diff --git a/assignment-02/H071191022/DataSource.java b/assignment-02/H071191022/DataSource.java
new file mode 100644
index 0000000..fc4162c
--- /dev/null
+++ b/assignment-02/H071191022/DataSource.java
@@ -0,0 +1,77 @@
+import java.io.*;
+ import java.util.HashMap;
+ import java.util.ArrayList;
+ import java.util.Arrays;
+
+ class DataSource {
+     static DataSource instance = null;
+     private HashMap<String, User> userMap = new HashMap<>();
+     private HashMap<Integer, UserDetail> userDetailMap = new HashMap<>();
+
+     private DataSource() {
+         putUserDetail();
+         putUser();
+     }
+
+     static public DataSource getInstance() {
+         if (instance == null)
+             instance = new DataSource();
+         return instance;
+     }
+
+     private void putUserDetail() {
+         BufferedReader br = null;
+         try {
+             br = new BufferedReader(new FileReader("UserDetail.txt"));
+             String s = "";
+             while ((s = br.readLine()) != null) {
+                 ArrayList<String> sList = new ArrayList<String>(Arrays.asList(s.split(";")));
+                 UserDetail userDetail = new UserDetail(Integer.valueOf(sList.get(0)), sList.get(1), sList.get(2),
+                         sList.get(3));
+                 userDetailMap.put(Integer.valueOf(sList.get(0)), userDetail);
+             }
+         } catch (IOException e) {
+             System.out.println(e.getMessage());
+         } finally {
+             try {
+                 if (br != null) {
+                     br.close();
+                 }
+             } catch (IOException e) {
+                 System.out.println(e);
+             }
+         }
+     }
+
+     private void putUser() {
+         BufferedReader br = null;
+         try {
+             br = new BufferedReader(new FileReader("User.txt"));
+             String s;
+             while ((s = br.readLine()) != null) {
+                 ArrayList<String> sList = new ArrayList<String>(Arrays.asList(s.split(";")));
+                 User user = new User(Integer.valueOf(sList.get(0)), sList.get(1), sList.get(2),
+                         userDetailMap.get(Integer.valueOf(sList.get(0))));
+                 userMap.put(sList.get(1), user);
+             }
+         } catch (IOException e) {
+             System.out.println(e.getMessage());
+         } finally {
+             try {
+                 if (br != null) {
+                     br.close();
+                 }
+             } catch (IOException e) {
+                 System.out.println(e);
+             }
+         }
+     }
+
+     public User getUser(String key) {
+         return userMap.get(key);
+     }
+
+     public UserDetail getUserDetail(Integer key) {
+         return userDetailMap.get(key);
+     }
+ } 
diff --git a/assignment-02/H071191022/Login.java b/assignment-02/H071191022/Login.java
new file mode 100644
index 0000000..e781c93
--- /dev/null
+++ b/assignment-02/H071191022/Login.java
@@ -0,0 +1,40 @@
+import java.util.NoSuchElementException;
+
+ class Login {
+     static Login instance = null;
+     private User user;
+     private UserDetail userDetail;
+     private DataSource dataSource;
+
+     private Login() {
+
+     }
+
+     static public Login getInstance() {
+         if (instance == null)
+             instance = new Login();
+         return instance;
+     }
+
+     public void auth(String name, String pass) throws NoSuchElementException {
+         dataSource = DataSource.getInstance();
+         try {
+             user = dataSource.getUser(name);
+             if (user.getPassword().equals(pass)) {
+                 userDetail = user.getUserDetail();
+             } else {
+                 System.out.println("wrong password");
+             }
+         } catch (Exception e) {
+             throw new NoSuchElementException("user not found: " + name);
+         }
+     }
+
+     public void status() {
+         if (userDetail != null) {
+             System.out.println(userDetail.getName());
+             System.out.println(userDetail.getEmail());
+             System.out.println(userDetail.getDateOfBirth());
+         }
+     }
+ } 
diff --git a/assignment-02/H071191022/Main.java b/assignment-02/H071191022/Main.java
new file mode 100644
index 0000000..79cb44c
--- /dev/null
+++ b/assignment-02/H071191022/Main.java
@@ -0,0 +1,7 @@
+class Main {
+    public static void main(String[] args) throws Exception {
+        Login login = Login.getInstance();
+        login.auth("naim", "Naim");
+        login.status();
+    }
+} 
diff --git a/assignment-02/H071191022/User.java b/assignment-02/H071191022/User.java
new file mode 100644
index 0000000..0565a75
--- /dev/null
+++ b/assignment-02/H071191022/User.java
@@ -0,0 +1,29 @@
+class User {
+    private Integer id;
+    private String userName;
+    private String password;
+    private UserDetail userDetail;
+
+    public User(Integer id, String userName, String password, UserDetail userDetail) {
+        this.id = id;
+        this.userName = userName;
+        this.password = password;
+        this.userDetail = userDetail;
+    }
+
+    public Integer getId() {
+        return id;
+    }
+
+    public String getUserName() {
+        return userName;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public UserDetail getUserDetail() {
+        return userDetail;
+    }
+} 
diff --git a/assignment-02/H071191022/UserDetail.java b/assignment-02/H071191022/UserDetail.java
new file mode 100644
index 0000000..612046a
--- /dev/null
+++ b/assignment-02/H071191022/UserDetail.java
@@ -0,0 +1,27 @@
+class UserDetail {
+
+    private int id;
+    private String name;
+    private String dateOfBirth;
+    private String email;
+
+    public UserDetail(int id,String name,String dateOfBirth, String email){
+        this.id = id;
+        this.name = name;
+        this.dateOfBirth = dateOfBirth;
+        this.email = email;
+    }
+    
+    public Integer getId(){
+        return id;
+    }
+    public String getName(){
+        return name;
+    }
+    public String getDateOfBirth(){
+        return dateOfBirth;
+    }
+    public String getEmail(){
+        return email;
+    }
+}
\ No newline at end of file
diff --git a/assignment-02/H071191022/user.txt b/assignment-02/H071191022/user.txt
new file mode 100644
index 0000000..70d291f
--- /dev/null
+++ b/assignment-02/H071191022/user.txt
@@ -0,0 +1,5 @@
+1;fitrh;12345678
+2;arzk;qwerty
+3;ken;asdf
+4;naim;Naim
+5;farhan;Parhan
\ No newline at end of file
diff --git a/assignment-02/H071191022/userdetail.txt b/assignment-02/H071191022/userdetail.txt
new file mode 100644
index 0000000..8a0deb0
--- /dev/null
+++ b/assignment-02/H071191022/userdetail.txt
@@ -0,0 +1,5 @@
+1;Muhammad Fitrah;04-09-1998;fitrahm17h@student.unhas.ac.id
+2;Muhammad Arizki;00-00-0000;arizkim17h@student.unhas.ac.id
+3;Kennedy;00-02-2000;kennedy17h@student.unhas.ac.id
+4;Muhammad Muflihun Naim;00-00-0000;naimmm17h@student.unhas.ac.id
+5;Farhan Ramdhani;00-00-0000;ramdhanif17h@student.unhas.ac.id