[填空題] 下面程序段是從對(duì)象流中讀取對(duì)象，請(qǐng)將程序補(bǔ)充完整。

import java. util.*；

import java. io.*;

public class UnSerializaDate

Date d=null;

UnSerializaDate()

try

FileInputStream f=new FileInputStream("date. ser");

ObjectInputStream s=new ObjectInputStream(f);

【13】

f. close();

catch(Exception e)

e. printStackTrace();

public static void main(String args[])

UnSerializaDate a=new UnSerializaDate();

System. out. println("The date read is:" +a.d.toString());

d=(Date)s. readObject()；