import java.util.Scanner;
 
class Ex1 {
    private String name;
    private String[] subjects = new String[3];
    private float[][] notes = new float[3][4];
    float result;
    Scanner sc = new Scanner(System.in);
 
    private void PobierzImieOdUsera() {
        System.out.print("Podaj imię ucznia: ");
        name = sc.next();
    }
 
    private void PobierzPrzedmiotyIocene() {
        for (int i = 0; i < subjects.length; i++) {
            System.out.print("Podaj nazwy przedmiotów, których uczy się " + name + ": \n");
            subjects[i] = sc.next();
            for (int j = 0; j < subjects[i].length(); j++) {
               System.out.print("Podaj ocenę dla przedmiotu " + subjects[i] + ": \n");
               notes[i][j] = sc.nextFloat();
            }
        }
    }
 
    private void SrednieOcen() {
 
    }
 
 
    public static void main(String[] args) {
        Ex1 n = new Ex1();
        n.PobierzImieOdUsera();
        n.PobierzPrzedmiotyIocene();
        n.SrednieOcen();
    }
}

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Kasia
Ang
4
4
5
Nie
5
4
5
Fra
4
3
2