When one method calls another method, i want to know which of these are true in java programming / coding.
1. class & instance methods of one class may call the public class methods of another class using dot notation and referencing the name of the other class.
2. class & instance methods of one class may call the public instance methods of another class by using dot notation to invoke a method on an instance method of the other class.
3. instance methods of a class may call only using dot notation, any class method of the same class.
i've felt conflicted on this in ap java and i can only guess statements #1. and #3 are true. as my sample projects tend to follow this trend (but i can't say for sure unless i know the full extent and limits of what could happen). i would like on this and i would appreciate it.