/** 
 * File $CISC370HOME/example-progs/threads/vacationRace/version1/SimpleThread.java
 *
 * This code is based on an example from"The Java Tutorial"
 * by Campione and Walrath. It implements threads by subclassing the
 * java.lang.Thread class whereas version 2 uses threads by implementing
 * the interface Runnable.
 */


// The Thread class is in the java.lang package that is automatically
// included in all Java programs.

class SimpleThread extends Thread
{
    public SimpleThread( String str )	// Constructor w name for thread
    {
        super( str );
    }

    // Must override this method.  It is called via start().
    public void run()
    {
        for (int i = 0; i < 10; i++)
        {
            // getName is a instance method from the Thread class
            System.out.println( i + " " + getName() );
            try
            {
                // sleep() is a static method from the class Thread
                sleep( (int)(Math.random()*5000) ); 
            }
            catch ( InterruptedException e ) {}
        }
        System.out.println( "DONE! " + getName() );
        // The thread dies a natural death when run() completes
    }

    public static void main( String arg[] )
    {
        // Every thread must be created (w new) and started (w 
        // the start method) to have any effect.
        // The start method creates the system resources necessary to
        // run the thread, schedules the thread to run, and calls
        // the thread's run method.

        // These threads help to determine where to take your vacation.
        // They "race" from 0-9 with each sleeping for a random period
        // of time between each increment of their counter.  The first
        // one to win determines the place for you to go on your vacation!

        // Every thread has a name, in this case the names are Hawaii
        // and Fiji.

        new SimpleThread( "Hawaii" ).start(); // start() sets up a thread
        new SimpleThread( "Fiji" ).start();   // and then invokes run()
    }
}