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Implement Stock Item and Crypto Coin in Java Assignment Solution

June 25, 2024
Jessica Miller
Jessica Miller
🇺🇸 United States
Java
Jessica Miller is a seasoned programmer with a master's degree in software engineering from Stanford University. Having completed over 700 Java assignments, Jessica excels in implementing sorting algorithms, multi-dimensional arrays, and efficient array operations. Her deep understanding of complex programming concepts and hands-on experience make her a valuable resource for students seeking high-quality homework help.
Key Topics
  • Instructions
    • Objective
  • Requirements and Specifications
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Instructions

Objective

Write a java homework to implement stock item and crypto coin.

Requirements and Specifications

Program-to-implement-stock-item-and-crypto-coin-in-java (1)

Source Code

CRYPTO COIN package Assignment; public class CryptoCoin extends StockItem { public CryptoCoin(String stockCode, int variableQuantity, double variablePrice) { super(stockCode, variableQuantity, variablePrice); } @Override public String getStockName() { return "C-Coin"; } @Override public String getStockDescription() { return "CryptoCoin"; } @Override public String toString() { return super.toString(); } } ELECTRIC CAR package Assignment; public class CryptoCoin extends StockItem { public CryptoCoin(String stockCode, int variableQuantity, double variablePrice) { super(stockCode, variableQuantity, variablePrice); } @Override public String getStockName() { return "C-Coin"; } @Override public String getStockDescription() { return "CryptoCoin"; } @Override public String toString() { return super.toString(); } } MOBILE TABLET package Assignment; public class MobileTablet extends StockItem { public MobileTablet(String stockCode, int variableQuantity, double variablePrice) { super(stockCode, variableQuantity, variablePrice); } @Override public String getStockName() { return "MPad"; } @Override public String getStockDescription() { return "Mobile Tablet"; } @Override public String toString() { return super.toString(); } } NAV SYS package Assignment; public class NavSys extends StockItem { public NavSys(String stockCode, int variableQuantity, double variablePrice) { super(stockCode, variableQuantity, variablePrice); } @Override public String getStockName() { return "Navigation System"; } @Override public String getStockDescription() { return "GeoVision Sat Nav"; } @Override public String toString() { return super.toString(); } public static void main(String[] args) { int q = 10; double price = 99.99; String code = "NS101"; System.out.println("Creating a stock with " + q + " units Navigation system, price " + price + " each, and item " + code); System.out.println("Printing item stock information"); NavSys navSysItem = new NavSys(code, q, price); System.out.println(); System.out.println(navSysItem); int addedQ = 10; System.out.println("Increasing " + addedQ + " more units"); System.out.println("Printing item stock information"); navSysItem.addStock(addedQ); System.out.println(); System.out.println(navSysItem); int soldQ = 2; System.out.println("Sold " + soldQ + " units"); System.out.println("Printing item stock information"); navSysItem.sellStock(soldQ); System.out.println(); System.out.println(navSysItem); double newPrice = 100.99; System.out.println("Set new price " + newPrice + " per unit"); System.out.println("Printing item stock information"); navSysItem.setVariablePrice(newPrice); System.out.println(); System.out.println(navSysItem); addedQ = 0; System.out.println("Increasing " + addedQ + " more units"); System.out.println(); System.out.print("The error was: "); navSysItem.addStock(addedQ); } } STOCK ITEM package Assignment; public class StockItem { private static final double VAT_RATE = 0.175; private String stockCode; private int variableQuantity; private double variablePrice; public StockItem(String stockCode, int variableQuantity, double variablePrice) { this.stockCode = stockCode; this.variableQuantity = variableQuantity; this.variablePrice = variablePrice; } public String getStockName() { return "Unknown Stock Name"; } public String getStockDescription() { return "Unknown Stock Description"; } public String getStockCode() { return stockCode; } public void setStockCode(String stockCode) { this.stockCode = stockCode; } public int getVariableQuantity() { return variableQuantity; } public void setVariableQuantity(int variableQuantity) { this.variableQuantity = variableQuantity; } public double getVariablePrice() { return variablePrice; } public