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Exercise

Programming Projects 1 and 2 asked you to write a program to play a simple trivia game consisting of five questions. The questions, answers, and point values were hardcoded into array(s). This programming project involves moving the trivia questions into one or more binary files instead, and then loading the trivia questions into memory when the program starts.

First, write a program that allows an administrator to manage the questions for the trivia game. When the program is run, it should check to see if a data file exists. If the data file exists, then the trivia questions should be loaded from the data file into array(s) in memory. If the data file does not exist, start the program with no trivia questions in memory. The program should then present a menu that allows the administrator to list all trivia items (question, answer, and value) in the database, add a new trivia item, or delete an existing trivia item. Upon exiting the program, the trivia data in memory should be stored to one or more binary files using the writeObject method.

Second, modify either solution to Programming Projects 1 or 2 to read in the trivia data from the binary file created by the administrator’s program. Note that the game is no longer limited to five questions, since an arbitrary number of trivia items may be created by the administrator’s program and stored in the binary file(s).

Project 1

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Exercise

Write a program that plays a simple trivia game. The game should have five questions. Each question has a corresponding answer and point value between 1 and 3 based on the difficulty of the question. Implement the game using three arrays. An array of type String should be used for the questions. Another array of type String should be used to store the answers. An array of type int should be used for the point values. All three arrays should be declared to be of size 5.

The index into the three arrays can be used to tie the question, answer, and point value together. For example, the item at index 0 for each array would correspond to question 1, answer 1, and the point value for question 1. The item at index 1 for each array would correspond to question 2, answer 2, and the point value for question 2, and so forth. Manually hardcode the five questions, answers, and point values into your program using trivia of your choice.

Your program should ask the player each question one at a time and allow the player to enter an answer. If the player’s answer matches the actual answer, the player wins the number of points for that question. If the player’s answer is incorrect, the player wins no points for the question. Your program should show the correct answer if the player is incorrect. After the player has answered all five questions, the game is over, and your program should display the player’s total score.

Project 2

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Exercise

Modify Programming Project to use a single array instead of three arrays. This can be accomplished by creating a Trivia object that encapsulates the question, answer, and point value for a particular trivia question. Next, create a single array of five Trivia objects instead of three separate arrays for the question, answer, and point values. This change will make your game more scalable if there were ever additional properties to add to a Trivia object (you would not need to add another array for each property). Although the program has internally changed to a single array of objects, the execution of the program should be identical to before.

Project

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Exercise

Write a program that plays a simple trivia game. The game should have five questions. Each question has a corresponding answer and point value between 1 and 3 based on the difficulty of the question. Implement the game using three arrays. An array of type String should be used for the questions. Another array of type String should be used to store the answers. An array of type int should be used for the point values. All three arrays should be declared to be of size 5.

The index into the three arrays can be used to tie the question, answer, and point value together. For example, the item at index 0 for each array would correspond to question 1, answer 1, and the point value for question 1. The item at index 1 for each array would correspond to question 2, answer 2, and the point value for question 2, and so forth. Manually hardcode the five questions, answers, and point values into your program using trivia of your choice.

Your program should ask the player each question one at a time and allow the player to enter an answer. If the player’s answer matches the actual answer, the player wins the number of points for that question. If the player’s answer is incorrect, the player wins no points for the question. Your program should show the correct answer if the player is incorrect. After the player has answered all five questions, the game is over, and your program should display the player’s total score.