在eclipse中，用java8编写代码:GUI界面的文件拷贝，8个以上的Swing组件，给至少一个组件添加事件响应，Look and Feel，java，完成二进制类型文件的复制，例如：图片、声音

好的，以下是一个简单的GUI界面的文件拷贝程序，其中包含8个以上的Swing组件，并给一个组件添加了事件响应。同时，使用了Java 8的新特性lambda表达式来简化事件处理代码：

import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.UIManager;

public class FileCopyGUI {

    private JFrame frame;
    private JButton btnSelectSource;
    private JButton btnSelectDest;
    private JButton btnCopy;
    private JLabel lblSource;
    private JLabel lblDest;
    private JProgressBar progressBar;
    private File sourceFile;
    private File destFile;

    public static void main(String[] args) {
        // Set the look and feel to the system default
        try {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        } catch (Exception e) {
            e.printStackTrace();
        }

        // Start the GUI on the event dispatch thread
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    FileCopyGUI window = new FileCopyGUI();
                    window.frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    public FileCopyGUI() {
        initialize();
    }

    private void initialize() {
        frame = new JFrame();
        frame.setBounds(100, 100, 450, 300);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JPanel panel = new JPanel();
        frame.getContentPane().add(panel, BorderLayout.CENTER);
        panel.setLayout(null);

        JLabel lblNewLabel = new JLabel("Source File:");
        lblNewLabel.setBounds(10, 11, 77, 14);
        panel.add(lblNewLabel);

        JLabel lblNewLabel_1 = new JLabel("Destination File:");
        lblNewLabel_1.setBounds(10, 36, 96, 14);
        panel.add(lblNewLabel_1);

        btnSelectSource = new JButton("Select");
        btnSelectSource.setBounds(116, 7, 89, 23);
        panel.add(btnSelectSource);

        btnSelectDest = new JButton("Select");
        btnSelectDest.setBounds(116, 32, 89, 23);
        panel.add(btnSelectDest);

        lblSource = new JLabel("");
        lblSource.setBounds(215, 11, 209, 14);
        panel.add(lblSource);

        lblDest = new JLabel("");
        lblDest.setBounds(215, 36, 209, 14);
        panel.add(lblDest);

        btnCopy = new JButton("Copy");
        btnCopy.setBounds(335, 227, 89, 23);
        panel.add(btnCopy);

        progressBar = new JProgressBar();
        progressBar.setBounds(10, 227, 315, 23);
        panel.add(progressBar);

        // Add event listeners to the buttons
        btnSelectSource.addActionListener(e -> {
            JFileChooser chooser = new JFileChooser();
            int result = chooser.showOpenDialog(frame);
            if (result == JFileChooser.APPROVE_OPTION) {
                sourceFile = chooser.getSelectedFile();
                lblSource.setText(sourceFile.getAbsolutePath());
            }
        });

        btnSelectDest.addActionListener(e -> {
            JFileChooser chooser = new JFileChooser();
            int result = chooser.showSaveDialog(frame);
            if (result == JFileChooser.APPROVE_OPTION) {
                destFile = chooser.getSelectedFile();
                lblDest.setText(destFile.getAbsolutePath());
            }
        });

        btnCopy.addActionListener(e -> {
            if (sourceFile == null || destFile == null) {
                JOptionPane.showMessageDialog(frame, "Please select source and destination files.");
                return;
            }

            try {
                FileInputStream in = new FileInputStream(sourceFile);
                FileOutputStream out = new FileOutputStream(destFile);

                byte[] buffer = new byte[1024];
                int length;
                int totalBytesRead = 0;
                int fileSize = (int) sourceFile.length();

                progressBar.setMaximum(fileSize);

                while ((length = in.read(buffer)) > 0) {
                    out.write(buffer, 0, length);
                    totalBytesRead += length;
                    progressBar.setValue(totalBytesRead);
                }

                in.close();
                out.close();

                JOptionPane.showMessageDialog(frame, "File copied successfully.");
            } catch (IOException ex) {
                ex.printStackTrace();
                JOptionPane.showMessageDialog(frame, "Error copying file: " + ex.getMessage());
            }
        });
    }
}

代码中，我们使用了`JFileChooser`来选择源文件和目标文件，使用`JProgressBar`来显示复制进度，并在“Copy”按钮上添加了事件监听器，以便在单击按钮时执行文件复制操作。我们还使用了Java 8的lambda表达式来简化代码。

注意：在使用此程序时，请记得选择正确的源文件和目标文件，并确保目标文件不存在或为空，否则可能会导致数据丢失。