bankSystem.java

import java.util.Scanner;
class Main{

	public static void main(String args[]){
		Scanner input = new Scanner(System.in);
		System.out.println("Welcome to my bank lol :D\n1.balance\n2.deposit\n3.withdraw");
		System.out.print("enter number: ");
		int userInput = input.nextInt();
		Person c1 = new Person("a", 1000);
		userInput(userInput, c1, input);
	}


	public static void userInput(int user, Person person, Scanner input){
		if(user <= 3 && user > 0 ){
			switch(user){
				case 1:
					person.showBalance();
					break;
				case 2:
					System.out.print("enter number to deposit: ");
					int enterNumber = input.nextInt();
					if(enterNumber > 0){
						person.addBalance(enterNumber);
						person.showBalance();
					}
					break;
				case 3:
					System.out.print("enter number to withdraw: ");
					int sumToWithDraw = input.nextInt();
					if(sumToWithDraw > 0) person.withDraw(sumToWithDraw);
					break;
			}
		}else{
			System.out.println("wrong number");
			return;
		}
	}
}


class Person{
	private String name;
	private int balance;



	public Person(String name, int balance){
		this.name = name;
		this.balance = balance;
	}


	public void showBalance(){
		System.out.println("your current balance: " + balance + "$");
	}


	public void addBalance(int add){
		balance += add;
		System.out.println(add + "$ was added to your balance");
		
	}


	public void withDraw(int withDraw){
		if(balance - withDraw < 0){
			System.out.println("not enought money on balance");
		}else{
			balance -= withDraw;
			System.out.println(withDraw + "$ was withdrawed");
	
		}
	}

}