@Test
 public void testCreateTable() {
   LoaderData loaderData = new LoaderData("File/Classeur1.xls");
   System.out.println(loaderData.createTable("Feuil1"));
 }
 @Test
 public void testInsertIntoTable() {
   LoaderData loaderData = new LoaderData("File/Classeur1.xls");
   System.out.println(loaderData.insertIntoTable("Feuil1"));
 }