Question

Using Netbeans update the Sales project so the input and the output are done through a GUI of your choice.

The classes design should not be changed, only the code in the test class.

public abstract class Account {

private int accountId;

public Account(int id){
this.accountId=id;
}
//getters
public int getAccountId() {
return accountId;
}

//setters
public void setAccountId(int accountId) {
}

//abstract method to calculate sales
public abstract double calculateSales();
  
//to string method
@Override
public String toString() {
return("Account ID:"+getAccountId());
}
  
}

public class Services extends Account {

private int numberOfHours;
private double ratePerHour;

public Services(int id, int numberOfHours, double ratePerHours){
super(id);
this.numberOfHours=numberOfHours;
this.ratePerHour=ratePerHours;
}
  
//getters
public int getNumberOfHours() {
return numberOfHours;
}

public double getRatePerHour() {
return ratePerHour;
}

//setters
public void setNumberOfHours() {
this.numberOfHours=numberOfHours;
}

public void setRatePerHour() {
this.ratePerHour=ratePerHour;
}

//using the abstract method from Account
public double calculateSales() {
return getNumberOfHours() * getRatePerHour();
}

//toString method to put info in a readable format
@Override
public String toString() {
return super.toString()+", Rate per Hour: $"+getRatePerHour()+", Hours worked: "+ getNumberOfHours()+", Total Sales: $"+calculateSales();
}
}

public class Supplies extends Account {

private int numberOfItems;
private double pricePerItem;

public Supplies(int id, int numberOfItems, double pricePerItem){
super(id);
this.numberOfItems=numberOfItems;
this.pricePerItem=pricePerItem;
}
  
  
//getters
public int getNumberOfItems() {
return numberOfItems;
}

public double getPricePerItem() {
return pricePerItem;
}

//setters
public void setNumberOfItems() {
this.numberOfItems=numberOfItems;
}

public void setPricePerItem() {
this.pricePerItem=pricePerItem;
}

//using the abstract method from Account
public double calculateSales() {
return getNumberOfItems() * getPricePerItem();
}

//toString method to put info in a readable format
@Override
public String toString() {
return super.toString()+", Item Price: $"+getPricePerItem()+", Number of Items: "+ getNumberOfItems()+", Total Sales: $"+calculateSales();
}
}

TEST CLASS

public class companySales {
  
public static void main(String[] args) {
  
Account[] accounts;
accounts = new Account[100];
  
accounts[0] = new Supplies(1, 50, 4.50);
accounts[1] = new Services(2, 5, 25.50);

for(int x=0;x<2;++x){
System.out.println(accounts[x].toString());
}
}
}

Answer 1

Account.java

public abstract class Account {
   private int accountId;
   public Account(int id){
       this.accountId=id;
   }
   //getters
   public int getAccountId() {
       return accountId;
   }
   //setters
   public void setAccountId(int accountId) {
   }
   //abstract method to calculate sales
   public abstract double calculateSales();
   //to string method
   @Override
   public String toString() {
       return("Account ID:"+getAccountId());
   }

}

Supplies.java

public class Supplies extends Account {
   // instance variables
   private int numberOfItems;
   private double pricePerItem;
   // parameterized constructor
   public Supplies(int id, int numberOfItems, double pricePerItem){
       super(id);
       this.numberOfItems=numberOfItems;
       this.pricePerItem=pricePerItem;
   }
   //getters
   public int getNumberOfItems() {
       return numberOfItems;
   }
   public double getPricePerItem() {
       return pricePerItem;
   }
   //setters
   public void setNumberOfItems(int numberOfItems) {
       this.numberOfItems=numberOfItems;
   }
   public void setPricePerItem(double pricePerItem) {
       this.pricePerItem=pricePerItem;
   }
   //using the abstract method from Account
   public double calculateSales() {
       return getNumberOfItems() * getPricePerItem();
   }
   //toString method to put info in a readable format
   @Override
   public String toString() {
       return super.toString()+", Item Price: $"+getPricePerItem()+", Number of Items: "+ getNumberOfItems()+", Total Sales: $"+calculateSales();
   }
}

