public FileMock(int size, int length) {
		content = new String[size];
		for (int i = 0; i < size; i++) {
			StringBuilder buffer = new StringBuilder(length);
			for (int j = 0; j < length; j++) {
				int indice = (int) Math.random() * 255;
				buffer.append((char) indice);
			}
			content[i] = buffer.toString();
		}
		index = 0;
	}