diff --git a/src/main/java/CreateUser.java b/src/main/java/CreateUser.java
index 8e8f15f..c799654 100644
--- a/src/main/java/CreateUser.java
+++ b/src/main/java/CreateUser.java
@@ -17,6 +17,7 @@ class CreateUser {
     private String userName;
     private String password;
     private String birthday;
+    private boolean stayLoggedIn;
     
 
     // Constructor
@@ -59,6 +60,14 @@ class CreateUser {
         public void setBirthday(String birthday) {
         this.birthday = birthday;
         }
+        
+        public boolean isStayLoggedIn() {
+        return stayLoggedIn;
+        }
+
+        public void setStayLoggedIn(boolean stayLoggedIn) {
+        this.stayLoggedIn = stayLoggedIn;
+        }
 
     // Function to create user with validation
     public static CreateUser createUser(String id, String userName, String password, String birthday) {
@@ -101,12 +110,32 @@ class CreateUser {
         }
         return userList;
     }
+    
+ // Function to update stayLoggedIn variable in the JSON file
+    public static void updateStayLoggedIn(String filename, String username, boolean stayLoggedIn) {
+        List<CreateUser> userList = readUserListFromJsonFile(filename);
+
+        for (CreateUser user : userList) {
+            if (user.getUserName().equals(username)) {
+                user.setStayLoggedIn(stayLoggedIn);
+                break;
+            }
+        }
+
+        try (FileWriter fileWriter = new FileWriter(filename)) {
+            Gson gson = new GsonBuilder().setPrettyPrinting().create();
+            gson.toJson(userList, fileWriter);
+            System.out.println("StayLoggedIn updated in " + filename);
+        } catch (IOException e) {
+            System.out.println("Error occurred while updating StayLoggedIn in JSON file: " + e.getMessage());
+        }
+    }
 
     public static void main(String[] args) {
         try {
             // Example usage
         	UUID randomUUID = UUID.randomUUID();
-        	CreateUser user = createUser(randomUUID.toString(), "Another Test User", "TestPasswort123", "01.01.2000");
+        	CreateUser user = createUser(randomUUID.toString(), "Test User", "TestPasswort123", "01.01.2000");
 
             // Example of accessing properties
             System.out.println("UserID: " + user.getId());
@@ -117,6 +146,8 @@ class CreateUser {
 
