AtmOperationImpl.java

import java.util.HashMap;
import java.util.Map;

public class AtmOperationImpl implements AtmOperationInterf {
    ATM atm=new ATM();
    Map<Double, String> ministmt = new HashMap<>();
    @Override
    public void viewBalance() {
        System.out.println("Available Balance is: " + atm.getBalance());
    }

    @Override
    public void withdrawAmount(double withdrawAmount) {
        if(withdrawAmount%100==0 || withdrawAmount%200==0 || withdrawAmount%500==0 || withdrawAmount%2000==0){
            if(atm.getBalance() > withdrawAmount){
                ministmt.put(withdrawAmount,"Amount Withdrawn");
                System.out.println("Collect the Cash " + withdrawAmount);
                atm.setBalance(atm.getBalance()-withdrawAmount);
                viewBalance();
            }else{
                System.out.println("Insufficient Balance!");
            }
        }else{
            System.out.println("Please enter the amount in Multiple of 100,200,500 or 2000!");
        }
    }

    @Override
    public void depositAmount(double depositAmount) {
        ministmt.put(depositAmount,"Amount Deposited");
        System.out.println(depositAmount+" Deposited Successfully!!");
        atm.setBalance(atm.getBalance() + depositAmount);
        viewBalance();
    }

    @Override
    public void viewMiniStatement() {
        for(Map.Entry<Double,String> m:ministmt.entrySet()){
            System.out.println(m.getKey()+" "+m.getValue());
        }
    }
}