package test.lession3;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.List;

public class ObjectOutputStreamExample {

	
	public static void main(String[] args) throws IOException {
//		Ghi dư liệu
		List<Student> list = new ArrayList<>();
		list.add(new Student("A", "Chung"));
		list.add(new Student("B", "Quynh"));
		list.add(new Student("C", "Mai"));
		FileOutputStream fileOutputStream = null;
		ObjectOutputStream objectOutputStream = null;
		try {
	fileOutputStream = new FileOutputStream("students.dat");//đặt tên là gì cũng đc
			objectOutputStream = new ObjectOutputStream(fileOutputStream);
			objectOutputStream.writeObject(list);
		} catch (IOException e) {
			e.printStackTrace();
		}finally {
			if (fileOutputStream != null) {
				fileOutputStream.close();
			}
			if (objectOutputStream != null) {
				objectOutputStream.close();
			}
		}
	}

}

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.List;    

public class ObjectOutputStreamExample {
public static void main(String[] args) throws IOException {
//Đọc dữ liệu
    List<Student> list = new ArrayList<>();
    FileInputStream fileInputStream = null;
    ObjectInputStream objectInputStream = null;

    try {
        fileInputStream = new FileInputStream("students.dat");
        objectInputStream = new ObjectInputStream(fileInputStream);
        list = (List<Student>) objectInputStream.readObject();
    } catch (Exception e) {
        e.printStackTrace();
    }finally {
        if (fileInputStream != null) {
            fileInputStream.close();
        }
        if (objectInputStream != null) {
            objectInputStream.close();
        }
    }
    System.out.println("Result: ");
    list.forEach((item) -> {
        System.out.println(item);
    });
}