Dfyjkt

I have 2 threads and a main class in my program and whenever I try and run it, The one thread is giving me an IllegalThreadStateException and I'm not sure why. The program needs to make a tortoise and hare race, the tortoise can move 10 meters and never stop until he reaches 300 meters, and the hare can move 100 meters, but needs to rest 90% of the time. Following is my code, if anyone could help me out I would appreciate it. Additionally, when I did get it to run, the Hare thread is just outputting Hare: 0 a million times, so I'm not sure why that is happening either.

Main Class:

package runnerthread;

public class RunnerThread extends Thread

 public static void main(String args) 
 System.out.println("Get set...Go!");
 int hPosition = Hare.position;
 int tPosition = Tortoise.position;
 Thread hare = new Thread(new Hare());
 Thread tortoise = new Thread(new Tortoise());
 try
 while(hPosition<300 && tPosition<300)
 tortoise.start();
 hare.start();
 Thread.sleep(300);
 
 catch(InterruptedException e)

Tortoise thread:

public class Tortoise extends Thread 
 static int position;
 static int speed = 10;
 @Override
 public void run()
 position = speed + 10;
 System.out.println("Tortoise: "+position);
 

Hare thread:

import java.util.Random;


public class Hare extends Thread
 static int position;
 int speed = 100;
 int restingPercent = 90;
 Random random = new Random();
 int randomNum = random.nextInt((100-1)+1) + 1;
 @Override
 public void run()
 while(position<300)
 if (randomNum<=restingPercent)
 System.out.println("Hare: "+position);
 else 
 position+=100;
 System.out.println("Hare: "+position);
 

You cannot call start more than once on a thread. Thread Objects cannot be reused. You can use a Runnable for that purpose. For more info check this answer: https://stackoverflow.com/a/2324114/10632970