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 + "]";
    }
    
}