java使用ObjectOutputStream将对象写入到文件，,下面是要写入类Perso

java使用ObjectOutputStream将对象写入到文件，,下面是要写入类Perso

下面是要写入类Person的定义，此类需要实现Serializable接口

import java.io.Serializable;/** * * @author byrx.net */public class Person implements Serializable {    private String firstName;    private String lastName;    private int age;     /**     * Creates a new instance of Person     */    public Person() {    }    public String getFirstName() {        return firstName;    }    public void setFirstName(String firstName) {        this.firstName = firstName;    }    public String getLastName() {        return lastName;    }    public void setLastName(String lastName) {        this.lastName = lastName;    }    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }    //Overriding toString to be able to print out the object in a readable way    //when it is later read from the file.    public String toString() {        StringBuffer buffer = new StringBuffer();        buffer.append(firstName);        buffer.append("\n");        buffer.append(lastName);        buffer.append("\n");        buffer.append(age);        buffer.append("\n");        return buffer.toString();    }}

下面代码使用ObjectOutputStream将对象写入到文件：

import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.ObjectOutputStream;/** * * @author byrx.net */public class Main {    /**     * Example method for using the ObjectOutputStream class     */    public void writePersons(String filename) {        ObjectOutputStream outputStream = null;        try {            //Construct the LineNumberReader object            outputStream = new ObjectOutputStream(new FileOutputStream(filename));            Person person = new Person();            person.setFirstName("James");            person.setLastName("Ryan");            person.setAge(19);            outputStream.writeObject(person);            person = new Person();            person.setFirstName("Obi-wan");            person.setLastName("Kenobi");            person.setAge(30);            outputStream.writeObject(person);        } catch (FileNotFoundException ex) {            ex.printStackTrace();        } catch (IOException ex) {            ex.printStackTrace();        } finally {            //Close the ObjectOutputStream            try {                if (outputStream != null) {                    outputStream.flush();                    outputStream.close();                }            } catch (IOException ex) {                ex.printStackTrace();            }        }    }    /**     * @param args the command line arguments     */    public static void main(String[] args) {        new Main().writePersons("myFile.txt");    }}