What is the default access modifier in Java?
This question already has an answer here:
From Java documentation
If a class has no modifier (the default, also known as package-private), it is visible only within its own package (packages are named groups of related classes — you will learn about them in a later lesson.)
At the member level
, you can also use the public modifier or no modifier
(package-private) just as with top-level classes, and with the same meaning.
Full story you can read here (Which I wrote recently):
http://codeinventions.blogspot.com/2014/09/default-access-modifier-in-java-or-no.html
从文档:
Access Levels
Modifier Class Package Subclass World
-----------------------------------------------------
public Y Y Y Y
protected Y Y Y N
(Default) Y Y N N
private Y N N N
It depends on the context.
When it's within a class:
class example1 {
int a = 10; // This is package-private (visible within package)
void method1() // This is package-private as well.
{
-----
}
}
When it's within a interface:
interface example2 {
int b = 10; // This is public and static.
void method2(); // This is public and abstract
}
链接地址: http://www.djcxy.com/p/24046.html
上一篇: 包冲突情况下的私人访问修改器行为
下一篇: Java中的默认访问修饰符是什么?