I have a question regarding the default constructor and the one that accepts comma separated arguments. Do we name the method name, the same as the class name for the method that accepts the comma separated arguments?

For it to be a constructor if has to have the same name as the class. So both constructors should be the same. Take a look at the notes/class code on the  books class -- good example on how it should look (it doesnt use this. tho)