1 import java.io.*; 2  3 public class Test { 4  5     public static void main(String[] args) { 6          7         File f = new File("a.txt"); 8         try { 9             if(!f.exists())10                 f.createNewFile();11         } catch (IOException e1) {12             e1.printStackTrace();13         }14         15         try {16             ObjectOutputStream oos = new ObjectOutputStream(new BufferedOutputStream(new FileOutputStream("a.txt")));17             Employe em = new Employe("xiaoming","123");18             oos.writeObject(em);19             oos.close();20             21             ObjectInputStream ois = new ObjectInputStream(new BufferedInputStream(new FileInputStream("a.txt")));22             em = (Employe)ois.readObject();23             System.out.println(em.name);24             25         } catch (FileNotFoundException e) {26             e.printStackTrace();27         } catch (IOException e) {28             e.printStackTrace();29         } catch (ClassNotFoundException e) {30             e.printStackTrace();31         }        32     }33 }34 35 class Employe implements Serializable {             //对象输出流的对象所对应的类应该实现Serializable接口36     String name;37     String id;38     39     Employe(String name,String id){40         this.name = name;41         this.id = id;    42     }    43 }