Need help with number 4.

. What is another word used for describing the access level of a method? 4. Write a method declaration for each of the following descriptions: a) A class method named getVowels that can be called by any other method, requires a String parameter, and returns an integer valuc. b) A class method named extractDigit that can be called by any other method, requires an integer parameter, and returns an integer value. c) A class method named insertString that can be called by any other method, requires a String parameter and an integer parameter, and returns a String parameter. 7. a) How does the compiler distinguish one method from another? b) Can two methods in the same class have the same name? Explain