Creating a java program to calculate what grades i need?

Hi guys im obviously new here, im on a lot of forums for various things and im in my first semester of Java programming so time to join in a java forum! I was wanting to make a little personal program for myself and i hope this is close to the right place to put it! \ Im always trying to find what grades do i need in this class to get an A or whats my minimum for a B etc, so heres kind of what im looking to make the program do,

First i want to input how many grades i have for the class total

then id like to ask for the maximum possible points for each assignment

Then ask how many of the assignments have been done and graded so far

then ask for the amount of points i got on each of the graded ones

then id like it to do one of two things, either list out what minimum grades i need for each letter grade A, B, C D F OR ask what letter grade i want to see my minimums for! Id like to print an error if lets say i cant make an A and i want to see the grades for an A then i want it to say already to low and repeat asking me what grade id like to get

id also like it to do this in joptionpane and be able to run it as an japplet!

Basically im curious if maybe someone has seen one like this out there or has done programs similar to this that wouldnt mind sharing with me! or a base program that i could work on from there or something, or of course i know some people who can throw code down like no other haha i however understand the basics of how they work and like running htem and using them and im better at working on them after ive seen something similar done i guess!

ive posted code below for my starting out!

Thanks!!

It would be easy to write something like this, but instead of asking others for a base program, why not just try to create it on your own first? You'll get far more out of the exercise this way, and then if you get stuck and come back with questions, you'll understand your own code much better than our code.

Note that for a "personal project" it smells an awful lot like an academic assignment. Nice try but no dice. ;)

lol okay so maybe you might have caught me...... in my defense he told us to make a personal program that we would use haha so i have started working on it, and for my first part that im a little stumped is here

Code :

---

import java.util.Scanner;
 
 
public class Prog5 {
 
	public static void main(String args[])
	{
		int numberOfGrades;
		int grades = 0;
		int totalPoints;
		int points;
 
 
 
 
 
		Scanner input = new Scanner( System.in );
 
		System.out.println("How many total grades will there be? ");
		numberOfGrades = input.nextInt();
 
		do            
		{
		 grades++;
 
		System.out.println("Points possible for assignment " + grades + ":");
		points = input.nextInt();
 
		}while (grades < numberOfGrades);
 
		totalPoints = points;
 
		System.out.println(totalPoints);
 
 
 
	}
}

---

how can i get it to add points to the former number of points ect ect ?