Grade Calculator Programming 1

public class GradeCalculator{
    public static double calculateAssignment(double asst1, double asst2, double asst3){
        double avgasst = (asst1 + asst2 + asst3)/3;
        //calculating the average of the assignment grades by adding them all up and dividing by the number of grades
        return avgasst;
        //I'm going to need my assignment average later so I'm returning the new value
    }
    public static double calculateQuiz(double quiz1, double quiz2, double quiz3){
        double minquiz = Math.min(quiz1, Math.min(quiz2, quiz3));
        //to find the smallest of 3 numbers, I set up mathmin so that it first finds which is the lowest grade between quiz 2 and 3, and then compares this lowest value with quiz 1
        double avgquiz = (quiz1 + quiz2 + quiz3 - minquiz)/2;
        //because I don't know beforehand which quiz will have the lowest grade, I'm subtracting the minquiz double to nullify the value of the lowest grade, before dividing the sum by 2 to get the average
        return avgquiz;
    }
    public static double calculateTotal(double avgasst, double avgquiz, double midterm, double finals){
        //to find the weighed average I'm going to multiply the average of each grade type by the percentage of the final grade it will account for
        double weighedasst = avgasst * 30/100;
        //because assignments are worth 30%, I multiply the grade by 30 and divide by 100
        double weighedmidterm = midterm * 25/100;
        //same thing but for 25% of final grade
        double weighedfinal = finals * 40/100;
        double weighedquiz = avgquiz * 5/100;
        double weighedaverage = weighedasst + weighedmidterm + weighedfinal + weighedquiz;
        //because I've found how many points each average is worth already, I just have to add them to find the total weighted average
        return weighedaverage;
    }
    public static void calculateGrade(){
        java.util.Scanner reader = new java.util.Scanner(System.in);
        System.out.println("Input grade of assignment 1:");
        double asst1 = reader.nextDouble();
        System.out.println("Input grade of assignment 2:");
        double asst2 = reader.nextDouble();
        System.out.println("Input grade of assignment 3:");
        double asst3 = reader.nextDouble();
        // here I am prompting the user to give me the input for the assignment grades and then scanning the input to put into double variables
        double avgasst = calculateAssignment(asst1, asst2, asst3);
        //calling on the calculateAssignment method where I will calculate the average of the three assignments
        System.out.println("Input grade of quiz 1:");
        double quiz1 = reader.nextDouble();
        System.out.println("Input grade of quiz 2:");
        double quiz2 = reader.nextDouble();
        System.out.println("Input grade of quiz 3:");
        double quiz3 = reader.nextDouble();
        //received input for quiz grades
        double avgquiz = calculateQuiz(quiz1, quiz2, quiz3);
        //going to calculateQuiz method to find the quiz average
        System.out.println("Input grade on the midterm:");
        double midterm = reader.nextDouble();
        System.out.println("Input grade on the final:");
        double finals = reader.nextDouble();
        double weightedaverage = calculateTotal(avgasst, avgquiz, midterm, finals);
        //calling on the calculateTotal method to find weighted average
        System.out.println("Your assignment average is: " +avgasst);
        System.out.println("Your quiz average (after dropping the lowest grade) is: " +avgquiz);
        System.out.println("Your weighted average is: " +weightedaverage);
        double finalgrade = Math.max(weightedaverage, finals);
        //comparing weighed average to the grade on the final to find the highest
        System.out.println("Your final grade is: " +finalgrade);
        //printing the highest of the two
    }
    public static void main(String[]args){
        calculateGrade();
        //calling my grade calculating method from main
    }
}