ATM program Java

In Java, we can create an ATM program for representing ATM transection. In the ATM program, the user has to select an option from the options displayed on the screen. The options are related to withdraw the money, deposit the money, check the balance, and exit.

To withdraw the money, we simply get the withdrawal amount from the user and remove that amount from the total balance and print the successful message.

To deposit the money, we simply get the deposit amount from the user, add it to the total balance and print the successful message.

To check balance, we simply print the total balance of the user.

We use the exit(0) method to exit from the current Transaction mode and return the user to the home page or initial screen.

ATMExample.java

//import required classes and packages 
import java.util.Scanner;

//create ATMExample class to implement the ATM functionality
public class ATMExample
{
	//main method starts 
    public static void main(String args[] )
    {
		//declare and initialize balance, withdraw, and deposit
        int balance = 100000, withdraw, deposit;
		
		//create scanner class object to get choice of user
        Scanner sc = new Scanner(System.in);
		
        while(true)
        {
            System.out.println("Automated Teller Machine");
            System.out.println("Choose 1 for Withdraw");
            System.out.println("Choose 2 for Deposit");
            System.out.println("Choose 3 for Check Balance");
            System.out.println("Choose 4 for EXIT");
            System.out.print("Choose the operation you want to perform:");
            
			//get choice from user
			int choice = sc.nextInt();
            switch(choice)
            {
                case 1:
		System.out.print("Enter money to be withdrawn:");
					
		//get the withdrawl money from user
		withdraw = sc.nextInt();
					
		//check whether the balance is greater than or equal to the withdrawal amount
		if(balance >= withdraw)
		{
			//remove the withdrawl amount from the total balance
			balance = balance - withdraw;
			System.out.println("Please collect your money");
		}
		else
		{
			//show custom error message 
			System.out.println("Insufficient Balance");
		}
		System.out.println("");
		break;
 
                case 2:
					
		System.out.print("Enter money to be deposited:");
					
		//get deposite amount from te user
		deposit = sc.nextInt();
					
		//add the deposit amount to the total balanace
		balance = balance + deposit;
		System.out.println("Your Money has been successfully depsited");
		System.out.println("");
		break;
 
                case 3:
		//displaying the total balance of the user
		System.out.println("Balance : "+balance);
		System.out.println("");
		break;
 
                case 4:
		//exit from the menu
		System.exit(0);
            }
        }
    }
}

Output: