Lock-free thread-safe singleton

One of the best implementations of the singleton pattern in Java relies on the fact that a class is loaded a single time. By instantiating the static member directly when declared, we make sure that we have a single instance of the class. This implementation avoids locking mechanisms and additional checking to see whether the instance has already been created:

public class LockFreeSingleton
{
  private static final LockFreeSingleton instance = new 
  LockFreeSingleton();
  private LockFreeSingleton()
  {
    System.out.println("Singleton is Instantiated."); 
  }
  public static synchronized LockFreeSingleton getInstance()
  {
    return instance;
  }
  public void doSomething()
  {
    System.out.println("Something is Done.");
  }
}