Services.java

public class Services extends Account {
   // instance variables
   private int numberOfHours;
   private double ratePerHour;
   // parameterized constructor
   public Services(int id, int numberOfHours, double ratePerHours){
       super(id);
       this.numberOfHours=numberOfHours;
       this.ratePerHour=ratePerHours;
   }
   //getters
   public int getNumberOfHours() {
       return numberOfHours;
   }
   public double getRatePerHour() {
       return ratePerHour;
   }
   //setters
   public void setNumberOfHours(int numberOfHours) {
       this.numberOfHours=numberOfHours;
   }
   public void setRatePerHour(double ratePerHour) {
       this.ratePerHour=ratePerHour;
   }
   //using the abstract method from Account
   public double calculateSales() {
       return getNumberOfHours() * getRatePerHour();
   }
   //toString method to put info in a readable format
   @Override
   public String toString() {
       return super.toString()+", Rate per Hour: $"+getRatePerHour()+", Hours worked: "+ getNumberOfHours()+", Total Sales: $"+calculateSales();
   }
}

CompanySales.java

import java.awt.HeadlessException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
// create class with JFrame
public class CompanySales extends JFrame implements ActionListener {

   private static final long serialVersionUID = 1L;
   // declare all required controls
   private JRadioButton supplies;
   private JRadioButton services;
   private ButtonGroup group;
   private JLabel label1;
   private JLabel label2;
   private JLabel label3;
   private JTextField accountId;
   private JTextField number;
   private JTextField rate;
   private JButton calculate;
   // Account class reference
   private Account account;
   // default constructor
   public CompanySales() throws HeadlessException {
       super();
       setSize(300,400); // set size of frame
       setTitle("Sales Project"); // set title to frame
       setDefaultCloseOperation(EXIT_ON_CLOSE);
       setLayout(null); // set layout as no layout
       // instantiate all declared controls
       supplies=new JRadioButton("Supplies",true);
       services=new JRadioButton("Services");
       group=new ButtonGroup();
       group.add(supplies);
       group.add(services);
       label1=new JLabel("Account ID: ");
       label2=new JLabel("Number Of Items: ");
       label3=new JLabel("Price per Item: ");
       accountId=new JTextField();
       number=new JTextField();
       rate=new JTextField();
       calculate=new JButton("Calculate Sales");
       // set bounds to all controls
       supplies.setBounds(50,30,100,40);
       services.setBounds(150,30,100,40);
       label1.setBounds(40,100,120,40);
       label2.setBounds(40,140,120,40);
       label3.setBounds(40,180,120,40);
       accountId.setBounds(140,100,125,30);
       number.setBounds(140,140,125,30);
       rate.setBounds(140,180,125,30);
       calculate.setBounds(80,250,150,40);
       // add all controls to the frame
       add(supplies);
       add(services);
       add(label1);
       add(label2);
       add(label3);
       add(accountId);
       add(number);
       add(rate);
       add(calculate);
       // all action listener on radio buttons and bauuton
       supplies.addActionListener(this);
       services.addActionListener(this);
       calculate.addActionListener(this);
       setVisible(true); // make frame visible
   }
  
   @Override
   public void actionPerformed(ActionEvent e) {
       try {
           int id,num;
           double price;
           // if supplies radio button is selected
           if(e.getSource()==supplies) {
               label2.setText("Number Of Items: ");
               label3.setText("Price per Item: ");
           }else
               // if services radio button is selected
               if(e.getSource()==services) {
                   label2.setText("Number Of Hours: ");
                   label3.setText("Rate Per Hour");
               }
           // accept input from text fields
           id=Integer.parseInt(accountId.getText());
           num=Integer.parseInt(number.getText());
           price=Double.parseDouble(rate.getText());
           if(supplies.isSelected()) {
               // create Supplies class object
               account=new Supplies(id, num, price);
               // calculate and print total sales
               JOptionPane.showMessageDialog(null, account.toString());
               clear(); // clear text fields
           }else
               if(services.isSelected()) {
                   // create Services class object
                   account=new Services(id, num, price);
                   // calculate and print total sales
                   JOptionPane.showMessageDialog(null, account.toString());
                   clear();
               }
       }catch(Exception e1) {
           if(e.getSource()==calculate)
           JOptionPane.showMessageDialog(null, "Invalid input...!!!");
       }
   }
   // method to clear text fields
   private void clear() {
       accountId.setText("");
       number.setText("");
       rate.setText("");
   }
   public static void main(String[] args) {
       new CompanySales(); // anonymous object of CompanySales class
   }
}

Output