【笔记】ObjectOutputStream

package object;

import java.io.*;
import java.util.ArrayList;

public class ConvertedDemo {
    public static void main(String[] args) throws IOException, ClassNotFoundException {
        Student stu1 = new Student("张三",23);
        Student stu2 = new Student("李四",24);
        Student stu3 = new Student("王五",25);
        ArrayList list = new ArrayList<>();
        list.add(stu1);
        list.add(stu2);
        list.add(stu3);
//        用一个学生类的集合装数据
        ObjectOutputStream ops =new ObjectOutputStream(new FileOutputStream("charstream\student.txt"));
//          ObjectOutputStream是操作对象数据的
        ops.writeObject(list);
//        将这个学生类的集合写入文件
        ops.close();

        ObjectInputStream ois = new ObjectInputStream(new FileInputStream("charstream\student.txt"));
//        将读取的数据强转成一个学生类的集合
        ArrayList ol = (ArrayList )ois.readObject();
        for (Student student : ol) {
            System.out.println(student);
        }
        ois.close();

    }
}