Classes, methods and objects.

Question

I cannot understand classes and methods and its' modifiers. Need your help.
There are lots of examples of a class using, but only as "human", "books", "cats" and etc. But I can't understand how to use it to arrays' object.

Answer 1

https://www.tutorialspoint.com/java/java_object_classes.htm
Java Object and Classes - TutorialsPoint

https://www.tutorialspoint.com/java/java_methods.htm
Java Methods - TutorialsPoint

https://www.tutorialspoint.com/java/java_modifier_types.htm
Java Modifier Types - TutorialsPoint