Question

Problem 5: (10 pts) Modify the patient class with two overloaded methods to display a bill for astandard visit based on age. In the first method do not use any parameters to pass in data. If the patient is over 65, then a standard visit is $75. If the patient is under 65, then the standard doctors office visit is $125. Build a second method where you pass in a discount rate. If the patient is over 65, then apply the discount rate to a standard rate of $125. Create a main method that calls both of these methods and displays the results

Answer 1

Hi,

Hope you are doing fine. I have coded the above question in java keeping all the conditions and requirements in mind. The line by line explanation is provided using comments that have been highlighted in bold. Before you look at the code, here are a few thing for you to take a special note of:

• As per the question, the conditions are based on the variable "age" but there is no pinpoint description of age. It is nowhere given if age is a global variable or is an input variable giiven by user or a class instance variable or a static class variable. So, in order to solve the question, I have assumed age to be an instance variable of class patient.
• The else condition for displayBill() with discount as parameter is not given. I have taken iit the same as the other overloaded method, you may change/remove it as per your requirement.
• The logic for discount is not clearly given. It is just mentioned that "apply the discount rate to a standard rate of $125". Apply could mean either subtraction or percentage. Since they have mentioned discount rate annd not % i have subtracted it directly from 125. In case, if you want to consider discount as percentage then replace:

System.out.println("Standard vist after discount is $"+(125-discount)); with System.out.println("Standard vist after discount is $"+(125-(125*discount/100)));

Program:

//class patient
public class patient {
   //declaring class attribute age of type int
   int age;
  
   //non parameterized constructor that is initialized when an object for patient is created
   public patient(int age) {
       this.age = age;
   }

   //displayBill() is method to display bill for a standard visit without any input parameters
   public void displayBill()
   {
       //if age is greater than 65
       if (age>65)
       {
           System.out.println("Standard visit is $75");
       }
       else
           System.out.println("Standard visit is $125");
   }
  
   //Overloading the displayBill() method by changing its signature i.e passing a parameter discount of type int
   public void displayBill(int discount)
   {
       //if age is greater than 65
       if(age>65)
           //Here we are subtracting the discount rate from 125
           System.out.println("Standard vist after discount is $"+(125-discount));
       else
           System.out.println("Standard visit is $125");
   }
  
   //main method
   public static void main(String[] args) {
       // TODO Auto-generated method stub
       //creating object p for class patient with age 75
       patient p=new patient(75);
       //calling displayBill() method without parameter
       p.displayBill();
       //calling displayBill() method with parameter
       p.displayBill(100);
   }
}

Executable code snippet:

Output: