Update README.md

README.md

@@ -1,2 +1,34 @@
-# src
-#log
+@startuml
+
+class User {
+    - username: String
+    - email: String
+    - age: int
+    - gender: String
+    + User(username: String, email: String, age: int, gender: String)
+    + getUsername(): String
+    + getEmail(): String
+    + getAge(): int
+    + getGender(): String
+    + setUsername(username: String): void
+    + setEmail(email: String): void
+    + setAge(age: int): void
+    + setGender(gender: String): void
+    + toString(): String
+}
+
+class UserManager {
+    - userList: ArrayList<User>
+    - FILE_NAME: String
+    + UserManager()
+    + readUsersFromFile(): ArrayList<User>
+    + writeUsersToFile(): void
+    + addUser(user: User): void
+    + findUserByUsername(username: String): User
+    + removeUser(username: String): boolean
+    + modifyUserInfo(username: String, newEmail: String, newAge: int, newGender: String): boolean
+}
+
+User --* UserManager
+
+@enduml