Singleton.java

class Singleton
{
	private static Singleton inst;

	public Singleton (String password)
	{
		if (!password.equals("tajne heslo")) {
			throw new Exception("Nemuzes vyrobit instanci :-P");
		}
	}

	public Singleton getInstance()
	{
		if (inst == null) {
			inst = new Singleton("tajne heslo");
		}
		return inst;
	}
}