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Lab2-Review-Starter/Example Output

EXAMPLE OUTPUT Run 1: Player guesses correctly 54 X X X 83 Is the sum of the numbers greater than 250? (Y or N): Y You guessed correctly! The sum was 314! 54 3 77 97 83 Run 2: Player guesses incorrectly 78 X X X 37 Is the sum of the numbers greater than 250? (Y or N): N You guessed wrong! The sum was 305! 78 100 49 41 37 Run 3: Player provides incorrect input multiple times 97 X X X 92 Is the sum of the numbers greater than 250? (Y or N): y Is the sum of the numbers greater than 250? (Y or N): n Is the sum of the numbers greater than 250? (Y or N): x Is the sum of the numbers greater than 250? (Y or N): # Is the sum of the numbers greater than 250? (Y or N): N You guessed wrong! The sum was 339! 97 10 86 54 92

Lab2-Review-Starter/providedDoc/GameDriver.html

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Class GameDriver

  • java.lang.Object
    • GameDriver
  • public class GameDriver
extends java.lang.Object
    Runs the RandGuessGame. Creates an instance of RandGuessGame and calls upon its methods to conduct the game. RandGuessGame methods called in order: populateArray outputArray (passing true to hide values) playerGuess getResult outputArray (passing false to show all values)

    • Constructor Summary

      Constructors 
      Constructor and Description
      GameDriver() 

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method and Description
      static void main(java.lang.String[] args) Main method which creates instance of RandGuessGame and executes its methods.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • GameDriver
        public GameDriver()

    • Method Detail

      • main
        public static void main(java.lang.String[] args)
        Main method which creates instance of RandGuessGame and executes its methods.
        Parameters:
        args - Command line arguments (Unused)
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Class RandGuessGame

  • java.lang.Object
    • RandGuessGame
  • public class RandGuessGame
extends java.lang.Object
    Class for a simple, randomized guessing game. Five integer values between 1 and MAX_VALUE (inclusive) will be generated. Only the first and last will be shown to the player. The player must then guess if the sum of all of the numbers is greater than the possible average or not.

    • Field Summary

      Fields 
      Modifier and Type Field and Description
      private static int ARR_SIZE Number of randomly generated numbers.
      private int arraySum Stores sum of random values.
      private char guess Stores player's guess.
      private int guessTarget Number the player must guess against, calculated with MAX_VALUE and ARR_SIZE.
      private boolean hideMiddleVals Determines if the String returned by toString hides the middle values.
      private static int MAX_VALUE Maximum value of randomly generated values.
      private int[] numbers Stores randomly generated numbers for game.
      private java.util.Random rand Random number generator to use for the game.

    • Constructor Summary

      Constructors 
      Constructor and Description
      RandGuessGame(java.util.Random randIn) Constructor for the RandGuessGame.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method and Description
      int getArraySum() Retrieves the sum of the numbers in the array.
      int[] getNumbers() Retrieves the numbers array.
      java.lang.String getResult() Checks to see if player's guess was correct, and constructs and returns a String that reports if they are correct or incorrect, and appends the correct sum of the array.
      void populateArray() Populates the "numbers" array with random numbers between 1 and "MAX_VALUE".
      void toggleHidden() Toggles the value of hideMiddleVals.
      java.lang.String toString() Returns a String containing the values in the "numbers" array on a single line, separated by spaces with the middle values hidden or all visible based on value of "hideMiddleValue" data member.
      boolean validatePlayerGuess(char guessIn) Accepts a user's guess for the game.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

    • Field Detail

      • MAX_VALUE
        private static final int MAX_VALUE
        Maximum value of randomly generated values.
        See Also:
        Constant Field Values
      • ARR_SIZE
        private static final int ARR_SIZE
        Number of randomly generated numbers.
        See Also:
        Constant Field Values
      • numbers
        private int[] numbers
        Stores randomly generated numbers for game.
      • guessTarget
        private int guessTarget
        Number the player must guess against, calculated with MAX_VALUE and ARR_SIZE.
      • guess
        private char guess
        Stores player's guess.
      • arraySum
        private int arraySum
        Stores sum of random values.
      • hideMiddleVals
        private boolean hideMiddleVals
        Determines if the String returned by toString hides the middle values.
      • rand
        private java.util.Random rand
        Random number generator to use for the game.

    • Constructor Detail

      • RandGuessGame
        public RandGuessGame(java.util.Random randIn)
        Constructor for the RandGuessGame. Creates "numbers" array of size ARR_SIZE to store random values, sets arraySum to zero, and calculates value of "guessTarget" by multiplying the amount of numbers by half of "MAX_VALUE". The passed Random object is assigned to the class' Random member. hideMiddleVals is defaulted to "true".
        Parameters:
        randIn - The random number generator to be used for this instance of the game.

