Problem when calculating average

Question

I’m trying to make a program, which gives the grade of two tests, P1 and P2. You sum and divide by 2 to get the average. If it is larger than 6, the program returns the following sentence: Approved. If the average is less than 4, the program returns the following sentence: Flunked. Now, if the grade is between 4 and 6, the program asks for the proof of recovery (VS) grade, and if it is greater than 6, returns: Approved, or if the note is less than 6 it returns: Flunked.

I wanted to ask for help, where I got the problem wrong.

Note: I cannot use Scanner. I have to keep it like this, only I cannot run the program.

class Media {
    public static double Media( float P1, float P2) {
        double Media = (P1 + P2) / 2;
    } 

    public static double VS( float nota) {
        double VS = nota;
    }

    public static void main(String [] args) { 
        if (Media >= 6) { 
            System.out.println("Aprovado.");
        } 
        else if (Media < 4) {
            System.out.println("Reprovado."); 
        } 
        else { 
            if( nota >= 6) {
                System.out.println("Aprovado."); 
            } 
            else { 
                System.out.println("Reprovado."); 
            } 
        } 
    } 
}

Answer 1

Your code presents some problems:

• Media is already the name of the class, therefore it should not be used to designate the name of a method because in this way it is confused with a possible constructor of the same;
• Define if you will use float or double to work properly with the method that returns the average of notes;
• His method VS is initiating a local variable that has no functionality;
• Your methods are not returning any value;
• When calling the method that calculates the average within main, you are forgetting to pass the arguments regarding the grades of proofs P1 and P2;
• You need to get the notes of all proofs (P1, P2 and Recovery) in any way, whether by requesting input of data by the user or not.

A possible solution would be:

class Media {

    public static float media(float P1, float P2) {
        return (P1 + P2) / 2;
    } 

    public static void main(String [] args) { 

        float notaP1 = 10, notaP2 = 5, notaRecuperacao = 6;

        if ( media(notaP1, notaP2) >= 6) { 
            System.out.println("Aprovado.");
        } 
        else if (media(notaP1, notaP2) < 4) {
            System.out.println("Reprovado."); 
        } 
        else { 
            if( notaRecuperacao >= 6) {
                System.out.println("Aprovado."); 
            } 
            else { 
                System.out.println("Reprovado."); 
            } 
        } 
    } 
}