Java Programming

i'm currently designing a text based game using blueJ. as a part of my game, the user can type "map" as a command to display an image of the map of the game world. however, i'm curious as to how i'm meant to start implementing this command.

would i need a separate class for displaying an image?

where do i store the actual image file?

how do i call the image method from another class?

is there any other information i need to complete my task?

thanks