Added Java lab programs

BankProject/BankDemo.java

@@ -0,0 +1,39 @@
+import accounts.Account;
+import java.util.Scanner;
+import services.Interest;
+
+public class BankDemo {
+
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+
+        System.out.print("Enter Account Number: ");
+        int accNo = sc.nextInt();
+        sc.nextLine();
+
+        System.out.print("Enter Customer Name: ");
+        String name = sc.nextLine();
+
+        System.out.print("Enter Initial Balance: ");
+        double balance = sc.nextDouble();
+
+        Account acc = new Account(accNo, name, balance);
+
+        System.out.print("Enter amount to deposit: ");
+        double dep = sc.nextDouble();
+        acc.deposit(dep);
+
+        System.out.print("Enter amount to withdraw: ");
+        double wd = sc.nextDouble();
+        acc.withdraw(wd);
+
+        Interest interest = new Interest();
+        double updatedBalance = interest.applyInterest(acc.getBalance());
+
+        System.out.println("\n--- Account Details After Interest ---");
+        acc.displayAccountDetails();
+        System.out.println("Balance after interest: " + updatedBalance);
+
+        sc.close();
+    }
+}

BankProject/accounts/Account.java

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+package accounts;
+
+public class Account {
+
+    private int accountNumber;
+    private String customerName;
+    private double balance;
+
+    public Account(int accountNumber, String customerName, double balance) {
+        this.accountNumber = accountNumber;
+        this.customerName = customerName;
+        this.balance = balance;
+    }
+
+    public void deposit(double amount) {
+        balance += amount;
+        System.out.println("Amount deposited: " + amount);
+    }
+
+    public void withdraw(double amount) {
+        if (amount <= balance) {
+            balance -= amount;
+            System.out.println("Amount withdrawn: " + amount);
+        } else {
+            System.out.println("Insufficient balance!");
+        }
+    }
+
+    public double getBalance() {
+        return balance;
+    }
+
+    public void displayAccountDetails() {
+        System.out.println("Account Number: " + accountNumber);
+        System.out.println("Customer Name: " + customerName);
+        System.out.println("Balance: " + balance);
+    }
+}

BankProject/services/Interest.java

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+package services;
+
+public class Interest {
+
+    private static final double RATE = 0.05; // 5% interest
+
+    public double applyInterest(double balance) {
+        return balance + (balance * RATE);
+    }
+}