You might have to click on the CoCo screen to enable typing. Yeah, it's buggy and could probably be a lot better. I'm using this project to teach myself Java and have fun.
There is floppy in the CoCo's disk drive that contains three files:
To load FACT.LSP, display the function, find the factorial of 5, and exit, enter the following from the LISP> prompt:
The Java console shows every character that has gone through the CoCo's "character out" routine, so if you want a copy of something you did in the emulator, you should be able to type commands in the CoCo to list your program or whatever, open the Java console, and then cut-and-paste from there.