[Java]private, the difference between public,protected,friendly (reprint) Remember all of a sudden

http://teddyboy200382.blog.163.com/blog/static/320112002008825112549780/

Description of these four keywords before I want to justClassTo make a simple definition of the relationship, for the inheritance of their ownClass,Base classcan be thought of as their own children, and for a directory of their ownClasses, thinking they are all their friends.

1,Public:public indicates that the data member, member function is open to all users, and all users can call
 < Span lang= "en-US" >2, private : private means private, private means except class No one else can use it directly, and private property is inviolable, even for children and friends.
 3, protected: protected , free to use without any restrictions, and for other external classprotected private

4,friendly: do not write when the default is friendly,friendly is friendly, for friends, Can be used freely, without any restrictions, and for other external classes, even children, can not be used .

Scope Current class same package descendant class other package

Public√√√√

Protected√√√x 

friendly       √            √             x            x 

private         √             x             x             x

[Java]private, public,protected,friendly difference (reprint) Remember all at once