simple android trial checking!

trial.java

private void trial() {
	Calendar expirationDate = Calendar.getInstance();
	expirationDate.set(2015, 3, 15); // hardcoded expiration date
	Calendar t = Calendar.getInstance(); // Calendar with current time/date

	if (t.compareTo(expirationDate) == 1) {
		finish();
		Toast.makeText(getApplicationContext(),"Your Trial have been EXPIRED!", Toast.LENGTH_SHORT).show();
	}
}