这个是表现层的main方法。

数据存储的方式为文件存储和读写。

分层的思想是：表现层调用逻辑层，逻辑层调用数据层。不可以反过来

每个class文件都带了包名字，建好文件就可以了。

/* * AddressApp.java * */package cn.hncu.addr;import java.awt.Panel;import javax.swing.JPanel;import cn.hncu.addr.ui.AddPanel;import cn.hncu.addr.ui.ListPanel;/**** @author  __chx__*/public class AddressApp extends javax.swing.JFrame {    /** Creates new form AddressApp */    public AddressApp() {        super("地址的增删改查小软件!");        initComponents();        this.setContentPane(new ListPanel(this));        this.setResizable(false);//设置窗口不能缩放    }    private void initComponents() {        menuBar = new javax.swing.JMenuBar();        fileMenu = new javax.swing.JMenu();        openMenuItem = new javax.swing.JMenuItem();        saveMenuItem = new javax.swing.JMenuItem();        saveAsMenuItem = new javax.swing.JMenuItem();        exitMenuItem = new javax.swing.JMenuItem();        editMenu = new javax.swing.JMenu();        cutMenuItem = new javax.swing.JMenuItem();        copyMenuItem = new javax.swing.JMenuItem();        pasteMenuItem = new javax.swing.JMenuItem();        deleteMenuItem = new javax.swing.JMenuItem();        helpMenu = new javax.swing.JMenu();        contentsMenuItem = new javax.swing.JMenuItem();        aboutMenuItem = new javax.swing.JMenuItem();        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);        setBounds(new java.awt.Rectangle(150, 150, 0, 0));        setMinimumSize(new java.awt.Dimension(800, 600));        getContentPane().setLayout(null);        fileMenu.setText("File");        openMenuItem.setText("Open");        fileMenu.add(openMenuItem);        saveMenuItem.setText("Save");        fileMenu.add(saveMenuItem);        saveAsMenuItem.setText("Save As ...");        fileMenu.add(saveAsMenuItem);        exitMenuItem.setText("Exit");        exitMenuItem.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(java.awt.event.ActionEvent evt) {                exitMenuItemActionPerformed(evt);            }        });        fileMenu.add(exitMenuItem);        menuBar.add(fileMenu);        editMenu.setText("Edit");        cutMenuItem.setText("Cut");        editMenu.add(cutMenuItem);        copyMenuItem.setText("Copy");        editMenu.add(copyMenuItem);        pasteMenuItem.setText("Paste");        editMenu.add(pasteMenuItem);        deleteMenuItem.setText("Delete");        editMenu.add(deleteMenuItem);        menuBar.add(editMenu);        helpMenu.setText("Help");        contentsMenuItem.setText("Contents");        helpMenu.add(contentsMenuItem);        aboutMenuItem.setText("About");        helpMenu.add(aboutMenuItem);        menuBar.add(helpMenu);        setJMenuBar(menuBar);        pack();    }    private void exitMenuItemActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_exitMenuItemActionPerformed        System.exit(0);    }    public static void main(String args[]) {        java.awt.EventQueue.invokeLater(new Runnable() {            public void run() {                new AddressApp().setVisible(true);            }        });    }    private javax.swing.JMenuItem aboutMenuItem;    private javax.swing.JMenuItem contentsMenuItem;    private javax.swing.JMenuItem copyMenuItem;    private javax.swing.JMenuItem cutMenuItem;    private javax.swing.JMenuItem deleteMenuItem;    private javax.swing.JMenu editMenu;    private javax.swing.JMenuItem exitMenuItem;    private javax.swing.JMenu fileMenu;    private javax.swing.JMenu helpMenu;    private javax.swing.JMenuBar menuBar;    private javax.swing.JMenuItem openMenuItem;    private javax.swing.JMenuItem pasteMenuItem;    private javax.swing.JMenuItem saveAsMenuItem;    private javax.swing.JMenuItem saveMenuItem;}