private 1.private data members  and methods are only accessible within the class private变量，方法只能在同一个类中被访问 2.Class and interface cannot be declared as private  class和interface不能被private修饰 3.If a cl

1.default 2.private 3.protected 4.public      1.default ---------------------------------------------------------------------------------------------------------- 只能是同一个package的类，可以访问类中的方法，下面的