Question

need code for this in java

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 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

Answer 1

import java.util.*;
import util.*;
import util.Iterator;
// We are importing the contnents of the util library
public class StockMarket
{

Map<String,DatedValue<Double,Date>> stockMarket;
//these are all private and static members as they have their infulence over the entirety of application
static final Date END_OF_TIME = new Date( Long.MAX_VALUE );
static Date[] d;static Random r = new Random( 1 );
static final int NUM_DATES = 100;
static
{
Calendar calendar = Calendar.getInstance();
calendar.set( 2003, 1, 1 );
d = new Date[NUM_DATES];
for( int i = 0; i < NUM_DATES; )
{
calendar.add( Calendar.DAY_OF_MONTH, 1 );
int day = calendar.get( Calendar.DAY_OF_WEEK );
if( day == Calendar.SATURDAY || day == Calendar.SUNDAY )
continue;
Date date = calendar.getTime();
d[i] = date;
i++;
}
}
  
/**
* Creates a new instance of StockExample
*/
public StockExample()
{
initializeStockMarket();
}
  
  
private void initializeStock( String stock, double initialValue )
{
// stock prices vary over time, so use a dated value
DatedValue<Double,Date> values = new ValueByDate<Double,Date>();
  
// add the stock to the stock market
stockMarket.put( stock, values );
  
// set the stock prices
double value = initialValue;
for( int i = 0; i < d.length - 1; i++ )
{
values.set( Double.valueOf( value ), d[i], d[i+1] );
double change = r.nextDouble();
value += change < 0.6? -change : change;
if( value < 0.0 )
value = 0.0;
}
}
  
/**
* Initializes the stock market with three fictitious companies.
*/
private void initializeStockMarket()
{
stockMarket = new HashMap<String,DatedValue<Double,Date>>();
  
initializeStock( "Global Software For Geeks", 100.00 );
initializeStock( "Compewter Materials", 50.00 );
initializeStock( "Mice With Wheels", 10.50 );
}
  
/**
* Returns the value of the specified stock at the specified date.
*/
private double lookupStockPrice( String stock, Date date )
{
DatedValue<Double,Date> values = stockMarket.get( stock );
if( values == null )
throw new NoSuchElementException();
  
Double value = values.get( date );
assert value != null;
  
return value.doubleValue();
}

/**
* Calculates and returns the value of the specified portfolio at the
* specified date.
*/
private double getPortfolioValue( DatedMap<String,Integer,Date> portfolio, Date date )
{
double total = 0.0;
  
// for each entry in the dated map
DatedSet<DatedMap.Entry<String,Integer,Date>,Date> entrySet = portfolio.entrySet();
Iterator<DatedMap.Entry<String,Integer,Date>,Date> iter = entrySet.iterator( date );
while( iter.hasNext() )
{
DatedMap.Entry<String,Integer,Date> entry = iter.next();
  
// what stock is it?
String stock = entry.getKey();
  
// for how many shares?
Integer shares = entry.getValue();
  
// look up the value
double price = lookupStockPrice( stock, date );
double value = price * shares.intValue();
  
// keep a running total
total += value;
}
return total;
}
  
/**
* Increments the number of stock shares in the specified portfolio.
*/
private void buyStock( DatedMap<String,Integer,Date> portfolio, String stock, int numShares, Date date )
{
// get the current number of shares owned
Integer currentShares = portfolio.get( stock, date );
  
// if none owned, add an entry to the dated map
if( currentShares == null )
{
portfolio.put( stock, Integer.valueOf( numShares ), date, END_OF_TIME );
return;
}
int totalShares = currentShares.intValue() + numShares;
  
// update the dated map
portfolio.put( stock, Integer.valueOf( totalShares ), date, END_OF_TIME );
}
  
public void run()
{
DatedMap<String,Integer,Date> portfolio = new TreeMapByKey<String,Integer,Date>();
double value = getPortfolioValue( portfolio, d[0] );
assert value == 0.0;
System.out.println( "Portfolio on " + d[0] + ": " + portfolio.toString( d[0] ));
buyStock( portfolio, "Compewter Materials", 100, d[10] );
buyStock( portfolio, "Mice With Wheels", 250, d[10] );
System.out.println( "Portfolio on " + d[15] + ": " + portfolio.toString( d[15] ));
value = getPortfolioValue( portfolio, d[15] );
System.out.println( "Portfolio value on " + d[15] + " is " + value );

// buy a third company's shares
buyStock( portfolio, "Global Software For Geeks", 10, d[50] );
  
// check the value on d[50]
System.out.println( "Portfolio on " + d[50] + ": " + portfolio.toString( d[50] ));
value = getPortfolioValue( portfolio, d[50] );
System.out.println( "Portfolio value on " + d[50] + " is " + value );
  
// buy some more stock on d[75]
buyStock( portfolio, "Mice With Wheels", 20, d[75] );
System.out.println( "Portfolio on " + d[80] + ": " + portfolio.toString( d[80] ));
value = getPortfolioValue( portfolio, d[80] );
System.out.println( "Portfolio value on " + d[80] + " is " + value );
System.out.println( "Entire portfolio: " + portfolio );
System.out.println( "Entire stock market: " + stockMarket );
}
  
public static void main(String[] args)
{
StockExample example = new StockExample();
example.run();
}
  
}