What is the name of this reference class design pattern?

Question

Is there a name for the design pattern where a single class is written to contain references to commonly used objects, which are usually singletons? And is it wise to use such a class or is there a better way to do this?

Here's an example:

public class References {
  AccountManager accountManager = new AccountManager();
  UserManager userManager = new UserManager();
  TransactionHandler handler = new TransactionHandler();
  Calculator calc = new Calculator();
  /// etc.
}