public static String read_String(String filename) {
		String out = " ";
		try {
			FileReader file = new FileReader(filename);
			BufferedReader in = new BufferedReader(file);
			String Zeile;
			while ((Zeile = in.readLine()) != null) {
				out = out + Zeile;
			}
			// in.close();

		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}

		// System.out.prin	tln("Zahl = " + Zahl);
		// System.exit(0);
		return out;
	}