Simple thread interference example

Nondeterministic.java

public class Nondeterministic {

	private int x = 0;
	private int y = 1;

	/*
	 * What happens when you synchronize only the write()?
	 * A synchrnoized method is like a bathroom with a door but without walls
	 */

	/*
	 * public void write() { x = 2; y = 3; System.out.println("x: " + x +
	 * ", y: " + y); }
	 */

	public synchronized void write() {
		x = 2;
		y = 3;
		System.out.println("write: x: " + x + ", y: " + y);
	}

	public void read() {
		System.out.println("read: x: " + x + ", y: " + y);
		x = 0;
		y = 1;
	}

	public static void main(String[] args) {
		final Nondeterministic nd = new Nondeterministic();
		Thread t1 = new Thread(new Runnable() {
			@Override
			public void run() {
				while (true)
				{
					nd.read();
					try {
						Thread.sleep(500);
					} catch (InterruptedException e) {
						e.printStackTrace();
					}
				}
			}
		});

		Thread t2 = new Thread(new Runnable() {
			@Override
			public void run() {
				while (true) {
					nd.write();
					try {
						Thread.sleep(500);
					} catch (InterruptedException e) {
						e.printStackTrace();
					}
				}
			}
		});

		t1.start();
		t2.start();
	}

}