Use generic ArrayList<AccountData> for type safety

README.md

@@ -4,9 +4,9 @@ This repository contains an ATM Management System project implemented in Java.
 
 ## Instructions
 
-To run the program, follow these steps:
+To run the program, follow these steps: --
 
-1. Run the `AtmMainDriver` file.
+1. Run the `AtmMainDriver` file. 
 2. No additional packages need to be downloaded.
 3. The username and password for both "Admin" and "User" are as follows:
    - Username: zahid

atm/src/atm/Admin.java

@@ -22,7 +22,8 @@ public class Admin extends JFrame implements ActionListener
     JButton addAccount,deleteAccount,editAccount,saveToFile,logOut;  
     JLabel atmLab;
     Container con;
-    ArrayList customerlist;
+    ArrayList<AccountData> customerlist;
+	Admin adm = new Admin();
     String s1,s2,s3;
     Admin()
     {

atm/src/atm/AfterLogin.java

@@ -11,15 +11,15 @@ public class AfterLogin extends JFrame implements ActionListener
     JButton equiryBtn,withdrawBtn,logoutBtn,transferBtn;  
     JLabel atmLab;
     Container con;
-    ArrayList customerlist;
-    Admin adm = new Admin();
+    ArrayList<AccountData> customerlist;
     String s1;
 
     AfterLogin()
     {
 
         super("Transaction");
         customerlist=new ArrayList();
+		loadPersons();
 
         con = this.getContentPane();
         con.setLayout(null);