AtPay.java

public class AtPay implements Payment {
    @Override
    public void debitUser() {
        System.out.println("Money deducted from user using AtPay");
    }

    @Override
    public void checkUserBalance() {
        System.out.println("User balance checked using AtPay");
    }

    @Override
    public void creditUser() {
        System.out.println("Account credited using AtPay");
    }
}

ConsumeFacade.java

public class ConsumeFacade {
    public static void main(String[] args){
        MyFacade facade1 = new MyFacade();

        facade1.atChargeUser();
        facade1.mmChargeUser();
        facade1.MmPayUser();
        facade1.atPayUser();
    }
}

facade.java

public class MyFacade {
    private AtPay atPay;
    private MmPay mmPay;

    MyFacade(){
        atPay = new AtPay();
        mmPay = new MmPay();
    }

    public void MmPayUser(){
        mmPay.creditUser();
    }

    public void atPayUser(){
        atPay.creditUser();
    }

    public void atChargeUser(){
        atPay.debitUser();
        atPay.checkUserBalance();
    }

    public void mmChargeUser(){
        mmPay.debitUser();
        mmPay.checkUserBalance();
    }
}

MmPay.java

public class MmPay implements Payment {
    @Override
    public void debitUser() {
        System.out.println("Money deducted from user using MmPay");
    }

    @Override
    public void checkUserBalance() {
        System.out.println("User balance checked using MmPay");
    }

    @Override
    public void creditUser() {
        System.out.println("Account credited using MmPay");
    }
}

Payment.java

public interface Payment {
    void debitUser();
    void checkUserBalance();
    void creditUser();
}