Java中的默认访问修饰符是什么？ [英] What is the default access modifier in Java?

问题描述

如果我没有明确说明方法或实例变量的默认访问修饰符是什么？

What is the default access modifier for a method or an instance variable if I do not state it explicitly?

例如：

package flight.booking;

public class FlightLog
{
    private SpecificFlight flight;

    FlightLog(SpecificFlight flight)
    {
        this.flight = flight;
    }
}

此构造函数的访问修饰符是受保护的还是包的？可以在同一个包中的其他类（ flight.booking ）调用此构造函数吗？

Is the access modifier of this constructor protected or package? Can other classes in the same package, which is flight.booking, call this constructor?

推荐答案

来自Java 文档

如果一个类没有修饰符（默认的，也称为包私有），它只在它自己的包中可见（包被命名为相关课程 - 您将在后面的课程中了解它们。）

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.)

成员级别，您也可以使用public修饰符或 no modifier （package-private），就像使用顶级类一样，并且具有相同的含义。

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.

你可以在这里阅读全文（_{我最近写的}）：

Full story you can read here (_{Which I wrote recently}):

http://codeinventions.blogspot.com / 2014/09 /default-access-modifier-in-java-or-no.html

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