java - 序列化数组列表

Question

现在我想知道你们是否可以帮助我将 ArrayList 序列化到文件中。现在我正在做一份学校的总结，但是我没有遇到真正的编码问题。我正在制作的是一个 GUI 地址簿，当用户添加地址时，它会存储到数组列表中并添加到组合框中。这就是我正在做的事情。我要问的是你是否可以序列化Arraylists。如果可以的话，能教教我怎么做吗？或者至少给我一些教程？

非常感谢。如果你们在回答之前需要查看代码，请告诉我，我会展示它。再次非常感谢您。

好的，这是我的整个代码:

import java.awt.EventQueue;


public class Address_Book {

    private JFrame frame;
    private JTextField newName;
    private JTextField newAddress;
    private JTextField newPhoneAddress;
    ArrayList<Book> test = new ArrayList<Book>();

    /**
     * Launch the application.
     */
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    Address_Book window = new Address_Book();
                    window.frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    /**
     * Create the application.
     */
    public Address_Book() {
        initialize();
    }

    /**
     * Initialize the contents of the frame.
     */
    private void initialize() {
        frame = new JFrame();
        frame.setBounds(100, 100, 371, 262);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().setLayout(null);

        final JComboBox comboBox = new JComboBox();
        final DefaultComboBoxModel model = new DefaultComboBoxModel();

        newName = new JTextField();
        newName.setBounds(10, 29, 79, 20);
        frame.getContentPane().add(newName);
        newName.setColumns(10);

        JLabel lbl1 = new JLabel("Enter New Name:");
        lbl1.setBounds(10, 11, 107, 14);
        frame.getContentPane().add(lbl1);

        JLabel lbl2 = new JLabel("Enter New Address:");
        lbl2.setBounds(110, 11, 107, 14);
        frame.getContentPane().add(lbl2);

        newAddress = new JTextField();
        newAddress.setColumns(10);
        newAddress.setBounds(109, 29, 96, 20);
        frame.getContentPane().add(newAddress);

        newPhoneAddress = new JTextField();
        newPhoneAddress.setColumns(10);
        newPhoneAddress.setBounds(215, 29, 130, 20);
        frame.getContentPane().add(newPhoneAddress);

        JLabel lbl3 = new JLabel("Enter New Phone number:");
        lbl3.setBounds(215, 11, 140, 14);
        frame.getContentPane().add(lbl3);

        JButton btnAddNewContact = new JButton("Add new contact");
        btnAddNewContact.addMouseListener(new MouseAdapter() {
            @Override
            public void mousePressed(MouseEvent arg0) {
                test.add( (new Book(newName.getText(), newAddress.getText(), newPhoneAddress.getText())));
                //mergesort.mergesort(test, 0, test.size() - 1);
                model.removeAllElements();
                for(int i=0; i < test.size();i++){
                    model.addElement(test.get(i).getContact()); 
                }
                comboBox.setModel(model);
                newName.setText(""); 
                newAddress.setText("");
                newPhoneAddress.setText("");
            }
        });
        btnAddNewContact.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
            }
        });
        btnAddNewContact.setBounds(10, 53, 335, 23);
        frame.getContentPane().add(btnAddNewContact);

        JLabel lbl4 = new JLabel("Current Contacts:");
        lbl4.setBounds(10, 87, 107, 14);
        frame.getContentPane().add(lbl4);

        comboBox.setModel(model);
        comboBox.setBounds(10, 101, 335, 20);
        comboBox.setSelectedIndex(test.size()-1);
        frame.getContentPane().add(comboBox);
    }
}

这是我的目标:

public class Book implements Comparable {
     private String flName, Address, pNumber;

    public Book(String Name, String address, String phoneNumber ){
        setFlName(Name);
        setAddress(address);
        setpNumber(phoneNumber);
    }

    public String getpNumber() {
        return pNumber;
    }

    public void setpNumber(String pNumber) {
        this.pNumber = pNumber;
    }

    public String getAddress() {
        return Address;
    }

    public void setAddress(String address) {
        Address = address;
    }

    public String getFlName() {
        return flName;
    }

    public void setFlName(String flName) {
        this.flName = flName;
    }  

    public String getContact() {
        return flName + " " + Address + " " + pNumber;
    }

    public int compareTo(Object c) {
        Book testBook = (Book)c;

        if (testBook.getFlName().compareTo(this.getFlName()) < 0){
            return(-1);
        }else if(testBook.getFlName().compareTo(this.getFlName()) == 0){
            return(0);
        }else{
            return(1);
        }
    }

}

现在，我再次不确定如何继续使 Arraylists 可序列化。我使用过对象，但没有使用Arraylists，所以我不知道它是否是同一个过程。我只是寻求建议，或者一些关于使 ArrayList 可序列化的精彩教程。

Answer 1

摘自 ArrayList 文档 here :

All Implemented Interfaces: Serializable, Cloneable, Iterable, Collection, List, RandomAccess

所以是的，它是可序列化的。与使用 Java 中的任何其他流一样，执行此操作非常简单，只需查看 ObjectOutputStream并在ObjectInputStream .