java深拷贝和浅拷贝

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Dept implements Cloneable{
    private int id;
    private String name;

    @Override
    protected Object clone() throws CloneNotSupportedException {
        return super.clone();
    }
}

@Data
@AllArgsConstructor
@NoArgsConstructor
public class User implements Cloneable {
    private int id;
    private String name;
    private Dept dept;
    @Override
    protected Object clone() throws CloneNotSupportedException {
        return super.clone();
    }
}

    public static void main(String[] args) throws Exception{
        Dept dept = new Dept(1, "事业部");
        User user = new User(1, "张三", dept);
        //浅克隆
        User userCopy01 = (User) user.clone();
        System.out.println(user);
        dept.setId(2);
        System.out.println(userCopy01);
    }

修改部门id,浅拷贝出来的对象里面的值会发生变化

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Dept implements Cloneable{
    private int id;
    private String name;

    @Override
    protected Object clone() throws CloneNotSupportedException {
        return super.clone();
    }
}

@Data
@AllArgsConstructor
@NoArgsConstructor
public class User implements Cloneable {
    private int id;
    private String name;
    private Dept dept;

    @Override
    protected Object clone() throws CloneNotSupportedException {
        User user = (User) super.clone();
        Dept dept = (Dept) user.getDept().clone();
        user.setDept(dept);
        return user;
    }
}

    public static void main(String[] args) throws Exception{
        Dept dept = new Dept(1, "事业部");
        User user = new User(1, "张三", dept);
        //浅克隆
        User userCopy01 = (User) user.clone();
        System.out.println(user);
        dept.setId(2);
        System.out.println("--------" + userCopy01);
    }