public class Main {
	public static void main (String argv[]) {
		Thread tA, tB;
		boolean doYield = false;

		if (argv.length == 1) {
			if (argv[0].equals("true"))
				doYield = true;
		}
		else {
			System.err.println("Wrong number of arguments.");
			System.out.println("Usage : java Main true|false");
			return;
		}

		if (doYield)
			System.out.println("Do yield");
		else
			System.out.println("NOT do yield");

		tA = new DispTask(doYield, "tA");
		tB = new DispTask(doYield, "tB");

		tA.start();
		tB.start();
	}
}