Java中基本数据类型与流(2)

　　package com.j2medev.mingjava;
　　import java.io.*;

　　public class TestDataIO
　　{
　　public static void main(String[] args) throws IOException
　　{
　　Account account = new Account("mingjava","eric.zhan@263.net",25,true);
　　System.out.println("before serialization.........");
　　System.out.println(account.toString());
　　ByteArrayOutputStream baos = new ByteArrayOutputStream();
　　DataOutputStream dos = new DataOutputStream(baos);
　　account.serialize(dos);
　　DataInputStream dis = new DataInputStream(new ByteArrayInputStream(baos.toByteArray()));
　　Account sAccount = Account.deserialize(dis);
　　System.out.println("after serialization..........");
　　System.out.println(sAccount.toString());
　　dos.close();
　　dis.close();
　　}
　　}

　　package com.j2medev.mingjava;
　　import java.io.*;

　　public class Account
　　{
　　private String userName = "";
　　private String email = "";
　　private int age = 0;
　　private boolean gender = false;

　　public Account()
　　{}

　　public Account(String userName, String email, int age, boolean gender)
　　{
　　this.userName = userName;
　　this.email = email;
　　this.age = age;
　　this.gender = gender;
　　}

　　public void serialize(DataOutputStream dos) throws IOException
　　{
　　dos.writeUTF(userName);
　　dos.writeUTF(email);
　　dos.writeInt(age);
　　dos.writeBoolean(gender);
　　}

　　public static Account deserialize(DataInputStream dis) throws IOException
　　{
　　Account account = new Account();
　　account.userName = dis.readUTF();
　　account.email = dis.readUTF();
　　account.age = dis.readInt();
　　account.gender = dis.readBoolean();
　　return account;
　　}

　　public String toString()
　　{
　　return "UserName = " + userName + " Email = " + email + " age = " + age + " gender = " + (gender ? "male" : "female");
　　}
　　}

　　编译运行程序在控制台输出：

　　before serialization.........
　　UserName = mingjava Email = eric.zhan@263.net age = 25 gender = male
　　after serialization..........
　　UserName = mingjava Email = eric.zhan@263.net age = 25 gender = male

　　序列化成功，后面我将讲述如何在J2ME联网中使用序列化机制。