java学习之IO对象流

//注意对象类要打标记实现Serializable接口

 package com.gh;

 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.io.OutputStream;

 public class ObjectStreamDemo {
     /**
      * 对象序列化
      * 把对象写入到文件中
      */
     public static void writeobject(){
         try {
             OutputStream out =new FileOutputStream("1.gh");
             ObjectOutputStream oos=new ObjectOutputStream(out);
             Person p=new Person("小白", 8);
             oos.writeObject(p);
             oos.close();
         } catch (FileNotFoundException e) {
             e.printStackTrace();
         } catch (IOException e) {
             e.printStackTrace();
         }
     }
     /**
      * 对象的反序列化，
      * 从文件中读取对象
      */
     public static void readobject(){
         try {
             InputStream in=new FileInputStream("1.gh");
             ObjectInputStream ois=new ObjectInputStream(in);
             Person ps=(Person)ois.readObject();
             in.close();
             System.out.println(ps);
         } catch (FileNotFoundException e) {
             e.printStackTrace();
         } catch (IOException e) {
             e.printStackTrace();
         } catch (ClassNotFoundException e) {
             e.printStackTrace();
         }
     }
     public static void main(String[] args) {
         //writeobject();
         readobject();
     }
 }

 package com.gh;

 import java.io.Serializable;

 public class Person implements Serializable{//标记可以序列化
     private String name;
     private int age;
     public String getName() {
         return name;
     }
     public void setName(String name) {
         this.name = name;
     }
     public int getAge() {
         return age;
     }
     public void setAge(int age) {
         this.age = age;
     }
     public Person() {
         super();
     }
     public Person(String name, int age) {
         this.name = name;
         this.age = age;
     }
     @Override
     public String toString() {
         return "Person [name=" + name + ", age=" + age + "]";
     }

 }