java课程设计 - 电脑记事本程序 swing io流 图形化界面 文件类 文件管理器类

package PageUI; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.*; import Function.*; public class MainPage1 { //page1 private JFrame frame; private JMenuBar menuBar; private JMenu fileMenu; private JMenuItem newMenuItem; private JMenuItem openMenuItem; private JMenuItem saveMenuItem; private JMenuItem cleanMenuItem; public JTextArea textArea; public MainPage1() { frame = new JFrame("记事本"); frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); frame.setSize(800, 600); frame.setLayout(new BorderLayout()); frame.setVisible(true); frame.setLocationRelativeTo(null);//页面居中 // 创建菜单栏 menuBar = new JMenuBar(); fileMenu = new JMenu("文件"); newMenuItem = new JMenuItem("新建"); openMenuItem = new JMenuItem("打开"); saveMenuItem = new JMenuItem("保存"); cleanMenuItem = new JMenuItem("清空"); fileMenu.add(newMenuItem); fileMenu.add(openMenuItem); fileMenu.add(saveMenuItem); fileMenu.add(cleanMenuItem); menuBar.add(fileMenu); frame.setJMenuBar(menuBar); //外观菜单栏 JMenu ColorMenu = new JMenu("外观"); JMenuItem blueMenuItem = new JMenuItem("蓝色"); JMenuItem greenMenuItem = new JMenuItem("绿色"); JMenuItem pinkMenuItem = new JMenuItem("粉色"); JMenuItem whiteMenuItem = new JMenuItem("白色"); ColorMenu.add(whiteMenuItem); ColorMenu.add(blueMenuItem); ColorMenu.add(greenMenuItem); ColorMenu.add(pinkMenuItem); menuBar.add(ColorMenu); // 创建文本区域 textArea = new JTextArea(); JScrollPane scrollPane = new JScrollPane(textArea); frame.add(scrollPane, BorderLayout.CENTER); // 添加事件监听器 //新建 /*newMenuItem.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { textArea.setText("请输入"); } });*/ newMenuItem.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { MainPage1 newWindow = new MainPage1(); // 实例化新的记事本窗口 } }); //清空 cleanMenuItem.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { textArea.setText(""); } }); //打开 openMenuItem.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { // 在这里添加打开文件的代码逻辑 System.out.println("打开按钮被点击"); OpenFunction openFunction = new OpenFunction(textArea); } }); //保存 //文本框路径rode saveMenuItem.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { SaveFunction.saveFile(textArea);//保存路径的方法 } }); //外观更改 blueMenuItem.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { textArea.setBackground(Color.blue); } }); greenMenuItem.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { textArea.setBackground(Color.green); } }); pinkMenuItem.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { textArea.setBackground(Color.pink); } }); whiteMenuItem.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { textArea.setBackground(Color.white); } }); } }