Added a method to LoginGUI that calls the updateStayLoggdIn method in CreateUser if the stay logged in checkbox is ticked

src/main/java/LoginGUI.java

@@ -46,6 +46,15 @@ public class LoginGUI extends JFrame implements ActionListener {
         
         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
@@ -71,8 +80,8 @@ public class LoginGUI extends JFrame implements ActionListener {
     }
     
     private void updateStayLoggedIn(String username, boolean stayLoggedIn) {
-        // Update stayLoggedIn in the JSON file for the user
-  
+    // 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

user.json

@@ -16,15 +16,8 @@
   {
     "id": "685bc3a6-e706-4214-a5e1-8443d1a5258e",
     "userName": "Test User",
-    "password": "TestPasswort123",
-    "birthday": "01.01.2000",
-    "stayLoggedIn": false
-  },
-  {
-    "id": "503f2d6a-389c-4675-8044-3ec9ca73f1b5",
-    "userName": "Test User",
-    "password": "TestPasswort123",
+    "password": "Test",
     "birthday": "01.01.2000",
-    "stayLoggedIn": false
+    "stayLoggedIn": true
   }
 ]