对象串行化

对象串行化

package test;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.Serializable;
import java.net.InetAddress;
import java.net.Socket;;


class Student implements Serializable {
	
	private String name;
	private int age;
	private int grade;
	
	public Student(String name, int age, int grade) {
		this.name = name;
		this.age = age;
		this.grade = grade;
	}
	public String toString() {
		return name + " " + age + " " + grade;
	}
}

public class Hello{
	

	public static void main(String[] args) {
		
		
		Student s1 = new Student("John", 18, 5);
		System.out.println(s1);
		try {
			ObjectOutputStream out = new ObjectOutputStream(
					new FileOutputStream("obj.dat"));
			out.writeObject(s1);
			out.close();
			
			ObjectInputStream in = new ObjectInputStream(
					new FileInputStream("obj.dat"));
			Student s2 = (Student)in.readObject();
			System.out.println(s2);
			in.close();
			
			System.out.println(s1 == s2);
		}catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}