ConcurrentModificationException

CMETest.java

import java.util.ConcurrentModificationException;
import java.util.ArrayList;
public class CMETest {
	public static void main (String[] args) {
		ArrayList<Integer> numbers = new ArrayList<>();
		int qty = Integer.MAX_VALUE/20;
		for (int i=0; i<qty; i++) {
			numbers.add(i);
		}
		
		Thread thrd1 = new Thread( () -> {
			numbers.add(0);
			numbers.remove(1);
		});
		Thread thrd2 = new Thread( () -> {
			try {
				for (int i : numbers) {
					
				}
			} catch (ConcurrentModificationException cme) {
			cme.printStackTrace();
			Thread.getAllStackTraces().keySet().forEach(thread ->  {
				String toPrint = thread.getName() + "\t\tSTATE: " + thread.getState() 
						+ "\t\tINTERRUPTED?" + (thread.isInterrupted() ? "Y" : "N");
				System.out.println(toPrint);
			});
		}
		});
		thrd2.start(); thrd1.start();
	}
}