debug java exercise program

The attached java file and its client program throw up many errors when I try to compile

Please help me to debug

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Solution Preview (FAST and isOn). I replaced those with numbers; you can add a constant later if you would like. Also, you could try something like ceiling.SetFastSpeed() to just set it to some arbitrary fast speed you have determined.
<br>Like I said, I'm not fully sure that you had a class originally, so here is the idea behind it. Each object that you deal with in an Object Oriented language like Java needs its own Java file to ...