// Philosopher thread in Java
// George F. Riley, ECE3055, Spring 2003

class Philosopher extends Thread {
    private int myId;
    private Object cond;
    private Object mutex;
    static  volatile private int doneCount = 0;

    Philosopher(int id, Object c, Object m)
    {
        myId = id;   // Set thread identifier
        cond = c;    // Save condition variable to use
        mutex = m;   // Save mutex object
    }

    public void run()
    {
        System.out.println("Hello from philosopher " + myId);
        yield();
        synchronized(mutex) {
            doneCount++;
            System.out.println("Philosopher " + myId +
                               " doneCount " + doneCount);
            if (doneCount == 5) {
                synchronized(cond) {
                    cond.notify();  // Notify main thread all done
                }
            }
        }
        System.out.println("Philosopher " + myId + " exiting");
    }
}