public class Test implements Comparator {

	private static Comparator _comparator;
	public Test(Comparator comparator){
		_comparator = comparator;
	}

	public static Student[] sortByName(Student[] tablica){
		for (int i = 0;i<tablica.length;i++){
			for(int j = 0; j<tablica.length-i;j++){
				if(_comparator.compare(tablica[i], tablica[i+1])>0){
					Student tmp = tablica[i];
					tablica[i] = tablica[i+1];
					tablica[i+1] = tmp;
				}
			}
		}
		return tablica;
	}



	public static void main(String[] args) {
		// TODO Auto-generated method stub

		Student student0 = new Student(0, "Kowalski", "Jan", 5.5);
        Student student1 = new Student(1, "Kowal", "Basia", 4.5);
        Student student2 = new Student(2, "Źródło", "Maciej", 3.5);
        Student student3 = new Student(3, "Wysoka", "Marta", 4.0);
        Student student4 = new Student(4, "Konarek", "Dorota", 5.0);
        Student student5 = new Student(5, "Nowy", "Bartłomiej", 2.0);

        int size = 6;
		Student[] tablica = new Student[size];
        tablica[0] = student0;
        tablica[1] = student1;
        tablica[2] = student2;
        tablica[3] = student3;
        tablica[4] = student4;
        tablica[5] = student5;

        System.out.println("Tablica w kolejności wpisania");
        for(int i = 0;i<tablica.length;i++){
        	System.out.println(tablica[i]);
        }

        System.out.println(sortByName(tablica));

	}
}