对象序列化流和反序列化流

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

       writeObject();

       readObject();

    }

    
    private static void readObject() throws IOException, ClassNotFoundException {
        ObjectInputStream ois=new ObjectInputStream(new FileInputStream("11.txt"));
        Object obj = ois.readObject();
        Tetcher s= (Tetcher) obj;
        System.out.println(s.getName()+","+s.getAge());
        ois.close();
    }

    
    private static void writeObject() throws IOException {
        ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("11.txt"));
        Tetcher s = new Tetcher("张三", 30);