Test.java

import java.util.*;
class Account {
    private int id = 0;
    private double balance = 500.0;
    private static double annualInterestRate = 4.0;
        public Account() 
    {  
    }

    public Account(int id, double balance) 
    {
        
        this.id = id;
        this.balance = balance;
    }

    public double getMonthlyInterest() 
    {
        return (balance*annualInterestRate)/1200;
    }

    public void withdraw(double amount) 
    {
       this.balance=this.balance-amount;
       System.out.println("current balance=Rs. "+this.balance);
    }

    public void deposit(double amount) 
    {
        this.balance=this.balance+amount;
        System.out.println("current balance=Rs. "+this.balance);
    }
}
public class Test
   {
       
    public static void main(String[] args) 
    {
        Scanner ob = new Scanner(System.in);
        System.out.println("enter id");
        int n=ob.nextInt();
        Account e = new Account(n,500);
        System.out.println("1.MONTHLY INTEREST ");
        System.out.println("2. WITHDRAW ");
        System.out.println("3. DEPOSIT ");
        System.out.println("ENTER CHOICE");
        int ch=ob.nextInt();
        switch(ch)
        {        
       case 1:
       System.out.println("Monthly interest=Rs. "+e.getMonthlyInterest());
       break;
       case 2:
       System.out.println("enter amount to withdraw");
       double w=ob.nextDouble();
       e.withdraw(w);
       break;
       case 3:
       System.out.println("enter amount to deposit");
       double d=ob.nextDouble();
       e.deposit(d);
       break;
       default:
       System.out.println("Wrong choice");
    }
}
}