下面是从对象流中读取对象,请将程序补充完整。 import java.util.*; import java.io.*; public class UnSerializaDate { Date d=null; UnSerializaDate() { try{ FilelnputStream f=new FileInputStream('date.ser'); ObjectlnputStream s=new Obi ectInput Stream( f); 【 】 f.close(); } catch(Exception e) { e.printStackTrace0; } public static void main(String args[]){ UnSerializaDate a-new UnSerializaDate(); System. out.println('The date read is:'+a.d.toString0);