How can i made multiple classes in codes playground of solo learn

Question

i mean that as the name of program will be class_name.java so if i eant to construct multiple class other than having a main method so that i able to use object of one as the parameters of other class methods.....
i m still confused plz tell me how to creat one.

Answer 1

you will have to create multiple classes etc but only use one "file"
ie. put all classes into myprogram.java