带有Seri​​alizable Person的java通讯录..如何列出所有联系人和搜索？

Question

我必须为我的学校编写一个java应用程序..这是我的第一个java程序，所以如果你看到任何不好的代码，不要被高估！

我的想法是： 1.只有一个窗口 2.在右侧显示一个创建字段 3.每个新人都将保存在名为/ menschen的文件夹中作为“firstname.lastname.ser” 功能序列化已经完成了。 4.显示左侧所有已存在的人员的列表以及搜索的可能性...... 5.删除和更新人

我现在处于第4步，无法完成它...我也认为我的代码中存在一些错误和错误...... :(

我想我必须扫描文件夹/ menschen以获取所有.ser文件并从所有文件中创建一个数组并在窗口中的列表中显示...

所以这是班级：名为Adressverwaltung（德语）

    /*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package adressverwaltung;

import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JLabel;
import javax.swing.JButton;
import javax.swing.JOptionPane;
// FILE
import java.io.*;
import java.util.*;
import java.util.Formatter;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.awt.HeadlessException;
import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.JTextField;
import javax.swing.SpringLayout;

/**
 *
 * @author john.smith
 */
public class Adressverwaltung {

    JFrame mainWindow;

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {

        Adressverwaltung verweiss = new Adressverwaltung();
        verweiss.main();


    }

    public void main() {
        mainWindow = new JFrame();
        mainWindow.setBounds(0, 0, 800, 400);
        mainWindow.setLocationRelativeTo(null);

        mainWindow.setLayout(null);
        mainWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        mainWindow.setResizable(false);
        mainWindow.setVisible(true);
        mainWindow.setLayout(new FlowLayout());      

        menu();

    }

    private static void deserialize(Person m) {

        Person e = null;

        try {
            FileInputStream fileIn =
                    new FileInputStream("menschen\\" + m.vorname + "." + m.nachname + ".ser");
            ObjectInputStream in = new ObjectInputStream(fileIn);
            e = (Person) in.readObject();
            in.close();
            fileIn.close();
        } catch (IOException i) {
            // i.printStackTrace();
            return;
        } catch (ClassNotFoundException c) {
            System.out.println("Mensch class not found");
            // c.printStackTrace();

            return;
        }

        System.out.println("Deserialized Employee...");
        System.out.println("Vorname: " + e.vorname);
    }

    private static void serialize(Person m) {

        try {
            FileOutputStream fileOut =
                    new FileOutputStream("menschen\\" + m.vorname + "." + m.nachname + ".ser");
            ObjectOutputStream out =
                    new ObjectOutputStream(fileOut);
            out.writeObject(m);
            out.close();
            fileOut.close();
        } catch (IOException i) {
            i.printStackTrace();
        }
    }

    private static void check(String url) {
        File f = new File(url);
        if (!f.exists()) {
            try {
                Formatter format = new Formatter(f);
            } catch (FileNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

    public void menu() {

        JPanel list = new JPanel();

        list.setBorder( BorderFactory.createLineBorder( Color.black ) );        
        list.setPreferredSize( new java.awt.Dimension( 400, 360) );        
        list.setBackground(Color.white);
        mainWindow.add(list);
        // Wir lassen unseren Dialog anzeigen
        mainWindow.setVisible(true);


        int ButtonWidth = 100;
        int ButtonHeight = 30;
        int ButtonTop = 10;

        JButton Button1 = new JButton("List all");
        JButton Button3 = new JButton("Search");

        Button1.setBounds(10, ButtonTop, ButtonWidth, ButtonHeight);
        Button3.setBounds(230, ButtonTop, ButtonWidth, ButtonHeight);

        list.add(Button1);
        list.add(Button3);

        mainWindow.add(list);



        createForm();

        Button1.addActionListener(new ActionListener() {
            public void actionPerformed(final ActionEvent e) {
                JOptionPane.showMessageDialog(null, "Hello World", "Tutorial 2", JOptionPane.INFORMATION_MESSAGE);
            }
        });
    }


    private void createForm() {

        JPanel p = new JPanel();
        p.setLayout(new GridLayout(3,2));
        JButton b = new JButton("Neue Person!");
        JLabel vornameLabel = new JLabel("Vorname:");
        final JTextField vorname = new JTextField();
        JLabel nachnameLabel = new JLabel("Nachname:");
        final JTextField nachname = new JTextField();

        p.add( vornameLabel );
        p.add( vorname );
        p.add( nachnameLabel );
        p.add( nachname );
        p.add( b );
        p.setBorder( BorderFactory.createLineBorder( Color.black ) );        
        p.setPreferredSize( new java.awt.Dimension( 300, 100) );        
        p.setBackground(Color.white);
        mainWindow.add(p);
        // Wir lassen unseren Dialog anzeigen
        mainWindow.setVisible(true);

        b.addActionListener(new ActionListener() {
            public void actionPerformed(final ActionEvent e) {
                Person m = new Person(vorname.getText(), nachname.getText());
                serialize(m);
                JOptionPane.showMessageDialog(null, vorname.getText()+"."+nachname.getText()+".ser abgespeichert.", "Tutorial 2", JOptionPane.INFORMATION_MESSAGE);
            }
        });
    }
}

这是Person类..

   /*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package adressverwaltung;

/**
 *
 * @author Milad
 */
class Person implements java.io.Serializable {
    // Allgemeine Kontaktinformationen:

    public String vorname;
    public String nachname;
    // Adresse
    public String strasse;
    public int hausnummer;
    public int postleitzahl;
    public String ort;
    public String land;
    // Telefon
    public int mobil;
    public int festnetz;
    // Email & Kommentar
    public String mail;
    public String kommentar;

    Person(String vorname, String nachname) {
        this.vorname = vorname;
        this.nachname = nachname;
    }
}

您建议的哪种方式是列出，更新和删除工作的最佳方式？我的代码中有任何重大错误吗？

谢谢！