Java access modifier

The security of the Java language is embodied in its strict access restrictions. In Java, if the access modifier has public modifier, all objects can access the private private modifier, can only access within the class, external access to protected protected access restrictions, Only classes and subclasses in the same package have access to the default is that only classes in the same package can access the access modifier can be decorated, classes, methods, variables in Java programming generally like to use private to modify the class's member variables, and then by writing get and set method to get, Modify Private Member variables

Java access modifier