public static void main(String[] args) throws FileNotFoundException, IOException, ClassNotFoundException {        writerObj();        readerObj();    }    private static void readerObj() throws IOException, ClassNotFoundException {        ObjectInputStream ois=new ObjectInputStream(new FileInputStream("obj.object"));        person p=(person) ois.readObject();        System.out.println(p.getName()+":"+p.getAge());    }    public static void writerObj() throws IOException, FileNotFoundException {        ObjectOutputStream oos=new ObjectOutputStream(new FileOutputStream("obj.object"));        oos.writeObject(new person("wangwu",22));        oos.close();    }

public class person implements Serializable/*标记接口*/{    /**     *      */    private static final long serialVersionUID = 9527;    public person(String name, int age) {        super();        this.name = name;        this.age = age;    }    private String name;    private int age;    public String getName() {        return name;    }    public int getAge() {        return age;    }}