package main.java.com.sf.part05.oop_04; import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor; @Data @AllArgsConstructor @NoArgsConstructor public class User { private String id; private String name; private static int age; @Override public String toString() { return "User{" + "id='" + id + '\'' + ", name='" + name + '\'' + ", age='" + age + '\'' + '}'; } public static void main(String[] args) { User user = new User(); User user1 = new User(); user.setId("1"); user.setName("张三"); User.age = 111; System.out.println(User.age); System.out.println(user); System.out.println(user1); } }