java语言编程IO流之对象序列化和ObjectInputStream与ObjectOutputStream

import java.io.*;

public class TestObjectStream { public static void main(String[] args) {  T t = new T();  t.name = "jay chou";  FileOutputStream fos = null;  ObjectOutputStream oos = null;  FileInputStream fis = null;  ObjectInputStream ois = null;  try {    fos= new FileOutputStream("D:\\bak\\test.dat");    oos = new ObjectOutputStream(fos);    oos.writeObject(t);    oos.writeDouble(0.1);    oos.flush();//不加这一句，有可能出现异常java.io.EOFException        fis = new FileInputStream("D:\\bak\\test.dat");    ois = new ObjectInputStream(fis);    T tt = (T)ois.readObject();    double d = ois.readDouble();    System.out.println(tt);    System.out.println(d);  } catch (IOException e) {    e.printStackTrace();    }catch (ClassNotFoundException e) {    e.printStackTrace();   } finally {   try {     ois.close();     fis.close();     oos.close();     fos.close();    } catch (IOException e) {     e.printStackTrace();    }       }  }}

class T implements Serializable {//必须实现该接口，才可使用户自定义类可以序列化 String name = "jay"; transient int i = 7; long t = 10L; double d = Math.random(); char c = 'a';  public String toString() {  return ("name " + name + " i： " + i + " t：" + t + " d： " + d + " c： " + c); }}/*D:\java\io>javac TestObjectStream.java

D:\java\io>java TestObjectStreamname jay chou i： 7 t：10 d： 0.7328874131779102 c： a0.1

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D:\java\io>javac TestObjectStream.java

D:\java\io>java TestObjectStreamname jay chou i： 0 t：10 d： 0.43315260736775785 c： a0.1

*/