Erreur : impossible de trouver ou charger la classe principale

package projet2;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Scanner;

public class Test {
	private int[][] tabTest;
	private int[] total;
	private int[] qtpts;
	private int[][] tabRep;
	private ListeQuestion lstQuestions;
	private ListeEtudiants lstEtudiants;
	private int numQuestions;
	private int numetudiants;
	private ArrayList<Etudiant> tabEtudiantChoisi = new ArrayList<Etudiant>();
	private ArrayList<Questions> tabQuestionsChoisi = new ArrayList<Questions>();

	/**
	 * @param args
	 */
	Test(ListeQuestion lstQuestions, ListeEtudiants lstEtudiants) {
		this.lstQuestions = lstQuestions;
		this.lstEtudiants = lstEtudiants;
		genererEtudiants();
		genererQuestions();
		demarrerTest();
	}

	private void genererEtudiants() {
		Scanner scanEtudiant = new Scanner(System.in);
		Collections.shuffle(lstEtudiants.getArEtudiant());
		System.out.println("Entrez  le nombre d'étudiants que vous voulez tester :");
		numetudiants = Integer.parseInt(scanEtudiant.nextLine());
		try {
			for (int i = 0; i < numetudiants; i++) {
				tabEtudiantChoisi.add(lstEtudiants.getArEtudiant().get(i));
			}
		} catch (NumberFormatException e) {
			System.out.println("Vous n'avez pas écrit un nombre");
		}
	}

	private void genererQuestions() {
		Scanner scanQuestions = new Scanner(System.in);
		Collections.shuffle(lstQuestions.getLstQuestion());
		System.out.println("Entrez  le nombre de Questions que vous voulez tester :");
		numQuestions = Integer.parseInt(scanQuestions.nextLine());
		try {
			for (int i = 0; i < numQuestions; i++) {
				tabQuestionsChoisi.add(lstQuestions.getLstQuestion().get(i));
			}
		} catch (NumberFormatException e) {
			System.out.println("Vous n'avez pas écrit un nombre");
		}
	}

	public ArrayList<Etudiant> getTabEtudiantChoisi() {
		return tabEtudiantChoisi;
	}

	public void setTabEtudiantChoisi(ArrayList<Etudiant> tabEtudiantChoisi) {
		this.tabEtudiantChoisi = tabEtudiantChoisi;
	}

	public ArrayList<Questions> getTabQuestionsChoisi() {
		return tabQuestionsChoisi;
	}

	public void setTabQuestionsChoisi(ArrayList<Questions> tabQuestionsChoisi) {
		this.tabQuestionsChoisi = tabQuestionsChoisi;
	}

	private void demarrerTest() {
		String strReponse = "";
		tabTest = new int[numetudiants][numQuestions + 1];
		tabRep = new int[numetudiants][numQuestions];
		total = new int[numetudiants];
		qtpts = new int[numQuestions];
		for (int indexEtudiant = 0; indexEtudiant < tabEtudiantChoisi.size(); indexEtudiant++) {
			System.out.println(tabEtudiantChoisi.get(indexEtudiant).toString());
			for (int indexQuestion = 0; indexQuestion < tabQuestionsChoisi.size(); indexQuestion++) {
				System.out.println(tabQuestionsChoisi.get(indexQuestion).toString());
				Scanner scanRep = new Scanner(System.in);
				int bonneR = tabQuestionsChoisi.get(indexQuestion).getBonneReponse();
				strReponse = scanRep.nextLine();
				if (strReponse.charAt(0) - 'a' + 1 == bonneR) {
					System.out.println("Bravo!");
					tabTest[indexEtudiant][indexQuestion] = tabQuestionsChoisi.get(indexQuestion).getPonderation();
					tabTest[indexEtudiant][numQuestions] += tabQuestionsChoisi.get(indexQuestion).getPonderation();
					total[indexEtudiant] = tabTest[indexEtudiant][numQuestions];
					tabRep[indexEtudiant][indexQuestion] = 1;
					qtpts[indexQuestion] += 1;
				}
			}
		}
		for (int[] tab : tabTest) {
			for (int i : tab) {
				System.out.print(i + " ");
			}
			System.out.println();
		}
	}

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		ListeQuestion objlstQuestion = new ListeQuestion("questions.txt","reponses.txt");
		// objlstQuestion.afficherQuestions();
		ListeEtudiants objlstEtudiant = new ListeEtudiants("etudiants.txt");
		// objlstEtudiant.afficherEtudiant();
		Test objTest = new Test(objlstQuestion, objlstEtudiant);
		Scanner scan = new Scanner(System.in);
		System.out.println("Voulez-vous les statistiques?");
		String reponse = scan.nextLine();
		if (reponse.equals("oui")) {
			System.out.println("Test");
			Statistique objStats = new Statistique();
			objStats.demarrerStats(objlstEtudiant, objlstQuestion, objTest);
			System.out.println("Test");
		}
	}

	public int[][] getTabTest() {
		return tabTest;
	}

	public int getNumQuestions() {
		return numQuestions;
	}

	public void setNumQuestions(int numQuestions) {
		this.numQuestions = numQuestions;
	}

	public int getNumetudiants() {
		return numetudiants;
	}

	public void setNumetudiants(int numetudiants) {
		this.numetudiants = numetudiants;
	}

	public int[] getTotal() {
		return total;
	}

	public void setTotal(int[] total) {
		this.total = total;
	}

	public int[] getQtpts() {
		return qtpts;
	}

	public void setQtpts(int[] qtpts) {
		this.qtpts = qtpts;
	}
}