21+ Java Method Private Public Protected UK. You must have seen public, private and protected keywords while practising java programs, these are called access modifiers. If, you still try to declare an abstract method final a compile time error is generated saying illegal in the following java program, we are trying to declare an abstract method protected.
Java has four access modifier namely private, protected and public.
Private and (c++) protected are vertical. This is more restrictive than the public modifier. If a class member is declared with the public access modifier, then this class member is accessible from any code in the given package and outside the package (for all methods of all classes) These access modifiers are used to restrict accessibility of a class, method or variable on which it applies.