Update GUI.java

import edu.bu.ec504.project.Molecule;

import javax.imageio.ImageIO;

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

import java.io.*;

import java.net.*;

import java.awt.image.BufferedImage;

public class GUI extends JFrame {

    private JTextArea outputTextArea;

        });

        // Action listener for Display Molecule button

//        displayMoleculeButton.addActionListener(new ActionListener() {

//            @Override

//            public void actionPerformed(ActionEvent e) {

//                // Get the molecule path from the text field

//                String moleculePath = filePathField.getText();

//

//                // Create a new JFrame for displaying the molecule

//                JFrame moleculeViewerFrame = new JFrame("Molecule Viewer");

//                moleculeViewerFrame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); // Close only the molecule viewer frame

//

//                // Instantiate MoleculeViewer and add it to the frame

//                MoleculeViewer moleculeViewer = new MoleculeViewer(moleculePath);

//                moleculeViewerFrame.getContentPane().add(moleculeViewer);

//

//                // Pack and display the frame

//                moleculeViewerFrame.pack();

//                moleculeViewerFrame.setLocationRelativeTo(null); // Center the frame on the screen

//                moleculeViewerFrame.setVisible(true);

//            }

//        });

        displayMoleculeButton.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                // Get the API for the molecule

                String moleculePath = filePathField.getText();

                // Split the file path by "/"

                String[] parts = moleculePath.split("/");

                // Extract the filename (last part of the path)

                String filename = parts[parts.length - 1];

                // Remove the file extension (.txt) to get the molecule name

                String moleculeName = filename.replace(".txt", "");

                String imageURL = "https://cactus.nci.nih.gov/chemical/structure/" + moleculeName + "/image";

                try {

                    // Download the image from the URL

                    URL url = new URL(imageURL);

                    BufferedImage image = ImageIO.read(url);

                    // Create a JLabel to display the image

                    JLabel imageLabel = new JLabel(new ImageIcon(image));

                    // Create a new JFrame to display the image

                    JFrame imageFrame = new JFrame("Molecule Display");

                    imageFrame.getContentPane().add(imageLabel, BorderLayout.CENTER);

                    imageFrame.setSize(400, 400);

                    imageFrame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

                    imageFrame.setLocationRelativeTo(null); // Center the frame

                    imageFrame.setVisible(true); // Make the frame visible

                } catch (IOException ex) {

                    // Handle the IOException

                    ex.printStackTrace(); // You can print the stack trace or handle it differently

                }

            }

        });

        // Action listener for Statistics button

        statisticsButton.addActionListener(new ActionListener() {

                // Close the server socket after accepting the connection

                serverSocket.close();

                moleculeDb.save(dbName);

                moleculeDb.save(dbName); // save the database

            } catch (IOException ex) {

                ex.printStackTrace();