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。

以下是一个简单的Java程序，实现了上述功能：

import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
import javax.swing.*;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class ImageEditor extends JFrame {
    private BufferedImage image;
    private JPanel imagePanel;
    private JPanel drawPanel;
    private JComboBox<String> imageSelector;
    private List<Shape> shapes;

    public ImageEditor() {
        super("Image Editor");

        // 初始化变量
        shapes = new ArrayList<>();

        // 创建图像选择器
        File folder = new File("/path/to/folder");  // 设置图像文件夹的路径
        File[] files = folder.listFiles((dir, name) -> name.endsWith(".jpg"));  // 只选择 JPG 文件
        String[] filenames = new String[files.length];
        for (int i = 0; i < files.length; i++) {
            filenames[i] = files[i].getName();
        }
        imageSelector = new JComboBox<>(filenames);
        imageSelector.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                loadSelectedImage();
            }
        });

        // 创建图像显示面板
        imagePanel = new JPanel() {
            public void paintComponent(Graphics g) {
                super.paintComponent(g);
                if (image != null) {
                    Graphics2D g2d = (Graphics2D)g;
                    g2d.drawImage(image, 0, 0, null);
                    for (Shape shape : shapes) {
                        g2d.draw(shape);
                    }
                }
            }
        };

        // 创建绘图面板
        drawPanel = new JPanel();
        drawPanel.addMouseListener(new MouseAdapter() {
            public void mousePressed(MouseEvent e) {
                Point2D p = new Point2D.Double(e.getX(), e.getY());
                shapes.add(new Line2D.Double(p, p));
            }
        });
        drawPanel.addMouseMotionListener(new MouseAdapter() {
            public void mouseDragged(MouseEvent e) {
                Point2D p = new Point2D.Double(e.getX(), e.getY());
                Line2D line = (Line2D)shapes.get(shapes.size()-1);
                line.setLine(line.getP1(), p);
                imagePanel.repaint();
            }
        });

        // 创建按钮
        JButton rotateButton = new JButton("Rotate");
        rotateButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                if (image != null) {
                    int w = image.getWidth();
                    int h = image.getHeight();
                    AffineTransform transform = AffineTransform.getRotateInstance(Math.PI/6, w/2, h/2);
                    AffineTransformOp op = new AffineTransformOp(transform, AffineTransformOp.TYPE_BILINEAR);
                    image = op.filter(image, null);
                    imagePanel.repaint();
                }
            }
        });

        JButton playButton = new JButton("Play");
        playButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                for (File file : files) {
                    try {
                        image = ImageIO.read(file);
                        imagePanel.repaint();
                        Thread.sleep(1000);  // 暂停 1 秒
                    } catch (IOException | InterruptedException ex) {
                        ex.printStackTrace();
                    }
                }
            }
        });

        // 创建布局
        Container contentPane = getContentPane();
        contentPane.setLayout(new BorderLayout());
        JPanel controlPanel = new JPanel();
        controlPanel.add(imageSelector);
        controlPanel.add(rotateButton);
        controlPanel.add(playButton);
        contentPane.add(controlPanel, BorderLayout.NORTH);
        contentPane.add(imagePanel, BorderLayout.CENTER);
        contentPane.add(drawPanel, BorderLayout.SOUTH);

        // 显示窗口
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(600, 600);
        setVisible(true);
    }

    private void loadSelectedImage() {
        String filename = (String)imageSelector.getSelectedItem();
        try {
            image = ImageIO.read(new File("/path/to/folder/" + filename));  // 设置图像文件夹的路径
            imagePanel.setPreferredSize(new Dimension(image.getWidth(), image.getHeight()));
            shapes.clear();
            imagePanel.repaint();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }

    public static void main(String[] args) {
        new ImageEditor();
    }
}

注意替换代码中的 `/path/to/folder` 为实际的图像文件夹路径。