Below is the syntax highlighted version of TigerBook.java.
/************************************************************************* Reference solution for Spring 2013 COS 126 Programming Exam 2: TigerBook Author: COS 126 Staff Netid: cos126 Precepts: lots of them Dependencies: Person, ST Description: Models a collection of users (Person objects) each with a unique id (String). **************************************************************************/ public class TigerBook { private ST<String, Person> users; // map each id to a user // Constructor public TigerBook() { users = new ST<String, Person>(); } // Add a person to the list of users. // We are allowed to assume this id was not registered yet. public void register(String id, Person p) { users.put(id, p); } // Return the person registered with this id. // Throw a RuntimeException if no such person exists. public Person lookup(String id) { // Was this id String registered? if (!users.contains(id)) throw new RuntimeException("User id not found"); // return the right Person return users.get(id); } }