public FileInputStream nextElement() {
		if(next != null){
			try {
				next.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		try {
			FileInputStream in = new FileInputStream(streamList[index]);
			index++;
			return in;
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		}
		//Impossible
		System.out.println("Unexpected");
		return null;
	}