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