Java Object I/O学习

转载链接：http://jingbo2759.blog.163.com/blog/static/98375315200972943020873/

Serializable这个是标记性的接口...标记性就是说,这个接口没有提供任何的方法.所以我们也不需要实现方法.但是如果某一个类需要被序列化,那么,他就必须实现这个接口...

import java.io.FileNotFoundException;import java.io.IOException;import java.io.Serializable;import java.io.FileOutputStream;import java.io.ObjectOutputStream;import java.io.FileInputStream;import java.io.ObjectInputStream;public class ObjectStreamTest{public static void main(String[] args){T t = new T();t.k = 15;try{FileOutputStream fos = new FileOutputStream("333.txt");ObjectOutputStream oos = new ObjectOutputStream(fos);oos.writeObject(t);fos.close();oos.close();} catch (FileNotFoundException e){e.printStackTrace();} catch (IOException e){e.printStackTrace();}try{FileInputStream fis = new FileInputStream("333.txt");ObjectInputStream ois = new ObjectInputStream(fis);T t2 = (T)ois.readObject();System.out.println(t2.i);System.out.println(t2.k);System.out.println(t2.s);System.out.println(t2.j);} catch (FileNotFoundException e){e.printStackTrace();} catch (IOException e){e.printStackTrace();} catch (ClassNotFoundException e){e.printStackTrace();}}}class T implements Serializable{int i = 20;short j = 10;String s = "hello";int k = 100;/*一般可不用重写，定制串行化时需要重写 这两个方法，这两个方法应该同时对应出现private void writeObject(ObjectOutputStream out) throws IOException{}private void readObject(ObjectInputStream in) throws IOException{}*/}