Implementing Generic Classes

• Example: simple generic class that stores pairs of objects

  Pair<String, BankAccount> result
        = new Pair<String, BankAccount>("Harry Hacker", harrysChecking);

• The getFirst and getSecond retrieve first and second values of pair

  String name = result.getFirst();
  BankAccount account = result.getSecond();

• Example of use: return two values at the same time (method returns a Pair)
• Generic Pair class requires two type variables

  public class Pair<T, S>