object to it
       Thread t1 = new Thread(td1);
       Thread t2 = new Thread(td2);
       Thread t3 = new Thread(td3);
       Thread t4 = new Thread(td4);
       Thread t5 = new Thread(td5);

       //Sets the name and priority of each thread
       t1.setName(\"First\");   t1.setPriority(3);
       t2.setName(\"Second\");   t2.setPriority(6);
       t3.setName(\"Third\");   t3.setPriority(8);
       t4.setName(\"Fourth\");   t4.setPriority(1);
       t5.setName(\"Fifth\");   t4.setPriority(2);

       //Stats each thread
       t1.start();
       t2.start();
       t3.start();
       t4.start();
       t5.start();
   }
}

Output

Thread Id = 12
Thread Name = Third
Thread Priority = 8
Thread State = RUNNABLE
Thread Id = 14
Thread Id = 11
Thread Name = Fifth
Thread Name = Second
Thread Priority = 5
Thread Id = 13
Thread Id = 10
Thread Priority = 6
Thread State = RUNNABLE
Thread Name = First
Thread Priority = 3
Thread State = RUNNABLE
Thread Name = Fourth
Thread State = RUNNABLE
Thread Priority = 2
Thread State = RUNNABLE