Hi, I am having trouble writing code for this particular part of my assignment. Would much appreciate it any help
This is my Panel.
Java Code: 
import javax.swing.*;
import javax.swing.border.TitledBorder;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * @author Prabhdeep Singh- CS 103 
 * Driver class 
 * Gets information from the user as to what sort of employee
 */

public class WindowPanel extends JPanel  
{
	private JButton B1, B2, B3, B4, B5; // buttons 
	private JRadioButton RB1, RB2, RB3, RB4; // radiobuttons
	private JTextField TF1, TF2,TF3; // textfields
	private JLabel L1, L2, L3; // labels
	private EmployeesManager Moneyroll; // Class EmployeesManager
	
/**
 * Provides all the buttons, radio buttons, text fields, and bordered titles which are used in the gui
 */
	public WindowPanel() // Constructor
	{
		this.setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
		JPanel Panel1 = new JPanel();
		TitledBorder Titled1 = BorderFactory.createTitledBorder("Type of employee");
		RB1 = new JRadioButton("Commission Worker", true);
		RB2= new JRadioButton("Piece Worker");
		RB3 = new JRadioButton("Manager");
		RB4 = new JRadioButton("Hourly Worker");
		ButtonGroup BigGroup = new ButtonGroup();
		BigGroup.add(RB1);
		BigGroup.add(RB2);
		BigGroup.add(RB3);
		BigGroup.add(RB4);
		RB1.addActionListener(new RadioButtonListener());
		RB2.addActionListener(new RadioButtonListener());
		RB3.addActionListener(new RadioButtonListener());
		RB4.addActionListener(new RadioButtonListener());
		Panel1.setBorder(Titled1);
		Panel1.add(RB1);
		Panel1.add(RB2);
		Panel1.add(RB3);
		Panel1.add(RB4);
		add(Panel1);
		
		JPanel Panel2 = new JPanel();
		L1 = new JLabel("Employee ID: ");
		L2 = new JLabel("Weekly Sales");
		L3 = new JLabel();
		TF1 = new JTextField(15);
		TF2 = new JTextField(10);
		TF3 = new JTextField(5);
		L3.setVisible(false);
		TF3.setVisible(false);
		Panel2.add(L1);
		Panel2.add(TF1);
		Panel2.add(L2);
		Panel2.add(TF2);
		Panel2.add(L3);
		Panel2.add(TF3);
		
		add(Panel2);
		
		JPanel Panel3 = new JPanel();
		B1 = new JButton("Add Employee");
		B2 = new JButton("Write Report to File");
		B3 = new JButton("Display Summary Pay Report");
		B4 = new JButton("Read From File");
		B5 = new JButton("Exit");
		B1.addActionListener(new JButtonListener());
		B2.addActionListener(new JButtonListener());
		B3.addActionListener(new JButtonListener());
		B4.addActionListener(new JButtonListener());
		B5.addActionListener(new JButtonListener());
		Panel3.add(B1);
		Panel3.add(B2);
		Panel3.add(B3);
		Panel3.add(B4);
		Panel3.add(B5);
		
		add(Panel3);
		
		Moneyroll=new EmployeesManager();
		
		
		
	}
	private class RadioButtonListener implements ActionListener // RadioButton ActionListener Class
	{
		public void actionPerformed(ActionEvent e)
		{
			Object Clicker = e.getSource();
			if (Clicker == RB1 )
			{
				L2.setText("Weekly Sales");
				TF3.setVisible(false);
				L3.setVisible(false);
				
			}
			else if (Clicker == RB4)
			{
				L2.setText("PayRate");
				TF3.setVisible(true);
				L3.setVisible(true);
				L3.setText("Hours");
			}
			else if (Clicker == RB3)
			{
				L2.setText("Salary");
				TF3.setVisible(false);
				L3.setVisible(false);
				
			}
			else if (Clicker == RB2)
			{
				L2.setText("Piece Rate");
				L3.setText("# pieces");
				TF3.setVisible(true);
				L3.setVisible(true);
			}
		}
	
	}
	private class JButtonListener implements ActionListener // ButtonListener Class
	{
		public void actionPerformed(ActionEvent e)
		{
			if (e.getSource()==B1)
			{
				
				if (RB1.isSelected())
				{
					Moneyroll.addEmployee(3, Double.parseDouble(TF2.getText()), 0, Integer.parseInt(TF1.getText()));
				}
				else if(RB3.isSelected())
				{
					Moneyroll.addEmployee(1, Double.parseDouble(TF2.getText()), 0, Integer.parseInt(TF1.getText()));
				}
				else if (RB4.isSelected())
				{
					Moneyroll.addEmployee(2, Double.parseDouble(TF2.getText()), Integer.parseInt(TF3.getText()), Integer.parseInt(TF1.getText()));
				}
				else if (RB2.isSelected())
				{
					Moneyroll.addEmployee(4, Double.parseDouble(TF2.getText()), Integer.parseInt(TF3.getText()), Integer.parseInt(TF1.getText()));
				}
			}
			else if (e.getSource() == B2)
			{
				
			}
			else if(e.getSource()==B3)
			{
				try {
					PrintWriter outputFile = new PrintWriter("outputfile.txt");
					outputFile.println(Moneyroll.generateWeeklyReport());
					outputFile.close();
				} catch (FileNotFoundException e1) {
					
					e1.printStackTrace();
				}
				JOptionPane.showMessageDialog(null, Moneyroll.generateWeeklyReport());
				
