Java中的transient关键字

transient说明一个属性是临时的，不会被序列化。

下面是一个Demo，name声明为 transient，不被序列化

package com.zzs.tet;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.ObjectInput;

import java.io.ObjectInputStream;

import java.io.ObjectOutput;

import java.io.ObjectOutputStream;

import java.io.Serializable;

public class TransientDemo implements Serializable{

    /**

  *

  */

 private static final long serialVersionUID = 1L;

 private  transient String name;

    private String password;

   

 public String getName() {

  return name;

 }

 public void setName(String name) {

  this.name = name;

 }

 public String getPassword() {

  return password;

 }

 public void setPassword(String password) {

  this.password = password;

 }

 /**

  * @param args

  * @throws IOException

  * @throws FileNotFoundException

  * @throws ClassNotFoundException

  */

 public static void main(String[] args) throws FileNotFoundException, IOException, ClassNotFoundException {

  // TODO Auto-generated method stub

  String path="D:"+File.separator+"object.txt";

  File file=new File(path);

  TransientDemo transientDemo=new TransientDemo();

  transientDemo.setName("姓名");

  transientDemo.setPassword("密码");

  ObjectOutput output=new ObjectOutputStream(new FileOutputStream(file));

  output.writeObject(transientDemo);

  ObjectInput input=new ObjectInputStream(new FileInputStream(file));

  TransientDemo demo=( TransientDemo )input.readObject();

  System.out.println(demo.getName()+demo.getPassword());

 }

}

 

输出结果：

null密码