void setVariablePrice(double variablePrice) { this.variablePrice = variablePrice; } public double getPriceWithVAT() { return variablePrice * (1 + VAT_RATE); } public boolean addStock(int q) { if (q < 1) { System.out.println("Increased item must be greater thanor equal to one"); return false; } if (variableQuantity + q > 100) { System.out.println("Stock quantity exceeds 100"); return false; } variableQuantity += q; return true; } public boolean sellStock(int q) { if (q < 1) { System.out.println("Sold amount must be positive"); return false; } if (variableQuantity < q) { return false; } variableQuantity -= q; return false; } @Override public String toString() { return "Stock Type: " + getStockName() + System.lineSeparator() + "Description: " + getStockDescription() + System.lineSeparator() + "StockCode: " + getStockCode() + System.lineSeparator() + "PriceWithoutVAT: " + getVariablePrice() + System.lineSeparator() + "PriceWithVAT: " + getPriceWithVAT() + System.lineSeparator() + "Total units in stock: " + getVariableQuantity() + System.lineSeparator(); } public static void main(String[] args) { int q = 10; double price = 99.99; String code = "W101"; System.out.println("Creating a stock with " + q + " units Unknown item, price " + price + " each, and item " + code); System.out.println("Printing item stock information"); StockItem stockItem = new StockItem(code, q, price); System.out.println(); System.out.println(stockItem); int addedQ = 10; System.out.println("Increasing " + addedQ + " more units"); System.out.println("Printing item stock information"); stockItem.addStock(addedQ); System.out.println(); System.out.println(stockItem); int soldQ = 2; System.out.println("Sold " + soldQ + " units"); System.out.println("Printing item stock information"); stockItem.sellStock(soldQ); System.out.println(); System.out.println(stockItem); double newPrice = 100.99; System.out.println("Set new price " + newPrice + " per unit"); System.out.println("Printing item stock information"); stockItem.setVariablePrice(newPrice); System.out.println(); System.out.println(stockItem); addedQ = 0; System.out.println("Increasing " + addedQ + " more units"); System.out.println(); System.out.print("The error was: "); stockItem.addStock(addedQ); } } TEST POLYMORPHISM package Assignment; public class TestPolymorphism { public static void main(String[] args) { int q = 10; double price = 99.99; String code = "W101"; System.out.println("Creating a stock with " + q + " units Unknown item, price " + price + " each, and item " + code); StockItem stockItem = new StockItem(code, q, price); itemInstance(stockItem); System.out.println(); q = 10; price = 99.99; code = "NS101"; System.out.println("Creating a stock with " + q + " units Navigation item, price " + price + " each, and item " + code); NavSys navSys = new NavSys(code, q, price); itemInstance(navSys); System.out.println(); q = 10; price = 129.99; code = "EC101"; System.out.println("Creating a stock with " + q + " units ECar item, price " + price + " each, and item " + code); ElectricCar eCar = new ElectricCar(code, q, price); itemInstance(eCar); System.out.println(); q = 10; price = 129.99; code = "MP101"; System.out.println("Creating a stock with " + q + " units MPad item, price " + price + " each, and item " + code); MobileTablet mPad = new MobileTablet(code, q, price); itemInstance(mPad); q = 10; price = 149.99; code = "CC101"; System.out.println("Creating a stock with " + q + " units CCoin item, price " + price + " each, and item " + code); CryptoCoin cCoin = new CryptoCoin(code, q, price); itemInstance(cCoin); } public static void itemInstance(StockItem stockItem) { System.out.println("Printing item stock information"); System.out.println(); System.out.println(stockItem); int addedQ = 10; System.out.println("Increasing " + addedQ + " more units"); System.out.println("Printing item stock information"); stockItem.addStock(addedQ); System.out.println(); System.out.println(stockItem); int soldQ = 2; System.out.println("Sold " + soldQ + " units"); System.out.println("Printing item stock information"); stockItem.sellStock(soldQ); System.out.println(); System.out.println(stockItem); double newPrice = 100.99; System.out.println("Set new price " + newPrice + " per unit"); System.out.println("Printing item stock information"); stockItem.setVariablePrice(newPrice); System.out.println(); System.out.println(stockItem); addedQ = 0; System.out.println("Increasing " + addedQ + " more units"); System.out.println(); System.out.print("The error was: "); stockItem.addStock(addedQ); } }

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