Public,private,protected in Java, and the default difference

Public,private,protected in Java, and the default difference

1, private modifier, that the members are private, only their own can access;   
2, protected, represents the protected permission, embodied in inheritance, that is, subclasses can access the parent class protected members, while other classes within the same package can also access the protected members.   
3, no modifier words (default), indicating the package access rights (friendly, the Java language is not friendly this modifier, so that the name should be derived from C + +), the same package can be accessed, access is the package level access rights;  
4, public modifier, that the member is open, all other classes can be accessed;

Public,private,protected in Java, and the default difference