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+#import "/template.typ": *
+#show: A => apply(A)
+#set raw(lang: "java-new")
+#set par(leading: 0.5em)
+
+#assignment(12, block: true)[
+  Write a program wherein design a class to represent a bank account. Include the following:
+  #pad(left: 1em)[
+  / Fields :
+    - Name of the depositor
+    - Address of the depositor
+    - Account number
+    - Balance amount in the account
+  / Methods :
+    - To assign initial values
+    - To deposit an amount
+    - To withdraw an amount after checking balance
+    - To display the name, address and balance of a customer.
+  ]
+  From `main()` create object and call these methods.
+]
+
+#scos("BankAccountExample")
+
+=== Discussion
+
+#skind[Classes, interfaces and methods used from Java standard library]
+
+- `java.util.ArrayList<E>` class provides a dynamic array implementation, allowing for the flexible storage and manipulation of elements in a resizable list.
+  - `boolean add(E)`: Adds the specified element to the end of the list.
+  - `E remove(int)`: Removes the element at the specified position in the list.
+  - `int size()`: Returns the number of elements in the list.
+- `java.util.Scanner` class:
+  - `String nextLine()`: Scan a line of text from the input stream.
+  - `long nextLong()`: Scan a `long` value from the input stream.
+  - `double nextDouble()`: Scan a `double` value from the input stream.
+
+#skind[Classes and methods implemented in the program]
+
+- The `BankAccount` class represents a bank account with details like name, address, account number, and balance.
+  - Constructor `BankAccount(String, String, long, double)`: Create a bank account with the given details.
+  - `static BankAccount takeInput(Scanner)`: Takes input for a bank account from the user.
+  - `long getAccountNo()`: Returns the account number of the bank account.
+  - `double getBalance()`: Returns the balance of the bank account.
+  - `boolean equals(Object)`: Compares bank accounts based on account number.
+  - `void deposit(double)`: Deposits money into the account.
+  - `static String formatBalance(double)`: Formats a balance value for display.
+  - `void withdraw(double) throws Exception`: Withdraws money from the account, handling exceptions.
+  - `void display()`: Displays the details of the bank account.
+  - `static BankAccount lookup(ArrayList<BankAccount>, long)`: Looks up a bank account in the list based on account number.
+
+- The `BankAccountExample` class contains the main program for interacting with bank accounts through a menu:
+  - `static void menu()`: Displays a menu of operations.
+  - `static BankAccount findAccount(Scanner, ArrayList<BankAccount>)`: Finds a bank account based on user input.
+  - `public static void main(String[])`: Implements a menu-driven program for managing bank accounts, allowing creation, display, deposit, withdrawal, and closure of accounts.
+  
+#signature()