Implement Stock Item and Crypto Coin in Java Assignment Solution
- Instructions
- Objective
- Requirements and Specifications
Instructions
Objective
Write a java homework to implement stock item and crypto coin.
Requirements and Specifications
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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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