这是一个用Java写的个人信息管理系统.zip

package System; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.util.ArrayList; import java.util.Iterator; import javax.swing.*; import javax.swing.event.TreeSelectionEvent; import javax.swing.event.TreeSelectionListener; import javax.swing.tree.DefaultMutableTreeNode; public class DiaryFrame extends JFrame { //JTree 声明为静态 ， 一个即可 static JTree tree = null; //根节点root ，只有一个即可 static DefaultMutableTreeNode root = new DefaultMutableTreeNode("MY Diary"); //集合nodes保存根节点root上的子节点，每个子节点简称为一个日记本 //用泛型指明集合中的元素DefaultMultableTreeNode类型数据 static ArrayList<DefaultMutableTreeNode> nodes = new ArrayList<DefaultMutableTreeNode>(); JTextArea jta = new JTextArea(20,30); //空菜单条menu MenuBar menu = null; //三个菜单m1,m2,m3 Menu m1,m2,m3, m4; //菜单选项 MenuItem m1a,m1b,m1c,m1d,m2a,m2b,m3a,m3b,pma,pmb,pmc; //弹出式菜单pMenu PopupMenu pMenu = null; //保存和删除按钮 JButton bSave,bDel; //日记类Diary的引用 Diary diary = null; //DefaulttableTreeNode static DefaultMutableTreeNode n = new Diary("生活日记"); //界面初始化 public void launchFrame() { int width = 640,height = 480; setTitle("我的日记"); setSize(width,height); //更换Java咖啡图标 ImageIcon imageIcon = new ImageIcon(getClass().getResource("/images/title.png")); this.setIconImage(imageIcon.getImage()); //设置软件呈现的位置在屏幕中间 setLocation((int)(Toolkit.getDefaultToolkit().getScreenSize().getWidth()-width)/2,(int)(Toolkit.getDefaultToolkit().getScreenSize().getHeight()-height)/2); //初始化菜单条，菜单和菜单选项 menu = new MenuBar(); pMenu = new PopupMenu(); m1 = new Menu("文件"); m2 = new Menu("编辑"); m3 = new Menu("帮助"); m4 = new Menu("退出"); m1a = new MenuItem("new diary"); //设置快捷键 m1a.setShortcut(new MenuShortcut(KeyEvent.VK_N)); m1b = new MenuItem("save diary"); m1b.setShortcut(new MenuShortcut(KeyEvent.VK_S)); m1c = new Menu("del diary"); m1c.setShortcut(new MenuShortcut(KeyEvent.VK_D)); m1d = new MenuItem("exit System"); m1d.setShortcut(new MenuShortcut(KeyEvent.VK_Q)); m1.add(m1a); m1.addSeparator(); m1.add(m1b); m1.add(m1c); m1.add(m1c); m1.addSeparator(); m1.add(m1d); menu.add(m1); m2a = new MenuItem("copy"); m2a.setShortcut(new MenuShortcut(KeyEvent.VK_C)); m2b = new MenuItem("paste"); m2b.setShortcut(new MenuShortcut(KeyEvent.VK_V)); m2.add(m2a); m2.add(m2b); menu.add(m2); m3a = new MenuItem("关于主题"); m3b = new MenuItem("使用手册"); m3.add(m3a); m3.add(m3b); menu.add(m3); menu.add(m4); pma = new MenuItem("new diary"); pmb = new MenuItem("del diary"); pmc = new MenuItem("rename"); pMenu.add(pma); pMenu.addSeparator(); pMenu.add(pmb); pMenu.addSeparator(); pMenu.add(pmc); //添加菜单条 this.setMenuBar(menu); //用根节点root初始化JTree tree = new JTree (root); JScrollPane jsp1 = new JScrollPane(tree); JPanel jp = new JPanel(); jp.setLayout(new BorderLayout()); JScrollPane jsp2 = new JScrollPane(jta); jp.add(jsp2,BorderLayout.CENTER); JPanel bottom= new JPanel(); bSave = new JButton("save"); bDel = new JButton("Del"); bottom.add(bSave); bottom.add(bDel); jp.add(bottom,BorderLayout.SOUTH); //JSpliPane将容器分割向左右两部分 JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,jsp1,jp); //添加一个默认日记本“生活日记 ” nodes.add(n); //监听类，用于监听JTree和JButton MyListener listener = new MyListener(); tree.addTreeSelectionListener(listener); //调用初始化JTree的方法 initTree(); bSave.addActionListener(listener); bDel.addActionListener(listener); //菜单的监听类 MenuListener menuListener = new MenuListener(); m1.addActionListener(menuListener); m2.addActionListener(menuListener); m3.addActionListener(menuListener); this.getContentPane().add(splitPane); this.setVisible(true); } //JTree节点的初始化方法，用于完成树上节点的添加工作 private static void initTree() { //将节点集合中的节点，全部添加到树上 Iterator<DefaultMutableTreeNode> it = nodes.iterator(); while(it.hasNext()) { DefaultMutableTreeNode n = it.next(); root.add(n); } tree.updateUI(); tree.repaint(); } //内部类，菜单监听 class MenuListener implements ActionListener { DiaryFrame df = new DiaryFrame(); public void actionPerformed(ActionEvent e) { //获取用户操作的菜单名称 String label = ((MenuItem)e.getSource()).getLabel(); if(label.equals("文件")) { //根据用户选择的菜单项，实现不同功能 if(e.getActionCommand().equals("new diary")) { //输入对话框，对新建的日记本命名 String value = new JOptionPane().showInputDialog(df,"请输入新建的日记本名称"); //以用户输入的日记本名，新建具有日记本功能的节点】 DefaultMutableTreeNode node = new Diary(value); //将节点添加到集合 nodes.add(node); //重新初始化一次节点 DiaryFrame.initTree(); } } else if(label.equals("edit")) { //对“编辑”菜单的处理 } else { //对帮助菜单的处理 } } } //内部类，监听JTree节点选择和JButton class MyListener implements ActionListener,TreeSelectionListener { DiaryFrame df = new DiaryFrame(); public void actionPerformed(ActionEvent e) { //根据不同的按钮，处理响应时间 //“保存按钮处理” if(e.getSource() == bSave) { DefaultMutableTreeNode node = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent(); //节点node的名字 String str = node.toString(); //如果节点是叶节点，以“日记本名+月+日”为文件名，将日记文本写入文件 if(node.isLeaf()) { BufferedWriter out = null; try { //构造文件名 String fileName = node.getParent().getParent().toString()+node.getParent().toString()+str+".txt"; //构造文件 File file = new File(fileName); //文本文件写入流 out = new BufferedWriter(new FileWriter(file)); out.write(jta.getText(),0,(jta.getText()).length()); out.flush(); new JOptionPane().showMessageDialog(df,"日记创建成功！"); } catch (IOException err) { // TODO: handle exception new JOptionPane().showMessageDialog(df,"日记创建失败！"); err.printStackTrace();