Question

Design a set of classes that work together to simulate the Stock Transaction System. You should design the following classes:

1. the StockMarket class. This class simulates the stock market such as Nasdaq, NYSD, or other stock market. The class's responsibility are as follows:

   -To know the stock market abbreviation, full name, location, an arraylist of stocks for this market

2. the Company class: this class simulates a company that has stock released on a stock market. The class's responsibilities are as follows:

   -To know the name, location, the stock (an object from the Stock class)and total number of shares released of the company, as well as the arraylist of customers holding the stock.

3. the Stock class: this class simulates a stock. The class's responsibilities are as follows:

   - To know the symbol, price of the stock

4. The Customer class: This class should simulate a customer that performs a stock transaction. The class's responsibility are as follows:

   -To know the customer id, customer name, the broker for the customer (which is an object from the Broker class), the available cash balance. It also has an arraylist of stocks holding by this customer and the number of shares for that stock.

5. The Broker class: This class should simulate a broker. The class's responsibility are as follows:

   -To know the broker license number, broker name, the total commissions (2% of the transaction amount) for the broker. It also has an arraylist of customers served by this broker and an arraylist of stock transactions (which are objects from Transaction class) performed by this broker.

6. The Transaction class: This class should simulate a stock transaction. The class's responsibility are as follows:

   -To know the transaction id, transaction type (buy/sell), transaction stock (an object from the Stock class), transaction price, broker for the transaction (object from the Broker class), customer for the transaction (object from the Customer class).

  

For each class, define proper data fields, getters and setters, as well as other required methods.

Write a program that demonstrate how these classes collaborate together to simulate a stock transaction system.

For example: You may need more than the following two operations.

1. when a company IPO at a stock market, a corresponding Stock object should be created for that company, and a stock should also be added to the arraylist of stocks at that stock market

2. when a customer initializes a stock purchasing through a broker, an object of the Transaction class should be created. For the broker: the total commission, the arraylist of the broker's customers, the arraylist of transactions performed by the broker should be updated. For the customer, the cash balance, the stock holding positions should be updated.

Hints:

1. The data fields/properties/attributes of a class are the things a class should know

2. Any behavior or action of a class should be defined as methods of that class

3. Data security of aggregation is done through copy constructor

Requirements:

well-documented java program

Answer 1

class StockTransactionSystem

{

public class StockMarket

{

string location;

string fullName;

string abbreviation:

string[] stocks;

}

public class Company

{

string name;

string location;

int noOfShares;

string[] customersOfStock;

Stock stock = new Stock();
}

public class Stock

{

string symbolofStock;

float priceofStock;

}

public class Customer

{

string name;

int id;

string broker;

float cashBalance;

Broker broker = new Broker();

}

getTransactionAmt(int id,int TrasactionId)

{

return Amount;
}

getTransactions(int id,int TransactionId)

{

return Transactions;

}

public class Broker

{

string LicenceNo;

string Name;

Transaction transaction = new Transaction();

}

public class Transaction

{

int id;

string type;

float price;

Stock stock= new Stock();

Broker broker = new Broker();

Customer customer= new Customer();

}

getStocksOfCustomer(int id)

{

return stocksOfCustomer;
}

getcustomersOfBroker(string name)

{

return customers;
}

noOfShares(int id,string symbol)

{

return noOfSharesForStock;

}

getStockSymbol()

{

return symbolofStock;

}

getStockPrice(symbolOfStock:string)

{

return priceOfStock;

}

getNoOfShares(string name)

{

return noOfShares;

}

get customersOfStock(string company,string stockSymbol)

{

return customersOfStock;
}

getStockMarketLocation()

{

return location;
}

getFullNameOfStockMarket(abbreviation:string)

{

return fullName;
}

get stocks()

{

return stocks;
}

public static void main(string args[])

{

initializeStockPurchase();

initializeIPO();
}

initializeIPO()

{

Stock s= new Stock();

s.setStocksofMarket();

}

}