Java I/O的笔记（5）

Object 流

直接将Object写入或者读出

 

   1:  import java.io.*;

   2:   

   3:  public class TestObjectIO {

   4:      public static void main(String args[]) throws Exception {

   5:          T t = new T();

   6:          t.k = 8;

   7:          FileOutputStream fos = new FileOutputStream("d:/share/java/io/testobjectio.dat");

   8:          ObjectOutputStream oos = new ObjectOutputStream(fos);

   9:        

oos.writeObject(t);

  10:          oos.flush();

  11:          oos.close();

  12:          

  13:          FileInputStream fis = new FileInputStream("d:/share/java/io/testobjectio.dat");

  14:          ObjectInputStream ois = new ObjectInputStream(fis);

  15:          T tReaded = (T)ois.readObject();

  16:          System.out.println(tReaded.i + " " + tReaded.j + " " + tReaded.d + " " + tReaded.k);

  17:          

  18:      }

  19:  }

  20:   

  21:  class T 

  22:      

implements Serializable // Serializable为标记型接口，因为没有定义的方法，标记这个类可以序列化。

  23:  {

  24:      int i = 10;

  25:      int j = 9;

  26:      double d = 2.3;

  27:      

transient

 int k = 15;   //相当于K是透明的，在序列化的时候不予考虑。

  28:  }

 

Externalizable接口：是Serializable的子接口。定义了2个方法。

未完待续…