				
			}
			else if(e.getSource()==B4)
			{
				
				JFileChooser fileChooser = new JFileChooser();
				int status = fileChooser.showOpenDialog(null);
				if(status == JFileChooser.APPROVE_OPTION)
				{
					File selectedFile = fileChooser.getSelectedFile();
					try {
						Scanner scan = new Scanner(selectedFile);
						 int EmployeeID, Position, Ticker;									//Creates variable that will hold the employee id, hours, or number of pieces
						 double Payment;											//Creates a variable that will hold the salary, weekly sales, payrate, or piece rate
						
						 while(scan.hasNextLine())
						 {
							 Position = scan.nextInt();							//Gets the position choice from the file
							 if(Position==4 || Position==2)
							 {
								 Payment = scan.nextDouble();					//Gets the payrate or the piece rate from the file
								 Ticker = scan.nextInt();						//Gets the hours or num of pieces
								 EmployeeID = scan.nextInt();						//Get the employee ID
							 }
							 else
							 {
								 Payment = scan.nextDouble();					//Gets the weekly sales or salary from the file
								 Ticker = 0;
								 EmployeeID = scan.nextInt();						//Get the employee ID
							 }
							 
							 Moneyroll.addEmployee(Position, Payment, Ticker, EmployeeID);				//Adds the data from the file to the array
						 }	 
						 scan.close();				
						String filename = selectedFile.getPath();
						JOptionPane.showMessageDialog(null,  "You selected " + filename);
					} catch (FileNotFoundException e1) {
		
						e1.printStackTrace();
					}
										//Creates a new scanner that will read from a file
					
				}
			}
			else if (e.getSource()==B5)
			{
				System.exit(0);
			}
		}
	}
}
Java Code: 
import java.util.ArrayList;
import java.text.NumberFormat;
/**
 * This EmployeesManager implements EmployeesManagerInterface provided by the teacher
 * @author Prabhdeep Singh
 *
 */

public class EmployeesManager implements EmployeesManagerInterface 
{
	
	private ArrayList<Employee> Moneyroll;	// ArrayLists 
	private NumberFormat form=NumberFormat.getCurrencyInstance(); // Formats the number
	private int NumberOfHourly; // hourly works
	private int NumberOfCommission; // commission works
	private int NumberOfPiece; // piece works
	private int NumberOfManagers; // manager works
	
/**
 * EmployeesManager Constructor
 */
	public EmployeesManager() // constructor which initializes all values
	{
		NumberOfHourly=0;
		NumberOfManagers=0;
		Moneyroll=new ArrayList<Employee>();
		NumberOfCommission=0;
		NumberOfPiece=0;
		
	}

	/**
	 * @param paycode
	 * @param firstParam
	 * @param SecondParam
	 * @param empNum
	 */
	public void addEmployee(int paycode, double firstParam, int secondParam, int empNum) // Gets the different paycodes then implements them
	{
		if (paycode==1)
		{
			NumberOfManagers++;
			Moneyroll.add(new Manager(empNum, firstParam));
		}
		else if(paycode==2)
		{
			NumberOfHourly++;
			Moneyroll.add(new HourlyWorker(empNum, firstParam, secondParam));
		}
		else if (paycode==3)
		{
			NumberOfCommission++;
			Moneyroll.add(new CommissionWorker(empNum, firstParam));
		}
		else if(paycode==4)
		{
			NumberOfPiece++;
			Moneyroll.add(new PieceWorker(empNum, firstParam, secondParam));
		}
	}
	/**
	 * @return NumberOfHourly
	 */
	public int getNumHourlyWorker() // getter
	{
		return NumberOfHourly;
	}
	/**
	 * @return NumberOfManagers
	 */
	public int getNumManager() // getter
	{
		return NumberOfManagers;
	}
	/**
	 * @return NumberOfComission
	 */
	public int getNumCommissionWorker() // getter
	{
		return NumberOfCommission;
	}
	/**
	 * @return NumberOfPiece
	 */
	public int getNumPieceWorker() // getter
	{
		return NumberOfPiece;
	}
	/**
	 * @return FinalReport - A huge Report of what happened in the program.
	 */
	public String generateWeeklyReport() // Weekly Report of the entire thing
	{
		String FinalReport="WEEKLY PAY REPORT FOR WIDGET COMPANY\n\nEMPLOYEE        WEEKLYPAY\n  ";
		for (Employee y: Moneyroll)
		{
			FinalReport+=y.getId()+"               "+form.format(y.getWeeklyPay())+"\n  ";
		}
		FinalReport+="\n";
		FinalReport+="Total payroll: "+form.format(this.calculateTotalWeeklyPay())+"\n";
		FinalReport+="Total number of Managers paid:"         +NumberOfManagers+"\n";
		FinalReport+="Total number of Hourly Workers paid:"          +NumberOfHourly+"\n";
		FinalReport+="Total number of Commission Workers paid:"          +NumberOfCommission+"\n";
		FinalReport+="Total number of Piece Workers paid:"          +NumberOfPiece+"\n";
		
		return FinalReport;
		
	}
	/**
	 * @return Final Total, which is the totalWeeklyPay
	 */
	public double calculateTotalWeeklyPay() // calculates the total weeklypay
	{
		double FinalTotal=0;
		for (Employee x: Moneyroll)
		{
			FinalTotal+=x.getWeeklyPay();
		}
		return FinalTotal;
	}
	
}
This is my Employee Manager class. The problem i am having is, as u can see the code under if(e.getsource()==B2) being empty, is that after reading in a file using the read from file button, i am suppose to put data for another worker using the gui, and when i click write report to file, its suppose to write the data to the file i read in, and when i click the display summary pay report, it should show the new worker data i added using the gui and its format should fit the generate weekly report format in the employee manager class i included. Any help would be appreciated. i have tried uploading my assignment file but it just doesnt seem to be working.