             // Save user information to a JSON file
             user.saveToJsonFile("user.json");
+            
+            updateStayLoggedIn("user.json", "Test User", true);
         } catch (IllegalArgumentException e) {
             System.out.println("Error: " + e.getMessage());
         }
diff --git a/src/main/java/LoginGUI.java b/src/main/java/LoginGUI.java
new file mode 100644
index 0000000..675ffa5
--- /dev/null
+++ b/src/main/java/LoginGUI.java
@@ -0,0 +1,122 @@
+import javax.swing.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.util.List;
+import java.awt.event.KeyEvent;
+import java.awt.event.KeyListener;
+
+public class LoginGUI extends JFrame implements ActionListener {
+    private JTextField usernameField;
+    private JPasswordField passwordField;
+    private JButton loginButton;
+    private JCheckBox stayLoggedInCheckbox;
+
+    public LoginGUI() {
+        setTitle("Login");
+        setSize(300, 180);
+        setDefaultCloseOperation(EXIT_ON_CLOSE);
+        setLayout(null);
+
+        JLabel usernameLabel = new JLabel("Username:");
+        usernameLabel.setBounds(20, 20, 80, 25);
+        add(usernameLabel);
+
+        usernameField = new JTextField();
+        usernameField.setBounds(100, 20, 160, 25);
+        add(usernameField);
+        
+        JLabel passwordLabel = new JLabel("Password:");
+        passwordLabel.setBounds(20, 50, 80, 25);
+        add(passwordLabel);
+
+        passwordField = new JPasswordField();
+        passwordField.setBounds(100, 50, 160, 25);
+        add(passwordField);
+        
+        stayLoggedInCheckbox = new JCheckBox("Stay Logged In");
+        stayLoggedInCheckbox.setBounds(20, 80, 150, 25);
+        add(stayLoggedInCheckbox);
+        
+        loginButton = new JButton("Login");
+        loginButton.setBounds(100, 110, 100, 25);
+        loginButton.addActionListener(this);
+        add(loginButton);
+        
+        getRootPane().setDefaultButton(loginButton);
+        
+        passwordField.addKeyListener(new EnterKeyListener());
+        
+        stayLoggedInCheckbox.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                boolean stayLoggedIn = stayLoggedInCheckbox.isSelected();
+                String username = usernameField.getText();
+                updateStayLoggedIn(username, stayLoggedIn);
+            }
+        });
+        
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        if (e.getSource() == loginButton) {
+            login();
+        }
+    }
+
+    private void login() {
+        String username = usernameField.getText();
+        String password = new String(passwordField.getPassword());
+        boolean stayLoggedIn = stayLoggedInCheckbox.isSelected(); // Get checkbox state
+
+        if (authenticateUser(username, password)) {
+            JOptionPane.showMessageDialog(this, "Login successful!");
+            // Perform actions after successful login
+            
+            dispose();
+        } else {
+            JOptionPane.showMessageDialog(this, "Invalid username or password", "Login Error", JOptionPane.ERROR_MESSAGE);
+        }
+    }
+    
+    private void updateStayLoggedIn(String username, boolean stayLoggedIn) {
+    // Update stayLoggedIn in the JSON file for the user
+    CreateUser.updateStayLoggedIn("user.json", username, stayLoggedIn);
+    }
+    
+ // Function to authenticate the user by comparing the entered username and password with the saved user data
+    private boolean authenticateUser(String username, String password) {
+        List<CreateUser> userList = CreateUser.readUserListFromJsonFile("user.json");
+        if (userList != null) {
+            for (CreateUser user : userList) {
+            if (user.getUserName().equals(username) && user.getPassword().equals(password)) {
+            return true; //Success
+           }
+            }
+        }
+        return false; // Fail
+    }
+
+
+    private class EnterKeyListener implements KeyListener {
+        @Override
+        public void keyTyped(KeyEvent e) {}
+
+        @Override
+        public void keyPressed(KeyEvent e) {
+            if (e.getKeyCode() == KeyEvent.VK_ENTER) {
+                login();
+            }
+        }
+
+        @Override
+        public void keyReleased(KeyEvent e) {}
+    }
+    
+    public static void main(String[] args) {
+        SwingUtilities.invokeLater(() -> {
+            LoginGUI loginGUI = new LoginGUI();
+            loginGUI.setVisible(true);
+        });
+    }
+}
\ No newline at end of file
diff --git a/user.json b/user.json
index 0201a67..5437c96 100644
--- a/user.json
+++ b/user.json
@@ -1,14 +1,23 @@
 [
   {
-    "id": "961ca202-ecbd-4dfc-ac0b-28f367618aa1",
-    "userName": "asd",
-    "password": "123456",
-    "birthday": "1"
+    "id": "a2864d79-1079-4cbb-8d77-f5f84995580d",
+    "userName": "Another Test User",
+    "password": "TestPasswort123",
+    "birthday": "01.01.2000",
+    "stayLoggedIn": false
   },
   {
-    "id": "d563a466-753b-4a5e-8b6c-e7e4756c7397",
-    "userName": "asd1",
+    "id": "3690702d-9c7e-48fb-8a01-ef89b3b76268",
+    "userName": "TestUser2",
     "password": "123456",
-    "birthday": "1"
+    "birthday": "01.01.2000",
+    "stayLoggedIn": false
+  },
+  {
+    "id": "685bc3a6-e706-4214-a5e1-8443d1a5258e",
+    "userName": "Test User",
+    "password": "Test",
+    "birthday": "01.01.2000",
+    "stayLoggedIn": true
   }
 ]
\ No newline at end of file