ObjectDemo.java

import java.io.*;

class Student implements Serializable
{
 private int rollno;
 private String name;
 private float avg;
 private String dept;
 public static int Data=10;
 public transient int t;
 
 public Student()
 {
 
 }
 public Student(int r,String n,float a,String d)
 {
 rollno=r;
 name=n;
 avg=a;
 dept=d;
 Data=500;
 t=500;
 }
 
 public String toString()
 {
 return "\nStudent Details\n"+
 "\nRoll "+rollno+
 "\nName "+name+
 "\nAverage "+avg+
 "\nDept "+dept+
 "\nData "+Data+
 "\nTransient "+t+"\n";
 }
 
}

public class ObjectDemo 
{
 /* public static void main(String[] args) throws Exception
 {
 FileOutputStream fos=new FileOutputStream("Student3.txt");
 ObjectOutputStream oos=new ObjectOutputStream(fos);
 
 Student s=new Student(10,"John",89.9f,"CSE");
 
 oos.writeObject(s);
 
 fos.close();
 oos.close();
 
 }
} */
 
 public static void main(String[] args) throws Exception
 {
 FileInputStream fis=new FileInputStream("Student3.txt");
 ObjectInputStream ois=new ObjectInputStream(fis);
 
 Student s=(Student)ois.readObject();
 
 System.out.println(s);
 
 fis.close();
 ois.close();
 
 }
}