java中transient关键字分析

public class User implements Serializable {
    /**
     * 用户ID
     */
    private Long id;
    /**
     * 年龄
     */
    private Integer age;
    /**
     * 用户姓名
     */
    private transient String name;
    public Long getId() {
        return id;
    }
    public void setId(Long id) {
        this.id = id;
    }
    public Integer getAge() {
        return age;
    }
    public void setAge(Integer age) {
        this.age = age;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", age=" + age +
                ", name='" + name + '\'' +
                '}';
    }
}

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
public class UserTest {
    public static void main(String[] args) {
        User liSi = new User();
        liSi.setId(1000000001L);
        liSi.setAge(18);
        liSi.setName("liSi");
        System.out.println(liSi);
        try (ObjectOutputStream outputStream = new ObjectOutputStream(new FileOutputStream("liSi.txt"))) {
            outputStream.writeObject(liSi);
        } catch (Exception ignore) {}
        try (ObjectInputStream inputStream = new ObjectInputStream(new FileInputStream("liSi.txt"))) {
            liSi = (User) inputStream.readObject();
        } catch (Exception ignore) {}
        System.out.println(liSi);
    }
}