Write a graphical application to implement a currency converter between euros and U.S. dollars, and vice versa. Provide two text fields for the euro and dollar amounts.Between them, place two buttons labeled > and < for updating the field on the right or left. For this exercise, use a conversion rate of 1 euro = 1.42 U.S. dollars.

- Please use the following code and add javadoc and code comment

- Also please help me understand how many classes or packags to create to run this and where to break this code? When I paste this in eclipse in its entirety, I get a lot of error messages.

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import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JTextField;

@SuppressWarnings("serial")

public class CurrencyConverterFrame extends JFrame {

private JLabel euroLabel;

private JLabel dollarLabel;

private JTextField euroValueField;

private JTextField dollarValueField;

private JButton dollarToEuro;

private JButton euroToDollar;

private JPanel panel;

private final static int FRAME_WIDTH = 400;

private final static int FRAME_HEIGHT = 100;

public CurrencyConverterFrame() {

this.createComponents();

this.createPanel();

this.setSize(FRAME_WIDTH, FRAME_HEIGHT);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setVisible(true);

}

private void createComponents() {

this.createLabels();

this.createTextFields();

this.createButtons();

}

private void createLabels() {

this.euroLabel = new JLabel("Euro: ");

this.dollarLabel = new JLabel("Dollar: ");

}

private void createTextFields() {

final int ROWS = 5;

this.euroValueField = new JTextField(ROWS);

this.dollarValueField = new JTextField(ROWS);

}

private void createButtons(){

class ConvertListener implements ActionListener {

private String currency;

public ConvertListener(String currency) {

this.currency = currency;

}

@Override

public void actionPerformed(ActionEvent e) {

try {

if (currency.equals("dollars")) {

double euros = Double.parseDouble(euroValueField.getText());

double dollars = euros * 1.42;

String dollarsToString = String.format("%.2f", dollars);

dollarValueField.setText(dollarsToString);

}

else if (currency.equals("euros")) {

double dollars = Double.parseDouble(dollarValueField.getText());

double euros = dollars / 1.42;

String eurosToString = String.format("%.2f", euros);

euroValueField.setText(eurosToString);

}

} catch (Exception exception) {

JOptionPane.showMessageDialog(null,

"Error: Currency must be positive number!", "Invalid currency value!",

JOptionPane.ERROR_MESSAGE);

}

}

}

this.euroToDollar = new JButton(">");

ActionListener toEuroListener = new ConvertListener("dollars");

this.euroToDollar.addActionListener(toEuroListener);

this.dollarToEuro = new JButton("<");

ActionListener toDollarsListener = new ConvertListener("euros");

this.dollarToEuro.addActionListener(toDollarsListener);

}

private void createPanel() {

this.panel = new JPanel();

this.panel.add(this.euroLabel);

this.panel.add(this.euroValueField);

this.panel.add(this.euroToDollar);

this.panel.add(this.dollarToEuro);

this.panel.add(this.dollarLabel);

this.panel.add(this.dollarValueField);

this.add(panel);

}

@SuppressWarnings("unused")

public static void main(String[] args) {

JFrame frame = new CurrencyConverterFrame();

}

}