public static void main(String[] args) {
	final Display display = new Display();
	Shell shell = new Shell(display);
	shell.setLayout(new FillLayout());
	Button button = new Button(shell, SWT.PUSH);
	button.setText("Press me to test responsiveness");
	shell.pack();
	shell.open();
	display.timerExec(1000, new Runnable() {
		public void run() {
			System.out.println("Time: " + System.currentTimeMillis());
			display.timerExec(1000, this);
		}
	});
	Thread thread = new Thread() {
		public void run() {
			System.out.println("Running thread.");
			double result = 0.0;
			long last = System.currentTimeMillis();
			for(int i = 0; i < 99999999; i++) {
				double think = 5 + (double) i;
				int harder = (int) Math.cos(think);
				double foo = Math.sin((double)harder) * Math.sqrt(think);
				result += foo;
				if (i % 100000 == 0) {
					long cur = System.currentTimeMillis();
					System.out.println("Hello " + i / 100000 + " (" + (cur - last) + " ms)");
					last = cur;
				}
			}
			System.out.println("Done.");
		}
	};
	thread.start();
	while (!shell.isDisposed()) {
		if (!display.readAndDispatch())
			display.sleep();
	}
	display.dispose();
}