private void ouverture() {
		try{
			InputStream in = new FileInputStream(filepath); 
			InputStreamReader inr = new InputStreamReader(in);
			BufferedReader br = new BufferedReader(inr);
			String ligne;
			while ((ligne=br.readLine())!=null){
				fichier +=ligne+" ";
			}
			br.close(); 
		}		
		catch (Exception e){
			System.out.println("FileReading Error");
		}
	}