Can you tell me if I'm doing this right so far?

in my java 120 class my teacher wants us to write a program here it is Assignment Using Methods

Design and write a Java program that calculates and displays the results of a sales transaction. Two classes are to be defined as follows:

Class Name: Sales

Input Variables: quantity – an integer value price – a floating point value commissionRate – a double value (example: 8.5%) (to be entered as percent discountPerCent – a double value (example: 6.5%) values)

Processing: There are four input values as defined above. These variables are to be declared inside main().The main( ) method of this class should accept the quantity, price, commission rate, and discount percent from the keyboard (echo the inputs back to the screen) and call the appropriate functions described below to calculate the final sales transaction amount. main() should also display the initial sales amount.

Methods: saleAmt() – The quantity and price are passed to this method. It returns the sale amount to the calling method.

netSale() – The sale amount, commission amount, and discount amount are passed to this method. The commission amount should be added to the sale amount and the discount amount should be subtracted. Return the net sale back to the calling method.

finalSale() – This method displays the net sale amount, tax and final sales amount. **You determine appropriate argument passing and return value.

this is what I've written so far Idk if I'm doing it right.

import java.util.Scanner;
public class Sales{

public static void main(String[] args)
   {
      int quantity;
      float price;
      double commissionRate;
      double discountPerCent;
      Scanner Input = new Scanner(System.in);
      System.out.print(" Please enter quantity ");
      quantity = Input.nextInt();
      System.out.print(" enter price ");
      price = Input.nextFloat();
      System.out.print(" enter commission rate ");
      commissionRate = Input.nextDouble();
      System.out.print(" enter discount percent ");
      discountPerCent = Input.nextDouble();

      saleAmt(quantity, price);
      netSale(10, 20, 20);
   }
   public static double saleAmt(double qntity, double pr)
   {
      double saleAmount;
      saleAmount = qntity * pr;
      return saleAmount;
   }
   public static double netSale(double saleAmount, double commissionAmount, double discountAmount)
   {

      double AddsalAmount = saleAmount + commissionAmount;
      double subComAmount = saleAmount - discountAmount;
      return AddsalAmount;
   }


}```