BankingProgram.java

package LearningWithExercises;

import java.util.Scanner;


public class BankingProgram {

    static Scanner scanner = new Scanner(System.in);
    public  static void main(String [] args){
            //  JAVA BANKING PROGRAM FOR BEGINNERS


        double balance=0;
        boolean isRunning= true;
        int choice;





        while(isRunning){

            System.out.println("****************************");
            System.out.println("BANKING PROGRAM ");
            System.out.println("****************************");
            System.out.println("1. Show balance\n" +
                    "2. Deposit\n" +
                    "3. Withdraw\n" +
                    "4. Exit");
            System.out.println("****************************");


            System.out.println("Enter your choice(1-4)");
            choice= scanner.nextInt();

            switch(choice){
                case 1-> showBalance(balance);
                case 2-> balance+=deposit();
                case 3-> balance-=withdraw(balance);
                case 4-> isRunning=false;
            }

        }
        System.out.println("****************************");
        System.out.println("Thank you have a nice day!");



scanner.close();


    }
    static void showBalance(double balance){
        System.out.println("****************************");
        System.out.printf("$%.2f\n",balance);
    }
    static  double deposit(){
        double  amount;
        System.out.print("Enter the amount to be deposited");
        amount=scanner.nextDouble();
       if (amount<0){
            System.out.println("Amount cant be negative");
            return 0;
        }
        else {
            return amount;
        }

    }
    static  double withdraw (double balance){
        double amount;
        System.out.print("enter the amount to be withdrawn: ");
        amount= scanner.nextDouble();
        if (amount>balance){
            System.out.println("INSUFFICIENT FUNDS");
            return 0;
        } else if (amount<0) {
            System.out.println("Amount  can't be negative");
            return 0;
        }else{
            return amount;
        }

    }

}