How to create Applet or Frame(window) ?

Question

https://code.sololearn.com/cAGc0bHtUw8c/?ref=app
Help me out plz
This code I have to submit in my college, but I'm not able to make applet of it.
Someone help me plz

Answer 1

if you're in hurry why not use netbeans or eclipse, both have easy drag n drop Frame builder

Answer 2

I don't know about Frame methods

Answer 3

you can rewrite this Swing app
http://www.fredosaurus.com/notes-java/examples/components/20body_mass_index/bmi.html