Parsing Error Message not Friendly for Users

[tizreal]

Area Path: Input-Text Tab > Convert

Severity: Low
Priority: Medium
Assigned to: ahopk127/eecs2311-tab2xml

Reported By: Odunfa Temiloluwa
Reported On: 2021-03-24
Reason: A non friendly error message pops up when there's no text in text area and the convert button is clicked

Commit #: 8afe0be
Environment: Windows 10, Eclipse IDE 2020 -12

Description:
Application shows a non user friendly error message when the convert button is pressed and there's no text in text Area.
Steps To Reproduce:

1. On the Input - Text Tab, click on either “Load from File” or “Enter a text tab into text area”
2. Click on the Convert button without any file loaded in the text area

Expected Result: On clicking the Convert button without any file loaded into the text area a simple user friendly error message should pop up, for example, "You haven't chosen a file yet".