so i have this java shell that i'm running via terminal, and it's giving me an option to "choose" from option [1], [2], and [3]. It leaves me at the ":" prompt and i'm trying to select any of the options 1-3. entering "1" (without the quotes) or "[1]" doesn't do anything. copying and pasting the entire line, for example "[1] Option 1" doesn't do anything either. i'm clueless here...