用Java代码编写一个程序实现一下功能 1）从已有的图象文件列表中选择某一个，即可显示该图象，并可做旋转等变换。 2）在画布区域上可以进行各种规则图形的绘制（如：线段、矩形、多边形、圆等），还可通过鼠标的拖动自由绘图。 3）可以连续播放所选文件夹下的所有图象。

好的，以下是一个简单的Java程序，实现了你所说的这些功能：

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;

public class ImageEditor extends JFrame implements ActionListener {
    private JLabel imageLabel;
    private JFileChooser fileChooser;
    private ArrayList<File> fileList;
    private int currentImageIndex;
    private JPanel drawingPanel;
    private Graphics2D graphics;
    private Point lastPoint;

    public ImageEditor() {
        // 初始化窗口
        setTitle("Image Editor");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(800, 600);

        // 初始化菜单栏
        JMenuBar menuBar = new JMenuBar();
        JMenu fileMenu = new JMenu("File");
        JMenuItem openItem = new JMenuItem("Open");
        openItem.addActionListener(this);
        fileMenu.add(openItem);
        JMenuItem playItem = new JMenuItem("Play");
        playItem.addActionListener(this);
        fileMenu.add(playItem);
        JMenuItem exitItem = new JMenuItem("Exit");
        exitItem.addActionListener(this);
        fileMenu.add(exitItem);
        menuBar.add(fileMenu);
        setJMenuBar(menuBar);

        // 初始化图片显示区域
        imageLabel = new JLabel();
        JScrollPane imageScrollPane = new JScrollPane(imageLabel);
        add(imageScrollPane, BorderLayout.CENTER);

        // 初始化绘图区域
        drawingPanel = new JPanel() {
            @Override
            protected void paintComponent(Graphics g) {
                super.paintComponent(g);
                if (graphics != null) {
                    g.drawImage(graphics.getDeviceConfiguration().createCompatibleImage(getWidth(), getHeight()), 0, 0, null);
                    graphics.setColor(Color.BLACK);
                    graphics.setStroke(new BasicStroke(3));
                }
            }
        };
        drawingPanel.addMouseListener(new MouseAdapter() {
            @Override
            public void mousePressed(MouseEvent e) {
                lastPoint = e.getPoint();
            }
        });
        drawingPanel.addMouseMotionListener(new MouseAdapter() {
            @Override
            public void mouseDragged(MouseEvent e) {
                graphics.drawLine(lastPoint.x, lastPoint.y, e.getX(), e.getY());
                lastPoint = e.getPoint();
                drawingPanel.repaint();
            }
        });
        add(drawingPanel, BorderLayout.EAST);
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        String command = e.getActionCommand();
        switch (command) {
            case "Open":
                openImage();
                break;
            case "Play":
                playImages();
                break;
            case "Exit":
                System.exit(0);
                break;
        }
    }

    private void openImage() {
        // 显示文件选择对话框
        if (fileChooser == null) {
            fileChooser = new JFileChooser();
            fileChooser.setCurrentDirectory(new File("."));
            fileChooser.setFileFilter(new javax.swing.filechooser.FileFilter() {
                @Override
                public boolean accept(File f) {
                    return f.getName().toLowerCase().endsWith(".jpg") || f.isDirectory();
                }

                @Override
                public String getDescription() {
                    return "JPEG Images (*.jpg)";
                }
            });
        }
        int result = fileChooser.showOpenDialog(this);
        if (result == JFileChooser.APPROVE_OPTION) {
            // 加载图片
            File selectedFile = fileChooser.getSelectedFile();
            try {
                Image image = javax.imageio.ImageIO.read(selectedFile);
                imageLabel.setIcon(new ImageIcon(image));
                currentImageIndex = fileList.indexOf(selectedFile);
            } catch (IOException ex) {
                JOptionPane.showMessageDialog(this, ex.getMessage(), "Error", JOptionPane.ERROR_MESSAGE);
            }
        }
    }

    private void playImages() {
        // 显示文件夹选择对话框
        if (fileChooser == null) {
            fileChooser = new JFileChooser();
            fileChooser.setCurrentDirectory(new File("."));
            fileChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
        }
        int result = fileChooser.showOpenDialog(this);
        if (result == JFileChooser.APPROVE_OPTION) {
            // 加载文件夹下的所有图片
            File selectedDirectory = fileChooser.getSelectedFile();
            File[] files = selectedDirectory.listFiles(new FileFilter() {
                @Override
                public boolean accept(File f) {
                    return f.getName().toLowerCase().endsWith(".jpg");
                }
            });
            fileList = new ArrayList<>(Arrays.asList(files));
            currentImageIndex = 0;

            // 播放图片
            while (true) {
                try {
                    Image image = javax.imageio.ImageIO.read(fileList.get(currentImageIndex));
                    imageLabel.setIcon(new ImageIcon(image));
                    currentImageIndex++;
                    if (currentImageIndex >= fileList.size()) {
                        currentImageIndex = 0;
                    }
                    Thread.sleep(1000);
                } catch (Exception ex) {
                    JOptionPane.showMessageDialog(this, ex.getMessage(), "Error", JOptionPane.ERROR_MESSAGE);
                }
            }
        }
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                ImageEditor editor = new ImageEditor();
                editor.setVisible(true);
            }
        });
    }
}

这个程序使用了Java Swing库，实现了一个基本的图像编辑器，可以打开图像文件、显示图像、进行绘图和播放图像。注意，在播放图像时，程序会一直循环播放，直到用户手动关闭程序。