import java.util.*;

class Task implements Runnable {
    public void run() {
        try {
            Thread.sleep(1000);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

public class CurtisLeeOSProj {
    //counts number of threads
    private static int counter ;
    public static void main(String[] args) {
        //ArrayList to store threads in
        List threadList = new ArrayList();
        long starting_mem = Runtime.getRuntime().freeMemory();
        //Display initial system memory
        System.out.printf("Starting Memory = %d kilobytes",starting_mem/(1024));
        //While loop in a try catch statement that creates thread until memory runs out
        while (true) {
            try {
                Task task = new Task();
                Thread worker = new Thread(task);
                worker.start();
                threadList.add(task);
                Thread.currentThread().interrupt();
                counter++;
                //ends loop when memory runs out
            } catch (OutOfMemoryError e) {
                //display ending system memory
                long endMem = Runtime.getRuntime().freeMemory();
                System.out.printf("Ending Memory = %d kilobytes\n", (endMem/1024));
                System.out.printf("Remaining memory = %d kilobytes\n",(starting_mem - endMem)/(1024));
                System.out.printf("Threads Created = %d\n" , counter);
                break;
            }
        }
    }
}