serializedemo.java

Java面向对象编程(随书配套源代码) 阐述了面向对象编程的思想

package chapter13;
import java.io.*;
import java.util.*;
public class SerializeDemo implements Serializable 
{
	Date date = new Date();
	String strUser;
	transient String strPass;
    public SerializeDemo(String name, String pwd) 
	{
		strUser = name;
		strPass = pwd;
	}
	public String toString() 
	{
		String pwd = (strPass == null) ? "未知" : strPass;
		return "登录信息: \n"+"用户名: "+strUser + "\n日期: "+date.toLocaleString()+"\n密码: "+pwd;
	}
	public static void main(String[] args) throws IOException, ClassNotFoundException 
	{
		SerializeDemo sd=new SerializeDemo("liuzc","liuzc518");
		System.out.println(sd);
		ObjectOutputStream oosLogin=new ObjectOutputStream( new FileOutputStream("user.dat"));
		oosLogin.writeObject(sd);
		oosLogin.close();
		long lngTime= System.currentTimeMillis()+5000;
		while(System.currentTimeMillis()<lngTime);
			ObjectInputStream oisLogin=new ObjectInputStream( new FileInputStream("user.dat"));
		System.out.println( "重新读入登录信息......\n"+(new Date()).toLocaleString());
		sd=(SerializeDemo)oisLogin.readObject();
		System.out.println(sd); 
	}
}