Java编写的文本编辑器

界面： 代码（编译后可直接运行）： //简单的类似记事本的文档编辑器 import java.awt.*; import javax.swing.*; import java.io.*; public class MyTxt { public static void main(String[] args) { Aframe frame = new Aframe(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.show(); } } class Aframe extends JFrame { public Aframe() { setTitle("我的记事本"); setSize(WIDTH, HEIGHT); Container contentPane = getContentPane(); JPanel txtPanel = new JPanel(); JPanel comboxPanel = new JPanel(); JPanel textPanel = new JPanel(); txtArea=new JTextArea("",17,40); JScrollPane scrollPane =new JScrollPane(txtArea); txtPanel.add(scrollPane); contentPane.add(comboxPanel,BorderLayout.NORTH); contentPane.add(txtPanel); contentPane.add(textPanel,BorderLayout.SOUTH); //Caidan lan:添加主菜单并设置快捷键 JMenuBar menuBar =new JMenuBar(); setJMenuBar(menuBar); fileMenu=new JMenu("文件(F)"); editMenu=new JMenu("编辑(E)"); typeMenu=new JMenu("格式(O)"); viewMenu=new JMenu("查看(V)"); helpMenu=new JMenu("帮助(H)"); aboutMenu=new JMenu("关于(A)"); fileMenu.setMnemonic('F'); editMenu.setMnemonic('E'); typeMenu.setMnemonic('O'); viewMenu.setMnemonic('V'); helpMenu.setMnemonic('H'); aboutMenu.setMnemonic('A'); menuBar.add(fileMenu); menuBar.add(editMenu); menuBar.add(typeMenu); menuBar.add(viewMenu); menuBar.add(aboutMenu); menuBar.add(helpMenu); //wenjian“文件”菜单的子菜单添加以及设置加速器，监听器 aa=fileMenu.add(new ShowAction("新建")); aa.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N,InputEvent.CTRL_MASK)); ab=fileMenu.add(new ShowAction("打开")); ab.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O,InputEvent.CTRL_MASK)); ac=fileMenu.add(new ShowAction("保存")); ac.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,InputEvent.CTRL_MASK)); ad=fileMenu.add(new ShowAction("另存为")); ad.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_A,InputEvent.CTRL_MASK)); fileMenu.addSeparator(); ae=fileMenu.add(new ShowAction("页面设置")); ae.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_U,InputEvent.CTRL_MASK)); af=fileMenu.add(new ShowAction("打印")); af.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_P,InputEvent.CTRL_MASK)); fileMenu.addSeparator();//分割线 ag=fileMenu.add(new ShowAction("退出")); ag.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X,InputEvent.CTRL_MASK)); //bianji“编辑”菜单的子菜单添加以及设置加速器，监听器 ah=editMenu.add(new ShowAction("撤消")); editMenu.addSeparator(); ah.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Z,InputEvent.CTRL_MASK)); ai=editMenu.add(new ShowAction("剪切")); ai.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X,InputEvent.CTRL_MASK)); aj=editMenu.add(new ShowAction("复制")); aj.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C,InputEvent.CTRL_MASK)); an=editMenu.add(new ShowAction("粘贴")); an.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_V,InputEvent.CTRL_MASK)); ak=editMenu.add(new ShowAction("删除")); ak.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_L,InputEvent.CTRL_MASK)); editMenu.addSeparator(); al=editMenu.add(new ShowAction("查找")); al.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_F,InputEvent.CTRL_MASK)); am=editMenu.add(new ShowAction("全选")); am.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_A,InputEvent.CTRL_MASK)); //geshi“格式”菜单的子菜单添加以及设置加速器，监听器 zdhh=new JMenu("自动换行(L)"); zdhh.setMnemonic('L'); typeMenu.add(zdhh); ButtonGroup group =new ButtonGroup(); xz=new JRadioButtonMenuItem("选择"); xz.addActionListener(new ShowAction("选择")); xz.setSelected(true); qxxz=new JRadioButtonMenuItem("取消"); qxxz.addActionListener(new ShowAction("取消")); qxxz.setSelected(true); group.add(xz);group.add(qxxz); zdhh.add(xz);zdhh.add(qxxz); bj=typeMenu.add(new ShowAction("背景颜色")); bj.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C,InputEvent.CTRL_MASK)); zt=typeMenu.add(new ShowAction("字体")); zt.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_F,InputEvent.CTRL_MASK)); //字体弹出框中的“确定”按钮 que=new Button("确定"); que.addActionListener(new boxlistener()); //chakan“查看”菜单的子菜单添加以及设置加速器，监听器 ztl=viewMenu.add(new ShowAction("状态栏")); ztl.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,InputEvent.CTRL_MASK)); //guanyu“关于”菜单的子菜单添加以及设置加速器，监听器 zzxx=aboutMenu.add(new ShowAction("作者信息")); zzxx.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N,InputEvent.CTRL_MASK)); bq=aboutMenu.add(new ShowAction("版权")); bq.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_B,InputEvent.CTRL_MASK)); sm=aboutMenu.add(new ShowAction("声明")); sm.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,InputEvent.CTRL_MASK)); //bangzhu“帮助”菜单的子菜单添加以及设置加速器，监听器 shm=helpMenu.add(new ShowAction("说明")); shm.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,InputEvent.CTRL_MASK)); //文本框底部工具栏的设置 toolbar2=new JToolBar(); textPanel.add(toolbar2); text1=new JTextField("就绪",10); text2=new JTextField("欢迎使用该记事本！",10); text3=new JTextField("",10); text4=new JTextField("",10); textPanel.setLayout(new GridLayout(1, 4)); toolbar2.add(text1); toolbar2.add(text2); toolbar2.add(text3); toolbar2.add(text4); text1.setEditable(false); text2.setEditable(false); text3.setEditable(false); text4.setEditable(false);