I need a short answer to this discussion questions.It can be answered in 4 to 5 sentences

I need a short answer to this discussion questions.It can be answered in 4 to 5 sentences. Class is IT-145 

(What is one of the best GUIs you’ve used? What makes it so great (look, ease of use, complex calculations)? What are the action events and action listeners of the program? 

Blackboard is a GUI. What are your thoughts about it? As you are typing the answer to this question, what is the action event and action listener?

 
"Looking for a Similar Assignment? Order now and Get 10% Discount! Use Code "Newclient"