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package ObjectDemo;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

import java.io.Serializable;

/**

*

* @author CongThanh

*/

public class ReadWriteObject {

public static void main(String[] args) {

MyStudent myStudent = new MyStudent("Nguyễn Công Thành", 22 ); // tao doi tuong myStudent

//Ghi Object vao file

try { // dat try cacth de tranh ngoai le khi tao va viet File

FileOutputStream f = new FileOutputStream("student.dat"); // tao file f tro den student.dat

ObjectOutputStream oStream = new ObjectOutputStream(f); // dung de ghi theo Object vao file f

oStream.writeObject(myStudent); // ghi MyStudent theo kieu Object vao file

oStream.close();

} catch (IOException e) {

System.out.println("Error Write file");

}

//Doc Object tu file

MyStudent ms = null;

try { // dat try cacth de tranh ngoai le khi tao va doc File

FileInputStream f = new FileInputStream("student.dat"); // tao file f tro den student.dat

ObjectInputStream inStream = new ObjectInputStream(f); // dung de doc theo Object vao file f

// dung inStream doc theo Object, ep kieu tra ve la MyStudent

ms = (MyStudent) inStream.readObject();

inStream.close();

} catch (ClassNotFoundException e) {

System.out.println("Class not found");

} catch (IOException e) {

System.out.println("Error Read file");

}

// Xuat KQ

System.out.println("My name is " + ms.name + ". I am " + ms.age + " years old");

}

}

class MyStudent implements Serializable {

String name;

int age;

public MyStudent(String name, int age) {

this.name = name;

this.age = age;

}

public String getName() {

return name;

}

public int getAge() {

return age;

}

}