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私有静态成员-内存使用

[英]Private Static Members - Memory Use

原文 2015-04-15 13:14:00 1 1 java/ memory/ static/ private

I Understand the concept of private static variables. 我了解私有静态变量的概念。 However, I am concern with the memory use of my application. 但是，我对应用程序的内存使用感到担心。

Question 1: If I create private static members does it imply that they will last for the whole program execution and therefore wasting memory resources? 问题1：如果我创建私有静态成员，是否意味着它们将在整个程序执行过程中持续存在，从而浪费内存资源？

Question 2: Do private static members differ from public static members in terms of memory usage? 问题2：就内存使用而言，私有静态成员与公共静态成员是否有所不同？

Question 3? 问题3？ What kind of memory they reside on? 它们驻留在哪种内存上？ RAM memory? RAM内存？

1 个解决方案

Here's what you should be looking for: 这是您应该寻找的：

Yes from the point when jvm will load your class till your JVM is up and running. 是的，从jvm加载类直到JVM启动并运行为止。 You will have just one instance of you static member within whole JVM. 在整个JVM中，您只有一个静态成员实例。
No. Here you are just differing the access specifier ie way one class could see the the static member of your class from another class. 否。在这里，您只是在不同的访问说明符，即，一个类可以从另一个类看到该类的静态成员的方式。
Yes they are on RAM. 是的，它们在RAM上。

为什么要使用public和private来静态成员和方法？ - Why use public and private to static members and method?

PowerMock 访问私有静态成员 - PowerMock access private static members

JAVA中静态成员的内存范围 - Memory Scope of Static Members in JAVA

静态成员是否有助于内存效率？ - Do static members help memory efficiency?

使用 getter 还是直接访问私有成员更好？ - Is it better to use getters or to access private members directly?

何时将静态嵌套类（以及其中的静态成员）加载到内存中？ - When is a static nested class (and static members therein) loaded into memory?

静态嵌套类是否可以完全访问私有外部类成员？ - Static nested class has full access to private outer class members?

从 AspectJ 访问私有静态成员（例如记录器） - Accessing private static members (e.g. loggers) from AspectJ

实例是否应该使用setter / getter访问其自己的私有数据成员？ - Should instances use setters/getters for accessing their own private data members?

通过在Java中使用反射来访问和修改私有类成员 - Accessing and modifying private class members through the use of reflection in Java

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相关问题 为什么要使用public和private来静态成员和方法？ - Why use public and private to static members and method? PowerMock 访问私有静态成员 - PowerMock access private static members JAVA中静态成员的内存范围 - Memory Scope of Static Members in JAVA 静态成员是否有助于内存效率？ - Do static members help memory efficiency? 使用 getter 还是直接访问私有成员更好？ - Is it better to use getters or to access private members directly? 何时将静态嵌套类（以及其中的静态成员）加载到内存中？ - When is a static nested class (and static members therein) loaded into memory? 静态嵌套类是否可以完全访问私有外部类成员？ - Static nested class has full access to private outer class members? 从 AspectJ 访问私有静态成员（例如记录器） - Accessing private static members (e.g. loggers) from AspectJ 实例是否应该使用setter / getter访问其自己的私有数据成员？ - Should instances use setters/getters for accessing their own private data members? 通过在Java中使用反射来访问和修改私有类成员 - Accessing and modifying private class members through the use of reflection in Java

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