Is it possible for users to call a method through user input?

Question

I am creating a note program for practice on classes, methods, objects, extending, and implementing. I have just started the program and looking to improve it. One of the main features of this program, is to allow users to enter a command and have the computer run the command. However the user will not be using integers to call the method. I want them to use strings. This is a problem because I am unsure of how to use the if or else statements in the case of, If the user enters "Command 1" then output "Your name is " + userFirstName. I may not be very clear here but you might be able to see what I am trying to do by looking at my code:
https://code.sololearn.com/comYWVwhLKGV

Answer 1

if(scanner.nextLine() == "Command 1")
// call your method

else
// print some error msg

If you want to check for more commands, then better use switch.