package objectstream;

import testclass.Person;

import java.io.ObjectOutputStream;

import java.io.IOException;

import java.io.FileOutputStream;

import java.io.FileInputStream;

import java.io.ObjectInputStream;

class ObjectStreamDemo{

        

        public static void writeObj()throws IOException{

          ObjectOutputStream oos=new ObjectOutputStream(new FileOutputStream("Person.txt"));//创建写入指定 OutputStream 的 ObjectOutputStream。

                                                                                                                                                                                //此构造方法将序列化流部分写入底层流

        

          oos.writeObject(new Person("zhang",12,"haha"));//将指定的对象写入 ObjectOutputStream

          /*

          对象的类、类的签名(SerialVersionUID)，以及类及其所有父类的非瞬态和非静态字段的值都将被写入

          */

          

          oos.close();

        }

        

        public static void readObj()throws IOException,ClassNotFoundException{

          ObjectInputStream ois=new ObjectInputStream(new FileInputStream("Person.txt"));//创建从指定 InputStream 读取的 ObjectInputStream。

          

          Person p=(Person)ois.readObject();//将读取流中的一个对象返回,当有多个对象可以采用循环读取