Just a minor correction,
JCreator is an IDE, a working environment filled with tools to ease the work of creating projects in Java,
The term source codes usually (in Java language) refers to the .java file in which the codes was written, did the video include the complete source code in plain text .java file as well?
Just like Mr. JavaBean said, ur code isn't an applet, so it is missing a main method, applications must have at least 1 main method to be able to execute
I wonder, maybe there's another class linked to this one?
Maybe that's where the main method are, try to check the other videos available
Just like Mr. J there, i also recommend a text based tutorial to start, and also, try to find more references bout classes, constructors and methods, learning by doing is useful, but an xtra menu of concepts won't hurt either right
