java序列化的一段代码

    package test.java; 
    import java.io.Serializable; 
    public class User implements Serializable{ 
        private int id; 
        public int getId() { 
            return id; 
        } 
        public void setId(int id) { 
            this.id = id; 
        } 
        public String getName() { 
            return name; 
        } 
        public void setName(String name) { 
            this.name = name; 
        } 
        public int getAge() { 
            return age; 
        } 
        public void setAge(int age) { 
            this.age = age; 
        } 
        private String name; 
        private int age;     
    }

    package test.java; 
     
    import java.io.File; 
    import java.io.FileInputStream; 
    import java.io.FileNotFoundException; 
    import java.io.FileOutputStream; 
    import java.io.IOException; 
    import java.io.ObjectInput; 
    import java.io.ObjectInputStream; 
    import java.io.ObjectOutput; 
    import java.io.ObjectOutputStream; 
     
    public class MySerialization {
        /**
         * @param args
         */ 
        public static void main(String[] args) { 
            String filePath="d:user.txt"; 
            User user=new User(); 
            user.setId(1); 
            user.setName("zhangsan"); 
            user.setAge(22); 
            writeUser(user, filePath); 
            User user1=readUser(filePath); 
            System.out.println(user1.getId()); 
            System.out.println(user1.getName()); 
            System.out.println(user1.getAge());     
        } 
         
        public static void writeUser(Object object,String filePath){ 
            ObjectOutputStream objectOutputStream=null; 
            try { 
                 
                objectOutputStream=new ObjectOutputStream(new FileOutputStream(new File(filePath))); 
                objectOutputStream.writeObject(object); 
            } catch (FileNotFoundException e) { 
                e.printStackTrace(); 
            } catch (IOException e) { 
                e.printStackTrace(); 
            }finally{ 
                    try { 
                        objectOutputStream.close(); 
                    } catch (IOException e) { 
                        e.printStackTrace(); 
                    } 
            } 
        } 
         
        public static User readUser(String filePath){ 
            ObjectInputStream objectInputStream=null; 
            User user=null; 
            try { 
                objectInputStream=new ObjectInputStream(new FileInputStream(new File(filePath))); 
                user=(User)objectInputStream.readObject(); 
            } catch (FileNotFoundException e) { 
                e.printStackTrace(); 
            } catch (IOException e) { 
                e.printStackTrace(); 
            } catch (ClassNotFoundException e) { 
                e.printStackTrace(); 
            }finally{ 
                try { 
                    objectInputStream.close(); 
                } catch (IOException e) { 
                    e.printStackTrace(); 
                } 
            } 
            return user;             
        }     
    }