public class BlurAndSharpenDemo extends JFrame implements ActionListener { private JPanel jPanel = new JPanel() //面板jPanel用于容纳模糊、锐化、还原图像按钮 private JButton buttonFile //打开图像文件按钮 private JButton buttonBlur //模糊图像按钮 private JButton buttonSharpen //锐化图像按钮 private JButton buttonReset //还原图像按钮 ImagePanel imagePanel = new ImagePanel() //创建ImagePanel对象用于绘制图像-public class BlurAndSharpenDemo extends JFrame implements ActionListener { private JPanel jPanel = new JPanel()　 private JButton buttonFile　 private JButton buttonBlur　 private JButton buttonSharpen　private JButton buttonReset　ImagePanel imagePanel = new ImagePanel()