Code in Java

Problem: GuessMasterA Date Guessing Game

Lets create a game that allows users to guess the birthday of a named entity, e.g., a celebrity, country, or prominent leader. It requires a human player trying to guess the correct birthday held secretly in the computer program (e.g. Justin Trudeau was born on December 25, 1971). To start, the program welcomes the human player and inform him/her whose birthday to guess. More specifically, from a set of entities saved or hard-coded in the program, the program randomly picks one entity (e.g., a celebrity or country) and print the name on the screen and ask the user to guess the birth date. After reading the answer from console (no need for graphic user interface (GUI) at this point), the program responds with Incorrect. Try an earlier date. or Incorrect. Try a later date., if the users guess is incorrect, or BINGO. You got it! if the user is right. The user can type quit to exit the game.

Working Flow You may start with creating a folder, e.g., GuessMaster, in your computer to host this project. You will need to use Date.java that we discussed in the last lecture of week 3; the file will be delivered together with this assignment handout. Copy Date.java to your GuessMaster folder. In Date.java, add one more constructor public Date(String strDate), which can initialize the class by taking into a string like 12/25/1971. The constructor may use the split method in String, the static method parseInt in the wrapper class Integer, and the setDate() mutator in the Date Class, but you should feel free to use whatever classes you would like to implement this constructor. Define the class Entity, which can hold the information of a named entity such as a person or a country. The class has two instance variables as shown below: private String name; private Date born; Create all needed constructors, mutators, and accessors. Create a copy constructor for Entity that does not have a privacy leak issue. Define a toString() method that return the content of an entity as a string, e.g., Celine Dion, born on March 30, 1968 or Eiffel Tower, born on March 31, 1889. Define a method boolean equals(Entity entity) to compare content of two entitiesrefer to our lectures or textbook for examples. Define a class GuessMaster, which has two instance variables: private int numberOfCandidateEntities; private Entity[ ] entities; The first variable indicates how many candidate entities are used in this game, and entities holds these entities. Although one may use other data types such as ArrayList to hold entities, lets use Entity[ ] entities in this assignment. In GuessMaster, create proper constructors, accessors, and methods. Feel free to define GuessMaster as you would like. The following methods are just some suggestions you may consider. public void addEntity(Entity entity): This method add a new entity into entities; public void playGame(Entity entity): Given an entity, play the guessing game with regard to that entity. Note that you may want to use the precedes(Date otherDate) method. public void playGame(int entityInd): Given an entity index (e.g., 1), use the index to fetch the (e.g., 2nd) entity from entities and play the guessing game with regard to that entity. This method may invoke the public void playGame(Entity entity) defined above. public void playGame(): This method will generate a random number first, which will be then used to randomly pick an entity from entities. The method then invokes public void playGame(int entityInd) to play a game. Note that the game will keep going until the user type quit as described above. int genRandomEntityInd(): This is helping method used by public void playGame(). The main methods. This is the entrance of the game. You can initialize the game and start to play with it. We will test your code with the follow initialization. But please feel free to add whatever entities you want your users to play with. Entity trudeau = new Entity(Justin Trudeau, new Date(December, 25, 1971)); Entity dion = new Entity(Celine Dion, new Date(March, 30, 1968)); Entity usa = new Entity(United States, new Date(July, 4, 1776)); GuessMaster gm = new GuessMaster(); gm.addEntity(trudeau); gm.addEntity(dion); gm.addEntity(usa); After the initialization, you can start your game. GAME RULES To start, greet the human player and inform him/her whose birthday to guess; e.g., you can print the name of a celebrity or country on the screen. The user tries to guess by typing his/her answer in the following format: 12/25/1971. Feel free to allow users to type different formats of dates but we will evaluate your code using the above format.

Game continues to accept users guesses until the player gets the correct birthday. If a guess is incorrect, the system should output either Incorrect. Try an earlier date. or Incorrect. Try a later date. If a users guess is correct, you can output BINGO. You got it!!. Then, the system randomly pick the next question from the entity array. The user can type quit to exit the game anytime when he was asked a question.