java对象序列化 永久保存到硬盘

[java]代码库

import java.io.*;

public class SerializableDemo {
	public static void main(String args[]) throws IOException,
			ClassNotFoundException {
		Student stu = new Student(1564163, "xxx", 18, "CSD");
		FileOutputStream fo = new FileOutputStream("data.ser");
		// 保存对象的状态
		ObjectOutputStream so = new ObjectOutputStream(fo);
		try {
			so.writeObject(stu);
			so.close();
		} catch (IOException e) {
			System.out.println(e);
		}
		FileInputStream fi = new FileInputStream("data.ser");
		ObjectInputStream si = new ObjectInputStream(fi);
		// 恢复对象的状态
		try {
			stu = (Student) si.readObject();
			si.close();
		} catch (IOException e) {
			System.out.println(e);
		}

	}
}

class Student implements Serializable {
	int id; // 学号
	String name; // 姓名
	int age; // 年龄
	String department; // 系别

	public Student(int id, String name, int age, String department) {
		this.id = id;
		this.name = name;
		this.age = age;
		this.department = department;
	}
}