import java.io.Serializable;
class Student implements Serializable
{
    int id;
    String name;
    int age;
    public Student(int id,String name,int age)
    {
       this.id=id;
       this.name=name;
       this.age=age;
    }
}
public class Seriazlization 
{
  public static void main(String[] args) throws Exception
  {
    Student stu1 = new Student(19,"zhangsan",25);
    Student stu2 = new Student(20,"lisi",24);
    FileOutputStream fos = new FileOutputStream("student.txt");
    ObjectOutputStream os = new ObjectOutputStream(fos);
    os.writeObject(stu1);
    os.writeObject(stu2);
    os.close();

    FileIntputStream fis = new FileIntputStream();
    ObjectIntputStream ois = new ObjectOutputStream(fis);
    stu1 =(Student)ois.readObject();
    stu2 =(Student)ois.readObject();
    ois.close();
  
    System.out.println("id" + stu1.id);
    System.out.println("name" + name.id);
    System.out.println("age" + age.id);

    System.out.println("id" + stu2.id);
    System.out.println("name" + stu2.name);
    System.out.println("age" + stu2.age);
   
  }
}