public static void editSession()
{
	ArrayList<String> sl = new ArrayList<String>(); // sentence from file
	System.out.println("Enter Session name edit:");
	Scanner sc = new Scanner(System.in);
	String sm = sc.nextLine().toLowerCase();
	int position =0;
	boolean found = false;
	int universal = 0, indicator=0;
	
	Scanner fsc = getFileScanner("/src/session.txt");
	while(fsc.hasNextLine())
	{
		String line = fsc.nextLine();
		sl.add(line);
		universal++;
		if(line.substring(0, sm.length()).equals(sm))
		{
			position = 1;
			found = true;
			indicator = universal;
		}
	}

	if(found && position==1)
	{
		System.out.println(" ");
		System.out.println("Please select an option below:\n1. Add Student\n2. Remove Student\n3. Edit Session name\n0. Exit");
		Scanner sc2 = new Scanner(System.in);
		int option2 = sc2.nextInt();

		switch(option2)
		{
		case 1:
			sl = addStudent(sl,indicator);
			showStudent(sl,indicator);
			writeStudentToFile(sl,"/src/session.txt");
			sl.clear();
			break;
		case 2:
			sl = removeStudent(sl);
			showStudent(sl,indicator);
			writeStudentToFile(sl,"/src/session.txt");
			sl.clear();
			break;
		case 3:
			sl = changeSessionName(sl, sm);
			showStudent(sl,indicator);
			writeStudentToFile(sl,"/src/session.txt");
			sl.clear();
			break;
		case 0:
			break;
		}
	}
	else
	{
		System.out.println("Invalid Module name / code");
	}
}