    • Method Detail

      • populateArray
        public void populateArray()
        Populates the "numbers" array with random numbers between 1 and "MAX_VALUE".
      • toggleHidden
        public void toggleHidden()
        Toggles the value of hideMiddleVals. If it is currently true, sets it to false, and vice-versa.
      • toString
        public java.lang.String toString()
        Returns a String containing the values in the "numbers" array on a single line, separated by spaces with the middle values hidden or all visible based on value of "hideMiddleValue" data member. There is a trailing space on the end, so an example String returned may be: "5 X X X 67 ". NOTE: This does not output to System.out, it generates and returns a String.
        Overrides:
        toString in class java.lang.Object
        Returns:
        A String with the values of the numbers array. Middle values are hidden if hideMiddleValue is true.
      • validatePlayerGuess
        public boolean validatePlayerGuess(char guessIn)
        Accepts a user's guess for the game. Validates that it is either the character 'Y' or 'N'. If it is a valid guess, sets the guess data member to the passed value and returns "true". If it is not valid it does not change the value of guess and returns false.
        Parameters:
        guessIn - The player's guess.
        Returns:
        True if the passed guess is valid, false if it is not.
      • getResult
        public java.lang.String getResult()
        Checks to see if player's guess was correct, and constructs and returns a String that reports if they are correct or incorrect, and appends the correct sum of the array.
        Returns:
        A String reporting the results of the game.
      • getNumbers
        public int[] getNumbers()
        Retrieves the numbers array. Used for testing, do not change.
        Returns:
        The numbers array.
      • getArraySum
        public int getArraySum()
        Retrieves the sum of the numbers in the array. Used for testing, do not change.
        Returns:
        The value of arraySum.
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Constant Field Values

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This API (Application Programming Interface) document has pages corresponding to the items in the navigation bar, described as follows.

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  • Constant Field Values

    The Constant Field Values page lists the static final fields and their values.

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A

ARR_SIZE - Static variable in class RandGuessGame
Number of randomly generated numbers.
arraySum - Variable in class RandGuessGame
Stores sum of random values.
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G

GameDriver - Class in <Unnamed>
Runs the RandGuessGame.
GameDriver() - Constructor for class GameDriver
 
getArraySum() - Method in class RandGuessGame
Retrieves the sum of the numbers in the array.
getNumbers() - Method in class RandGuessGame
Retrieves the numbers array.
getResult() - Method in class RandGuessGame
Checks to see if player's guess was correct, and constructs and returns a String that reports if they are correct or incorrect, and appends the correct sum of the array.
guess - Variable in class RandGuessGame
Stores player's guess.
guessTarget - Variable in class RandGuessGame
Number the player must guess against, calculated with MAX_VALUE and ARR_SIZE.
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H

hideMiddleVals - Variable in class RandGuessGame
Determines if the String returned by toString hides the middle values.
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M

main(String[]) - Static method in class GameDriver
Main method which creates instance of RandGuessGame and executes its methods.
MAX_VALUE - Static variable in class RandGuessGame
Maximum value of randomly generated values.
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N

numbers - Variable in class RandGuessGame
Stores randomly generated numbers for game.
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P

populateArray() - Method in class RandGuessGame
Populates the "numbers" array with random numbers between 1 and "MAX_VALUE".
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R

rand - Variable in class RandGuessGame
Random number generator to use for the game.
RandGuessGame - Class in <Unnamed>
Class for a simple, randomized guessing game.
RandGuessGame(Random) - Constructor for class RandGuessGame
Constructor for the RandGuessGame.
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T

toggleHidden() - Method in class RandGuessGame
Toggles the value of hideMiddleVals.
toString() - Method in class RandGuessGame
Returns a String containing the values in the "numbers" array on a single line, separated by spaces with the middle values hidden or all visible based on value of "hideMiddleValue" data member.
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V

validatePlayerGuess(char) - Method in class RandGuessGame
Accepts a user's guess for the game.
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  • Class Summary 
    Class Description
    GameDriver Runs the RandGuessGame.
    RandGuessGame Class for a simple, randomized guessing game.
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Lab2-Review-Starter/src/GameDriver.java

Lab2-Review-Starter/src/GameDriver.java

import  java . util . Random ;
import  java . util . Scanner ;

/**
 * 
 * Runs the RandGuessGame. Creates an instance of RandGuessGame and calls upon its methods to conduct the game.
 * <br><strong>RandGuessGame methods called in order:</strong><br>
 * populateArray<br>
 * outputArray (passing true to hide values)<br>
 * playerGuess<br>
 * getResult<br>
 * outputArray (passing false to show all values)<br>
 *
 */
public   class   GameDriver
{
     /**
     * Main method which creates instance of RandGuessGame and executes its methods.
     *  @param  args Command line arguments (Unused)
     */
     public   static   void  main ( String []  args )
     {
         //Generate instance of game
         RandGuessGame  game  =   new   RandGuessGame ( new   Random ());
         Scanner  input  =   new   Scanner ( System . in );
         char  guess ;

         //Conduct game behaviors
        game . populateArray ();
         System . out . println ( game );

         do
         {
             System . out . print ( "Is the sum of the numbers greater than 250?\n(Y or N): " );
            guess  =  input . next (). charAt ( 0 );
         }   while   ( ! game . validatePlayerGuess ( guess ));

         System . out . println ( game . getResult ());

        game . toggleHidden ();
         System . out . println ( game );
        
        input . close ();
     }
}

Lab2-Review-Starter/src/RandGuessGame.java

Lab2-Review-Starter/src/RandGuessGame.java

import  java . util . Random ;

/**
 * Class for a simple, randomized guessing game. Five integer values between 1 and MAX_VALUE (inclusive) will be
 * generated. Only the first and last will be shown to the player. The player must then guess if the sum
 * of all of the numbers is greater than the possible average or not.
 *
 */
public   class   RandGuessGame
{

     //Declare data members
    
     //Create Constructor
    
     //Write member methods
    
     /**
     * Retrieves the numbers array. Used for testing, do not change.
     *  @return  The numbers array.
     */
     public   int []  getNumbers ()
     {
         return  numbers ;
     }
    
     /**
     * Retrieves the sum of the numbers in the array. Used for testing, do not change.
     *  @return  The value of arraySum.
     */
     public   int  getArraySum ()
     {
         return  arraySum ;
     }
}