16+ Public Private Protected Java US. You can not use the private modifier on top. Java has four access modifier namely private, protected and public.
Fields, methods and constructors declared public (least restrictive) within a public class are visible to any class in the java program, whether these classes are in the same package or in another package.
In java we have four access modifiers: Do you see these words somewhat confusing? Only having private constructors also means that the class cannot be subclassed externally, since java requires a therefore fields, methods, blocks declared inside a public class can be accessed from any class belonging to the java universe. Public , protected , private when a method or an attribute of the class has protected modifier, only subclasses or classes in the same package can access that method or.