what is the solution for this java programming exercise? The final project will

Question

what is the solution for this java programming exercise?

The final project will be used to solve the problem of gathering information about a person’s financial investments. Investments a person may have include stocks, mutual funds, and real estate. This program will be limited to gathering information about a person’s share assets: stock and mutual fund investments.
The information about a share assets which would need to be known is: the symbol, number of shares owned, price paid per share, and the current price. There are stocks that pay dividends and those that do not. Stocks that pay a dividend would need the amount of dividends paid. The difference between a mutual fund and a stock is that a person can own parts of a share of a mutual fund, while entire shares of stock must be owned. (Hint: An OO concept applies here.) The user should be able to find out the current market value of an asset as well as the profit or loss of the asset.
Design a program that keeps track of a person’s share assets. The program must meet the following requirements:
1. The project must use user defined classes and inheritance.
2. A GUI interface must be used for user I/O.
3. A person may own shares of multiple stocks as well as participate in multiple mutual funds.
4. A given stock asset object should only have information about one asset – stock, dividend stock, or mutual fund.
5. Exception handling must be used where appropriate.
6. The stock and mutual fund information (portfolio) must be stored in a text file.
7. The user should have the option to display the portfolio information contained in the text file

Explanation / Answer

Executable code :

package mahesh;

public class Stockinfo {
   protected String stksymbol;
   protected int stk_num_stocks;
   protected double stk_purchasePrice;
   protected double stk_currentPrice;

   public Stockinfo() {
       stksymbol = null;
       stk_num_stocks = 0;
       stk_purchasePrice = 0.0;
       stk_currentPrice = 0.0;
   }

   public Stockinfo(String stksymbol, int numberofstkUnits, double stk_purchasePrice, double stk_currentPrice) {
       super();
       this.stksymbol = stksymbol;
       this.stk_num_stocks = numberofstkUnits;
       this.stk_purchasePrice = stk_purchasePrice;
       this.stk_currentPrice = stk_currentPrice;
   }

   public String get_stkSymbol() {
       return stksymbol;
   }

   public void set_stkSymbol(String stksymbol) {
       this.stksymbol = stksymbol;
   }

   public int getNumberOfStocks() {
       return stk_num_stocks;
   }

   public void setNumStocks(int numberofstkUnits) {
       this.stk_num_stocks = numberofstkUnits;
   }

   public double getstkPurchasePrice() {
       return stk_purchasePrice;
   }

   public void setPurchasePrice(double stk_purchasePrice) {
       this.stk_purchasePrice = stk_purchasePrice;
   }

   public double getstkCurrentPrice() {
       return stk_currentPrice;
   }

   public void setCurrentPrice(double stk_currentPrice) {
       this.stk_currentPrice = stk_currentPrice;
   }

   public double getstkInvestmentValue() {
       return (stk_num_stocks * stk_purchasePrice);
   }

   public double getstkCurrentInvestmentValue() {
       return (stk_num_stocks * stk_currentPrice);
   }

   public double getOverallstkGain() {
       return (getstkCurrentInvestmentValue() - getstkInvestmentValue());
   }

   public String toString() {
       String stkString = null;
       stkString = "Symbol:" + get_stkSymbol() + " " + "Number of stocks:" + getNumberOfStocks() + " "
               + "Purchase price:" + getstkPurchasePrice() + " " + "Investments:" + getstkInvestmentValue() + " "
               + "Current price:" + getstkCurrentPrice() + " " + "Current Value:" + getstkCurrentInvestmentValue()
               + " " + "Overall gain:" + getOverallstkGain();
       return stkString;
   }
}

class StockDividend extends Stockinfo {

   private double stkdividend;

   public StockDividend() {
       super();
       stkdividend = 0.0;
   }

   public StockDividend(String stksymbol, int numberofstkUnits, double stk_purchasePrice, double stk_currentPrice,
           double stkdividend) {
       super(stksymbol, numberofstkUnits, stk_purchasePrice, stk_currentPrice);
       this.stkdividend = stkdividend;
   }

   public double getstkDividend() {
       return stkdividend;
   }

   public void setDividend(double stkdividend) {
       this.stkdividend = stkdividend;
   }

   public double getOverallDividend() {
       return (stk_num_stocks * stkdividend);
   }

