Explanation needed for how to display text in a randomly selected checkbox

Ok, in my java class within my android app where i have a checkbox array with 4 checkboxes and i want to randomly select a checkbox from that array and according to which checkbox is chosen, i want to display some text in there. Btw i have a random number generated that i want to display in the randomly selected checkbox, so how can i do that? I currently have not attempted to code this because i haven't acquired that knowledge yet but i have searched stackoverflow questions related to checkboxes but i couldn't find the answer to my question.