Java中基本数据类型与流的操作方法

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");
}

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");
　}
}

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