   @Override
   public double getOverallstkGain() {

       return (super.getOverallstkGain() + (getNumberOfStocks() * getstkDividend()));
   }

   public String toString() {
       String stkString = null;
       stkString = "Symbol:" + get_stkSymbol() + " " + "Number of stocks:" + getNumberOfStocks() + " "
               + "Purchase price:" + getstkPurchasePrice() + " " + "Investments:" + getstkInvestmentValue() + " "
               + "Current price:" + getstkCurrentPrice() + " " + "Current Value:" + getstkCurrentInvestmentValue()
               + " " + "Dividend:" + getstkDividend() + " " + "Total stkdividend paid:" + getOverallDividend() + " "
               + "Overall gain:" + getOverallstkGain();
       return stkString;
   }
}

class MutualFundInvest extends Stockinfo {

   private double numberofstkUnits;

   public MutualFundInvest() {
       stksymbol = null;
       numberofstkUnits = 0.0;
       stk_purchasePrice = 0.0;
       stk_currentPrice = 0.0;
   }

   public MutualFundInvest(String stksymbol, double numberofstkUnits, double stk_purchasePrice,
           double stk_currentPrice) {
       this.stksymbol = stksymbol;
       this.numberofstkUnits = numberofstkUnits;
       this.stk_purchasePrice = stk_purchasePrice;
       this.stk_currentPrice = stk_currentPrice;
   }

   public double getNum_mutUnits() {
       return numberofstkUnits;
   }

   public void setNum_mutUnits(double numberofstkUnits) {
       this.numberofstkUnits = numberofstkUnits;
   }

   @Override
   public double getstkInvestmentValue() {
       return (numberofstkUnits * stk_purchasePrice);
   }

   @Override
   public double getstkCurrentInvestmentValue() {
       return (numberofstkUnits * stk_currentPrice);
   }

   @Override
   public double getOverallstkGain() {
       return (getstkCurrentInvestmentValue() - getstkInvestmentValue());
   }

   public String toString() {
       String MfundString = null;
       MfundString = "Symbol:" + get_stkSymbol() + " " + "Number of units:" + getNum_mutUnits() + " "
               + "Purchase price:" + getstkPurchasePrice() + " " + "Investments:" + getstkInvestmentValue() + " "
               + "Current price:" + getstkCurrentPrice() + " " + "Current Value:" + getstkCurrentInvestmentValue()
               + " " + "Overall gain:" + getOverallstkGain();
       return MfundString;
   }
}

import java.util.ArrayList;
import java.util.Iterator;
import java.io.PrintWriter;

public class Inv_portfolio {

private ArrayList<StockInfo> stocksdet;
private ArrayList<StockDividend> dvntStocks;
private ArrayList<MutualFundInvest> mutualFnd;

  
public Inv_Portfolio() {

  
stocksdet=new ArrayList<StockInfo>();
dvntStocks=new ArrayList<StockDividend>();
mutualFnd=new ArrayList<MutualFundInvest>();
}

public ArrayList<StockInfo> getStocksdet() {
return stocksdet;
}

public ArrayList<StockDividend> getDividendStocksdet() {
return dvntStocks;
}
public ArrayList<MutualFundInvest> getMutualFundsdet() {
return mutualFnd;
}

public void addStock(StockInfo stock)
{
stocksdet.add(stock);
}

public void addDividendStock(StockDividend stock)
{
dvntStocks.add(stock);
}
public void addMutualFunddet(MutualFundInvest fund)
{
mutualFnd.add(fund);
}

public double getStocksValuedet()
{
double value=0.0;
Iterator<StockInfo> iterator=stocksdet.iterator();
while(iterator.hasNext())
{
StockInfo stock=iterator.next();
value+=stock.getstkCurrentInvestmentValue();
}
return value;
}

public double getDividendStocksdetail()
{
double value=0.0;
Iterator<StockDividend> iterator=dvntStocks.iterator();
while(iterator.hasNext())
{
StockDividend stock=iterator.next();
value+=stock.getstkCurrentInvestmentValue();
}
return value;
}

public double getMutualFundsdetail()
{
double value=0.0;
Iterator<MutualFundInvest> iterator=mutualFnd.iterator();
while(iterator.hasNext())
{
MutualFundInvest fund=iterator.next();
value+=fund.getstkCurrentInvestmentValue();
}
return value;
}

public double getPortfolio()
{
return (getStocksValuedet()+getDividendStocksdetail()+getMutualFundsdetail());
}

public String toString()
{
String portfolioString=null;
portfolioString="Stocks value:"+getStocksValuedet()+" "
+"Dividend stocks value:"+getDividendStocksdetail()+" "
+"Mutual funds value:"+getMutualFundsdetail()+" "
+"Overall value:"+getPortfolio();   
return portfolioString;
}

public void savePortfolio(String portfolioFileName)
{
try
{
PrintWriter pwrtr = new PrintWriter("portfolio.txt", "UTF-8");
pwrtr.println(getStocksValuedet()+" " +getDividendStocksdetail()+" " +getMutualFundsdetail()+" " +" " + getPortfolio());
pwrtr.close();
} catch (Exception e)
{
System.out.println("File write error")
}
}
}

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