![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
从对象流中读取对象,请在画线处加入代码完成此程序【 】。 import java.util.*; import java.io.*; public class UnSerializeDate { Date d = null; UnSerializeDate() { try{ FileInputStream f = new FileInputStream('data.ser'); ______; d = (Date) s.readObject(); f.close(); } catch(Exception e) { e.printStackTrace(); } } public static void main(String args[ ]) { UnSerializeDate a = new UnSerializeDate(); System.out.println('The date read is :'+a.d.toString()); } }