How to extend a singleton class to handle a specific number of objects

In Java, I have created a singleton class as follows:

public class Singleton 
{   
    private Singleton() { print("Singleton Constructor"); }
    private static Singleton pointer = new Singleton();//static here so only one object 
    public static Singleton makeSingleton()
    {
        return pointer;
    }

    public static void main (String args[]) 
    {
        Singleton nuReference = Singleton.makeSingleton();
        if(nuReference == pointer)
        {
            print("Both are references for same object.");
        }
    }
}

Here, only the reference to an already-created object of Singleton class is being returned. How can I create a class so that only, say, four objects of that class are allowed to be created? Can I use this Singleton class for that or do I have to make it from scratch?

Oh, and print() is my custom method here. Works the same as System.out.println(), just with fewer keystrokes :)

That should work:

public class Singleton
{
      private Singleton()
      {
            print("Constructor");
      }

      private static Singleton instances[] = new Singleton[4];

      private static Boolean initiated = false;

      public static Singleton getInstance(int index)
      {
          tryInitiate();

          if(instances[index] == null)
          {
              instances[index] = new Singleton();
          }

          return instances[index];
      }

      private static Boolean tryInitiate()
      {
          if(initiated) return false;

          for (int i = 0; i < instances.length; i++)
          {
              instances[i] == null;
          }

          initiated = true;

          return true;
      }
}

Instead of initiating the objects with "null" you could also instantiate the objects during the initiation. But this way only the needed objects are instantiated.