RaceDemo.java

import java.util.*;
import java.io.*;
public class RaceDemo {
	public static void main(String[] args) {
		Racer racer = new Racer();
		Thread tortoiseThread = new Thread(racer, "Tortoise");
		Thread hareThread = new Thread(racer, "Hare");
		//Race to start. tell threads to start
		tortoiseThread.start();
		hareThread.start();
		
		
	}
}

class Racer implements Runnable {
	
	public static String winner;
	public void race(){
	
		for(int distance=1;distance<=100;distance++){
			System.out.println("Distance Covered by "+Thread.currentThread().getName()+ "is:"+distance +"meters");
			//Check if race is complete if some one has already won
			boolean isRaceWon = this.isRaceWon(distance);
			if(isRaceWon){
				break;
			}
		}
	}
	
	private boolean isRaceWon(int totalDistanceCovered){
		boolean isRaceWon =  false;
		if((Racer.winner==null )&&(totalDistanceCovered==100)){
				String winnerName = Thread.currentThread().getName();
				Racer.winner = winnerName; //setting the winner name
				System.out.println("Winner is :"+Racer.winner);
				isRaceWon = true;
			}else if(Racer.winner==null){
			isRaceWon = false;
			}else if(Racer.winner!=null){
				isRaceWon = true;
			}
		return isRaceWon;
		}

	@Override
	public void run() {
		this.race();
		
	}
	
}