Java program help please! The volleyball coach at Verde Valley High School would like some help managing her team. She would like a program to help her identify the best players. She has team rosters stored in text files that contain the names of her players (first name, then last name separated by a space), and their stats as attacks per set (a double) followed by blocks per set (a double). Higher stat scores are better. Each data field is separated by a space. For example, one line in a roster file would look like:

Gabrielle Reece 4.57 1.79

The coach would like the program to do the following:

Present a menu with the following options:

1. Open a roster file
2. List all players
3. List top attackers
4. List top blockers
5. Add a player
6. Change a player's stats
7. Count players
8. Quit program

When the user chooses 1 to open a roster file, then the program will ask for the filename of a roster file, then open and read the data from that file into an ArrayList.

When the user chooses 2 to list all players, then the program will list the names and stats of all player players.

When the user chooses 3 to list top attackers, then the program will determine and list the names and stats of the players with the top 2 attack stats.

When the user chooses 4 to list top blockers, then the program will determine and list the names and stats of the players with the top 2 stats for blocks.

When the user chooses 5 to add a player, then the program will prompt the user to enter the new player's name (first and last), attack stat (double), and block stat (double). The program should collect this information from the user, and then instantiate a new Player object with the given name and stats, and add that Player to the roster.

When the user chooses 6 to change a player's stats, then the program will prompt the user to enter the player's name (first and last). If there is a player on the roster with the given name, then the program will collect the new attack stat score (double), and block stat score (double), and will update the stat values for this player.

When the user chooses 7 to count players, then the program will display the number of players on the current roster.

When the user chooses 8 the program will end.

The Main class has already been designed and written for this program. Carefully review the code in the Main.java file and be sure that you understand how it works.

Your task is to implement the Player and Roster classes. The Player class will allow us to instantiate Player objects that will store the important information (name, attack stat, block stat) for a player. The Roster class will allow us to create and manage a roster of players - we will use an ArrayList<Player> to store the Player objects.

Part 1 - Implement the Player Class

In a file named Player.java, implement the class described below.

The Player class must have the following private instance variables:

• a variable named name that will store a String
• a variable named attackScore that will store a double
• a variable named blockScore that will store a double

The Player class must have the following public constructor method:

• an overloaded constructor that takes three arguments. The first argument will be a String (player's name). The second (attack score) and third (block score) arguments will be type double.

The Player class must have the following public methods:

• a method named getName. This accessor method will take no arguments. This method will return a String.
• a method named getAttackScore. This accessor method will take no arguments. This method will return a double.
• a method named setAttackScore. This mutator method will take one double argument. This method will not return anything.
• a method named getBlockScore. This accessor method will take no arguments. This method will return a double.
• a method named setBlockScore. This mutator method will take one double argument. This method will not return anything.
• a method named printInfo. This method will take no arguments. This method will not return anything.

Other Details

• The overloaded constructor should initialize the object's name, attackScore and blockScore variables with the values passed in to the parameter variables.
• The getName accessor method should simply return the value stored in the object's name variable.
• The getAttackScore accessor method should simply return the value currently stored in the object's attackScore variable.
• The setAttackScore mutator method should store the value passed in as an argument in the object's attackScore variable.
• The getBlockScore accessor method should simply return the value currently stored in the object's blockScore variable.
• The setBlockScore mutator method should store the value passed in as an argument in the object's blockScore variable.
• The printInfo method should print out to the console, the name and stats for this player object. The printout should look like this:

Rachael Adams (attack = 3.36, block = 1.93)

Part 2 - Implement the Roster Class

In a file named Roster.java, implement the class described below.

The Roster class must have the following private instance variables:

• a variable named playerList that will store a reference to an ArrayList<Player>

The Roster class must have the following public constructor methods:

• a default constructor
• an overloaded constructor that takes one argument. This argument will be a String.

The Roster class must have the following public methods:

• a method named addPlayer. This method will take three arguments. The first argument will be a String (player's name). The second (attack score) and third (block sscore) arguments will be double.
• a method named getPlayerCount. This method will take no arguments. This method will return an int.
• a method named getPlayerByName. This method will take one String argument. This method will return a Player reference.
• a method named printTopAttackers. This method will take no arguments. This method will not return anything.
• a method named printTopBlockers. This method will take no arguments. This method will not return anything.
• a method named printAllPlayers. This method will take no arguments. This method will not return anything.

Other Details

• The default constructor should instantiate a new ArrayList object, and store a reference to this object in the Roster's playerList instance variable.
• The overloaded constructor should instantiate a new ArrayList object, and store a reference to this object in the Roster's playerList instance variable. It should then open the roster file named in the parameter variable. It should then read in the data from this roster file and, for each line in the file, it should create (instantiate) a new Player object with the player name and block and attack scores on that line, and add this Player to the ArrayList playerList.
• The addPlayer method should instantiate a new Player object with the name and block and attack scores provided in the argument values, and then add this Player to the roster's ArrayList<Player> object.
• The getPlayerCount method should return the number of players currently stored in the roster's ArrayList<Player> object.
• The getPlayerByName method should iterate through the roster's ArrayList<Player> object and search for a player with a name that is equal to the argument value. If such a Player is found, then this method should return a reference to that Player object, otherwise this method should return null.
• The printTopBlockers method should determine the two Player objects with the best block scores (in descending order). It should then call the printInfo method on these Player objects.
• The printTopAttackers method should determine the two Player objects with the best attack stats (in descending order). It should then call the printInfo method on these Player objects.
• The printAllPlayers method should iterate through the roster's ArrayList<Player> object and call the printInfo method on each of these Player objects.