Calculating NetRevenue with Taxes

Question

My code is saying my method cannot be applied to given types. Could someone help me? The code I have so far is:

https://code.sololearn.com/ce6ZC681er65/?ref=app

Answer 1

Guy Robbins
change your code for the following method to this ,

public void CalculateNetRevenue(){
int n = this.totalIncome;
int m = this.taxPercent;
this.netRevenue = n-n*m/100;
}

Your code requires you to pass two arguments for the above code as you have parameters specified for it.

Answer 2

import java.util.Scanner;
public class Main
{
public static void main(String[] args) {
Scanner read = new Scanner(System.in);
int totalIncome = read.nextInt();
int taxPercent = read.nextInt();

//creating an Income object
Income income = new Income();
income.totalIncome = totalIncome;
income.taxPercent = taxPercent;

income.CalculateNetRevenue(totalIncome, taxPercent);
System.out.println("Net revenue: " + income.getNetRevenue());
}
}
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class Income{
public int totalIncome;
public int taxPercent;
//the net revenue is private
private int netRevenue;

//complete setter method
public void CalculateNetRevenue(int totalIncome, int taxPercent){
this.netRevenue = this.totalIncome - (this.totalIncome*this.taxPercent)/100;
}

//complete getter method
public int getNetRevenue(){
return this.netRevenue;
}
}

Answer 3

I think on line 30 when you use division, it's giving you float or double, so you have to use type casting to get int

Answer 4

method is declaring as
public void CalculateNetRevenue(int n, int m){

but you call it without any arguments.
income.CalculateNetRevenue();

Answer 5

Thank you Abhay that worked. May I ask just to understand better why in this example I did not have to use parameters for my CalculateNetRevenue() method?

Answer 6

Guy Robbins
In the following piece of code ,
"""
income.totalIncome = totalIncome;
income.taxPercent = taxPercent;

income.CalculateNetRevenue();

"""

You are already assigning user input values (totalIncome and taxPercent) to class variables , so why would need parameters for a method that just won't do anything ?

See the following code ,
"""
public void CalculateNetRevenue(int n, int m){
n = totalIncome;
m = taxPercent;
"""

totalIncome and taxPercent are already assigned . Now what you think the above code is doing ? Even if you pass values to this method they won't affect the result at all. Our user input totalIncome will be assigned to variable m , so you see there is no need for those parameters !

let me know if still something doesn't makes sense.

Answer 7

Okay I think I am understanding a little bit more thank you for your feedback Abhay. I do appreciate it.

Answer 8

import java.util.Scanner;
public class Main
{
public static void main(String[] args) {
Scanner read = new Scanner(System.in);
int totalIncome = read.nextInt();
int taxPercent = read.nextInt();

//creating an Income object
Income income = new Income();
income.totalIncome = totalIncome;
income.taxPercent = taxPercent;

income.CalculateNetRevenue();
System.out.println("Net revenue: " + income.getNetRevenue());
}
}

class Income{
public int totalIncome;
public int taxPercent;
//the net revenue is private
//That is why we use a getter and setter method
private int netRevenue;

//complete setter method
public void CalculateNetRevenue(){
this.netRevenue = totalIncome-totalIncome*taxPercent/100;

}

//complete getter method
public int getNetRevenue(){
return netRevenue;

}
}