How can a class have no constructor?

//Initialize this stuff with some crap
string appVirtualDir = "/";
string appPhysicalDir = @"C:Documents and Settings";
string page = @"localhost";
string query = string.Empty;
TextWriter output = null;
//Create a SimpleWorkerRequest object passing down the crap
SimpleWorkerRequest workerRequest = new SimpleWorkerRequest(appVirtualDir, appPhysicalDir, page, query, output);
//Create your fake HttpContext instance
HttpContext.Current = new HttpContext(workerRequest);

MyClass c = new MyClass();

MyClass c = MyClass.getInstance();

Class A{
public static readonly A Instance = new A();

private A()
{
}

}