/**
 * @author Ronald Koster
 */
public class Singleton {

	private static Singleton instance = null;

	private Singleton() {}

	/**
	 * This is a class (static) method. So this should work in a multi-threaed environment as well. See the
	 * "The Java Language Specification - Second Edition", section "<tt>synchronized</tt> Methods": For a class (static) method,
	 * the lock associated with the Class object for the method's class is used. For an instance method, the lock associated with
	 * this (the object for which the method was invoked) is used.
	 */
	public static synchronized Singleton getInstance() {
		if (instance == null) {
			instance = new Singleton();
		}
		return instance;
	}
}